{"id":8034,"date":"2025-10-17T16:57:01","date_gmt":"2025-10-17T08:57:01","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=8034"},"modified":"2025-10-22T16:44:55","modified_gmt":"2025-10-22T08:44:55","slug":"pcb-circuit-board-characteristic-inspection-items-and-solutions","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/","title":{"rendered":"\u0628\u0646\u0648\u062f \u0641\u062d\u0635 \u062e\u0635\u0627\u0626\u0635 \u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0648\u062d\u0644\u0648\u0644\u0647\u0627"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_75 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#Electrical_Characteristic_Inspection_Solutions\" >\u062d\u0644\u0648\u0644 \u0641\u062d\u0635 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#1_Has_the_influence_of_conductor_resistance_inductance_and_capacitance_been_analyzed\" >(1) \u0647\u0644 \u062a\u0645 \u062a\u062d\u0644\u064a\u0644 \u062a\u0623\u062b\u064a\u0631 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \u0648\u0627\u0644\u0645\u062d\u0627\u062b\u0629 \u0648\u0627\u0644\u0633\u0639\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#2_Do_the_spacing_and_shape_of_conductor_attachments_meet_insulation_requirements\" >(2) \u0647\u0644 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0628\u064a\u0646 \u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0648\u0634\u0643\u0644\u0647\u0627 \u064a\u062a\u0648\u0627\u0641\u0642\u0627\u0646 \u0645\u0639 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0639\u0632\u0644\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#3_Are_insulation_resistance_values_controlled_and_specified_at_critical_locations\" >(3) \u0647\u0644 \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0642\u064a\u0645 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \u0648\u062a\u062d\u062f\u064a\u062f\u0647\u0627 \u0641\u064a \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u062d\u0631\u062c\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#4_Is_polarity_fully_identified\" >(4) \u0647\u0644 \u062a\u0645 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0628\u0634\u0643\u0644 \u0643\u0627\u0645\u0644\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#5_Has_the_influence_of_conductor_spacing_on_leakage_resistance_and_voltage_been_evaluated_from_a_geometric_perspective\" >(5) \u0647\u0644 \u062a\u0645 \u062a\u0642\u064a\u064a\u0645 \u062a\u0623\u062b\u064a\u0631 \u062a\u0628\u0627\u0639\u062f \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0639\u0644\u0649 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0648\u0627\u0644\u062c\u0647\u062f \u0645\u0646 \u0645\u0646\u0638\u0648\u0631 \u0647\u0646\u062f\u0633\u064a\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#6_Have_the_media_of_changed_surface_coatings_been_certified\" >(6) \u0647\u0644 \u062a\u0645 \u0627\u0639\u062a\u0645\u0627\u062f \u0648\u0633\u0627\u0626\u0637 \u0627\u0644\u0637\u0644\u0627\u0621\u0627\u062a \u0627\u0644\u0633\u0637\u062d\u064a\u0629 \u0627\u0644\u0645\u0639\u062f\u0644\u0629\u061f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#Physical_Characteristic_Inspection_Solutions\" >\u062d\u0644\u0648\u0644 \u0641\u062d\u0635 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#1_Are_all_pads_and_their_positions_suitable_for_final_assembly\" >(1) \u0647\u0644 \u062c\u0645\u064a\u0639 \u0627\u0644\u0648\u0633\u0627\u062f\u0627\u062a \u0648\u0645\u0648\u0627\u0636\u0639\u0647\u0627 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#2_Does_the_assembled_printed_circuit_board_meet_shock_and_vibration_conditions\" >(2) \u0647\u0644 \u062a\u0644\u0628\u064a \u0644\u0648\u062d\u0629 \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0627\u0644\u0645\u062c\u0645\u0639\u0629 \u0634\u0631\u0648\u0637 \u0627\u0644\u0635\u062f\u0645\u0627\u062a \u0648\u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632\u0627\u062a\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#3_What_is_the_spacing_of_the_specified_standard_components\" >(3) \u0645\u0627 \u0647\u0648 \u0627\u0644\u062a\u0628\u0627\u0639\u062f \u0628\u064a\u0646 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0627\u0644\u0645\u062d\u062f\u062f\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#4_Are_loosely_mounted_components_or_heavier_parts_securely_fixed\" >(4) \u0647\u0644 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0645\u062b\u0628\u062a\u0629 \u0628\u0634\u0643\u0644 \u063a\u064a\u0631 \u0645\u062d\u0643\u0645 \u0623\u0648 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u062b\u0642\u064a\u0644\u0629 \u0645\u062b\u0628\u062a\u0629 \u0628\u0625\u062d\u0643\u0627\u0645\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#5_Is_heat_dissipation_for_heating_elements_correct_Are_they_isolated_from_the_PCB_and_other_heat-sensitive_components\" >(5) \u0647\u0644 \u062a\u0628\u062f\u064a\u062f \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0644\u0639\u0646\u0627\u0635\u0631 \u0627\u0644\u062a\u0633\u062e\u064a\u0646 \u0635\u062d\u064a\u062d\u061f \u0647\u0644 \u0647\u064a \u0645\u0639\u0632\u0648\u0644\u0629 \u0639\u0646 \u0644\u0648\u062d\u0629 \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0623\u062e\u0631\u0649 \u0627\u0644\u062d\u0633\u0627\u0633\u0629 \u0644\u0644\u062d\u0631\u0627\u0631\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#6_Are_voltage_dividers_and_other_multi-lead_components_correctly_positioned\" >(6) \u0647\u0644 \u062a\u0645 \u0648\u0636\u0639 \u0645\u0642\u0633\u0645\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u0627\u0644\u0623\u062e\u0631\u0649 \u0641\u064a \u0627\u0644\u0645\u0648\u0636\u0639 \u0627\u0644\u0635\u062d\u064a\u062d\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#7_Is_the_component_arrangement_and_orientation_conducive_to_inspection\" >(7) \u0647\u0644 \u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0648\u0627\u062a\u062c\u0627\u0647\u0647\u0627 \u064a\u0633\u0627\u0639\u062f\u0627\u0646 \u0639\u0644\u0649 \u0627\u0644\u0641\u062d\u0635\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#8_Have_all_potential_interferences_between_the_PCB_and_the_entire_board_assembly_been_eliminated\" >(8) \u0647\u0644 \u062a\u0645 \u0627\u0644\u0642\u0636\u0627\u0621 \u0639\u0644\u0649 \u062c\u0645\u064a\u0639 \u0627\u0644\u062a\u062f\u0627\u062e\u0644\u0627\u062a \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0628\u064a\u0646 PCB \u0648\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0644\u0648\u062d\u0629 \u0628\u0623\u0643\u0645\u0644\u0647\u0627\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#9_Are_the_dimensions_of_the_positioning_holes_correct\" >(9) \u0647\u0644 \u0623\u0628\u0639\u0627\u062f \u0641\u062a\u062d\u0627\u062a \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0635\u062d\u064a\u062d\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#10_Are_the_tolerances_complete_and_reasonable\" >(10) \u0647\u0644 \u0627\u0644\u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0645\u0643\u062a\u0645\u0644\u0629 \u0648\u0645\u0639\u0642\u0648\u0644\u0629\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#11_Have_the_physical_properties_of_all_coatings_been_controlled_and_qualified\" >(11) \u0647\u0644 \u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629 \u0644\u062c\u0645\u064a\u0639 \u0627\u0644\u0637\u0644\u0627\u0621\u0627\u062a \u0648\u062a\u0623\u0647\u064a\u0644\u0647\u0627\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#12_Is_the_hole-to-lead_diameter_ratio_within_an_acceptable_range\" >(12) \u0647\u0644 \u0646\u0633\u0628\u0629 \u0642\u0637\u0631 \u0627\u0644\u062b\u0642\u0628 \u0625\u0644\u0649 \u0642\u0637\u0631 \u0627\u0644\u0631\u0635\u0627\u0635 \u0636\u0645\u0646 \u0627\u0644\u0646\u0637\u0627\u0642 \u0627\u0644\u0645\u0642\u0628\u0648\u0644\u061f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/topfastpcba.com\/ar\/pcb-circuit-board-characteristic-inspection-items-and-solutions\/#13_Does_the_PCB_meet_Electromagnetic_Compatibility_EMC_requirements\" >(13) \u0647\u0644 \u062a\u0641\u064a \u0627\u0644\u0644\u0648\u062d\u0629 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0628\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a (EMC)\u061f<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Electrical_Characteristic_Inspection_Solutions\"><\/span>\u062d\u0644\u0648\u0644 \u0641\u062d\u0635 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Has_the_influence_of_conductor_resistance_inductance_and_capacitance_been_analyzed\"><\/span>(1) \u0647\u0644 \u062a\u0645 \u062a\u062d\u0644\u064a\u0644 \u062a\u0623\u062b\u064a\u0631 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \u0648\u0627\u0644\u0645\u062d\u0627\u062b\u0629 \u0648\u0627\u0644\u0633\u0639\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> \u0627\u0639\u062a\u0645\u062f \u0637\u0631\u064a\u0642\u0629 \u0645\u0631\u0643\u0628\u0629 \u0645\u0646 \u062a\u062d\u0644\u064a\u0644 \u0627\u0644\u0645\u062d\u0627\u0643\u0627\u0629 \u0648\u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0641\u0639\u0644\u064a. \u0627\u0633\u062a\u062e\u062f\u0645 \u0623\u062f\u0648\u0627\u062a \u0645\u062d\u0627\u0643\u0627\u0629 SI\/PI (\u0645\u062b\u0644 HyperLynx \u0648 ADS) \u0644\u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0637\u0641\u064a\u0644\u064a\u0629 \u0642\u0628\u0644 \u0627\u0644\u062a\u062e\u0637\u064a\u0637\u060c \u0648\u062a\u062d\u0644\u064a\u0644 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0625\u0634\u0627\u0631\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062a\u0631\u062f\u062f \u0648\u0645\u0642\u0627\u0648\u0645\u0629 \u0634\u0628\u0643\u0629 \u062a\u0648\u0635\u064a\u0644 \u0627\u0644\u0637\u0627\u0642\u0629. \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u062f\u0648\u0627\u0626\u0631 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u062a\u0635\u0645\u064a\u0645 \u0645\u0637\u0627\u0628\u0642\u0629 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0648\u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627\u060c \u0645\u0639 \u0627\u0644\u062a\u062d\u0642\u0642 \u0645\u0646 \u0630\u0644\u0643 \u0628\u0642\u064a\u0627\u0633\u0627\u062a \u0642\u064a\u0627\u0633 \u0627\u0644\u0627\u0646\u0639\u0643\u0627\u0633 \u0641\u064a \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0632\u0645\u0646\u064a. \u0636\u0639 \u0642\u0648\u0627\u0639\u062f \u062a\u0635\u0645\u064a\u0645 PCB\u060c \u0648\u062d\u062f\u062f \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0645\u0637\u0627\u0628\u0642\u0629 \u0637\u0648\u0644 \u0648\u0639\u0631\u0636 \u0635\u0627\u0631\u0645\u0629 \u0644\u062e\u0637\u0648\u0637 \u0627\u0644\u0625\u0634\u0627\u0631\u0627\u062a \u0627\u0644\u062d\u0631\u062c\u0629 (\u0645\u062b\u0644 \u0627\u0644\u0633\u0627\u0639\u0627\u062a \u0648\u0627\u0644\u0623\u0632\u0648\u0627\u062c \u0627\u0644\u062a\u0641\u0627\u0636\u0644\u064a\u0629). \u0627\u0633\u062a\u062e\u062f\u0645 \u0637\u0631\u064a\u0642\u0629 \u0627\u0644\u0623\u0631\u0628\u0639\u0629 \u0623\u0633\u0644\u0627\u0643 \u0644\u0642\u064a\u0627\u0633 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0645\u0648\u0635\u0644 \u0628\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0645\u064a\u0644\u064a \u0623\u0648\u0645\u060c \u0648\u0645\u062d\u0644\u0644 \u0627\u0644\u0634\u0628\u0643\u0629 \u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u062d\u062b\u060c \u0648\u0645\u0642\u064a\u0627\u0633 LCR \u0644\u0644\u0633\u0639\u0629 \u0627\u0644\u0645\u0648\u0632\u0639\u0629. \u0642\u0627\u0631\u0646 \u0627\u0644\u0646\u062a\u0627\u0626\u062c \u0628\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0644\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0623\u0646 \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0637\u0641\u064a\u0644\u064a\u0629 \u0636\u0645\u0646 \u0627\u0644\u062d\u062f\u0648\u062f \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647\u0627\u060c \u0645\u0645\u0627 \u064a\u0645\u0646\u0639 \u062a\u0634\u0648\u064a\u0647 \u0627\u0644\u0625\u0634\u0627\u0631\u0629 \u0648\u0645\u0634\u0627\u0643\u0644 \u0627\u0644\u062a\u0648\u0642\u064a\u062a \u0648\u0627\u0644\u062a\u062f\u0627\u062e\u0644 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Do_the_spacing_and_shape_of_conductor_attachments_meet_insulation_requirements\"><\/span>(2) \u0647\u0644 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a \u0628\u064a\u0646 \u0645\u0644\u062d\u0642\u0627\u062a \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0648\u0634\u0643\u0644\u0647\u0627 \u064a\u062a\u0648\u0627\u0641\u0642\u0627\u0646 \u0645\u0639 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0639\u0632\u0644\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> \u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u062a\u062d\u0642\u0642 \u0627\u0644\u0645\u0632\u062f\u0648\u062c \u0645\u0646 DFM (\u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0645\u0646 \u0623\u062c\u0644 \u0642\u0627\u0628\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639) \u0648 DFA (\u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0645\u0646 \u0623\u062c\u0644 \u0627\u0644\u0645\u0648\u062b\u0648\u0642\u064a\u0629). \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u062d\u062f \u0627\u0644\u0623\u062f\u0646\u0649 \u0644\u0644\u0645\u0633\u0627\u0641\u0629 \u0648\u0641\u0642\u064b\u0627 \u0644\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u062c\u0647\u062f \u0627\u0633\u062a\u0646\u0627\u062f\u064b\u0627 \u0625\u0644\u0649 \u0645\u0639\u0627\u064a\u064a\u0631 IPC-2221 (\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0645\u0633\u0627\u0641\u0629 0.1 \u0645\u0645 \u0644\u0640 100 \u0641\u0648\u0644\u062a \u062a\u064a\u0627\u0631 \u0645\u0633\u062a\u0645\u0631). \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0628\u0631\u0646\u0627\u0645\u062c CAM \u0644\u0644\u062a\u062d\u0642\u0642 \u0627\u0644\u062a\u0644\u0642\u0627\u0626\u064a \u0645\u0646 \u0627\u0644\u0645\u0633\u0627\u0641\u0627\u062a\u060c \u0648\u062a\u0646\u0641\u064a\u0630 \u062a\u0635\u0645\u064a\u0645 \u0639\u0627\u0632\u0644 \u0645\u0639\u0632\u0632 \u0644\u0644\u0645\u0646\u0627\u0637\u0642 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0647\u062f (\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0648\u062d\u062f\u0627\u062a \u0627\u0644\u0637\u0627\u0642\u0629).\u0642\u0645 \u0628\u062a\u062d\u0633\u064a\u0646 \u0632\u0648\u0627\u064a\u0627 \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0632\u0648\u0627\u064a\u0627 45 \u062f\u0631\u062c\u0629 \u0623\u0648 \u0623\u0642\u0648\u0627\u0633 \u0644\u062a\u062c\u0646\u0628 \u062a\u0631\u0643\u064a\u0632 \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0645\u0646 \u0627\u0644\u0632\u0648\u0627\u064a\u0627 \u0627\u0644\u062d\u0627\u062f\u0629. \u0642\u0645 \u0628\u0625\u062c\u0631\u0627\u0621 \u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u062a\u062d\u0645\u0644 \u0627\u0644\u062c\u0647\u062f\u060c \u0628\u062a\u0637\u0628\u064a\u0642 2-3 \u0623\u0636\u0639\u0627\u0641 \u062c\u0647\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0644\u0645\u062f\u0629 \u062f\u0642\u064a\u0642\u0629 \u0648\u0627\u062d\u062f\u0629\u060c \u0644\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0639\u062f\u0645 \u062d\u062f\u0648\u062b \u0623\u064a \u0627\u0646\u0647\u064a\u0627\u0631. \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0645\u062d\u0627\u0643\u0627\u0629 \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a \u0644\u0644\u062f\u0648\u0627\u0626\u0631 \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062a\u0631\u062f\u062f\u060c \u0648\u062a\u062d\u0644\u064a\u0644 \u062a\u0623\u062b\u064a\u0631\u0627\u062a \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0647\u0627\u0645\u0634\u064a \u0644\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u062a\u0644\u0628\u064a\u0629 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0639\u0632\u0644 \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0641\u0639\u0644\u064a\u0629.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Are_insulation_resistance_values_controlled_and_specified_at_critical_locations\"><\/span>(3) \u0647\u0644 \u064a\u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0642\u064a\u0645 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0639\u0632\u0644 \u0648\u062a\u062d\u062f\u064a\u062f\u0647\u0627 \u0641\u064a \u0627\u0644\u0645\u0648\u0627\u0642\u0639 \u0627\u0644\u062d\u0631\u062c\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Establish a critical point insulation resistance control system. Identify key areas such as high-voltage zones, high-frequency circuits, and high-impedance applications, marking insulation resistance test points in the design. Select appropriate insulating materials (e.g., FR-4, polyimide) according to IEC-60112 standards, with surface treatment using solder mask. Use an insulation resistance tester (e.g., megohmmeter) to measure at 500V DC, ensuring insulation resistance \u2265100M\u03a9 at key locations (\u226510M\u03a9 under high temperature\/humidity). Implement accelerated life testing, monitoring insulation resistance decay over 500 hours at 85\u00b0C\/85% RH, ensuring the product meets safety standards throughout its lifecycle.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Is_polarity_fully_identified\"><\/span>(4) \u0647\u0644 \u062a\u0645 \u062a\u062d\u062f\u064a\u062f \u0627\u0644\u0642\u0637\u0628\u064a\u0629 \u0628\u0634\u0643\u0644 \u0643\u0627\u0645\u0644\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Build a multiple-polarity identification and error-proofing system. During PCB layout, use standardized packages for polar components (e.g., electrolytic capacitors, diodes, connectors), clearly marking polarity symbols (+, &#8211; \u25b3) on the silkscreen layer. Establish a DFA checklist requiring polarity mark size \u22651.5mm, positioned \u22640.5mm from the component body. Use asymmetric package designs to prevent 180-degree misinsertion. In the assembly process, set up AOI (Automated Optical Inspection) polarity check stations, using color recognition technology to distinguish polarity direction. Create first-article samples before mass production, verified by 3 independent personnel 3 times, ensuring the polarity identification system is reliable and effective.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Has_the_influence_of_conductor_spacing_on_leakage_resistance_and_voltage_been_evaluated_from_a_geometric_perspective\"><\/span>(5) \u0647\u0644 \u062a\u0645 \u062a\u0642\u064a\u064a\u0645 \u062a\u0623\u062b\u064a\u0631 \u062a\u0628\u0627\u0639\u062f \u0627\u0644\u0645\u0648\u0635\u0644\u0627\u062a \u0639\u0644\u0649 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0633\u0631\u0628 \u0648\u0627\u0644\u062c\u0647\u062f \u0645\u0646 \u0645\u0646\u0638\u0648\u0631 \u0647\u0646\u062f\u0633\u064a\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> \u062a\u0646\u0641\u064a\u0630 \u062a\u0635\u0645\u064a\u0645 \u0623\u062f\u0627\u0621 \u0643\u0647\u0631\u0628\u0627\u0626\u064a \u062a\u0639\u0627\u0648\u0646\u064a \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629. \u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0628\u0631\u0627\u0645\u062c \u0645\u062d\u0627\u0643\u0627\u0629 \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a (\u0645\u062b\u0644 ANSYS HFSS) \u0644\u0625\u0646\u0634\u0627\u0621 \u0646\u0645\u0627\u0630\u062c \u0647\u0646\u062f\u0633\u064a\u0629 \u0644\u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 (PCB)\u060c \u0648\u062a\u062d\u0644\u064a\u0644 \u062a\u0648\u0632\u064a\u0639 \u0627\u0644\u0645\u062c\u0627\u0644 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0648\u062a\u0633\u0631\u0628 \u0627\u0644\u062a\u064a\u0627\u0631 \u0639\u0646\u062f \u0645\u0633\u0627\u0641\u0627\u062a \u0645\u062e\u062a\u0644\u0641\u0629. \u0625\u0646\u0634\u0627\u0621 \u062c\u062f\u0648\u0644 \u0645\u0631\u062c\u0639\u064a \u0644\u0644\u0645\u0633\u0627\u0641\u0629 \u0648\u0627\u0644\u062c\u0647\u062f \u0648\u0641\u0642\u064b\u0627 \u0644\u0645\u0639\u0627\u064a\u064a\u0631 IPC-2221A (\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c 0.1 \u0645\u0645 \u0644\u0640 50 \u0641\u0648\u0644\u062a\u060c 0.2 \u0645\u0645 \u0644\u0640 100 \u0641\u0648\u0644\u062a).\u0627\u0633\u062a\u062e\u062f\u0645 \u062a\u0635\u0645\u064a\u0645\u0627\u062a \u0627\u0644\u0641\u062a\u062d\u0627\u062a \u0644\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0647\u062f \u0644\u0632\u064a\u0627\u062f\u0629 \u0645\u0633\u0627\u0641\u0629 \u0627\u0644\u0632\u062d\u0641\u060c \u0648\u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0647\u064a\u0627\u0643\u0644 \u0645\u0648\u062c\u064a\u0629 \u0645\u062a\u0648\u0627\u0632\u064a\u0629 \u0645\u0624\u0631\u0636\u0629 \u0644\u0644\u0625\u0634\u0627\u0631\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062a\u0631\u062f\u062f. \u062a\u062d\u0642\u0642 \u0645\u0646 \u0627\u0633\u062a\u0645\u0631\u0627\u0631\u064a\u0629 \u0627\u0644\u0645\u0639\u0627\u0648\u0642\u0629 \u0639\u0628\u0631 \u0642\u064a\u0627\u0633\u0627\u062a TDR\u060c \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u062c\u0647\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u0633\u0637\u062d\u064a\u0629 \u0644\u0642\u064a\u0627\u0633 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0633\u0631\u0628. \u0623\u0646\u0634\u0626 \u0645\u0643\u062a\u0628\u0629 \u0642\u0648\u0627\u0639\u062f \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u062a\u064a \u062a\u0631\u0628\u0637 \u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0628\u0627\u0644\u0623\u062f\u0627\u0621 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u060c \u0645\u0645\u0627 \u064a\u062a\u064a\u062d \u0627\u0644\u0641\u062d\u0635 \u0648\u0627\u0644\u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u062a\u0644\u0642\u0627\u0626\u064a.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Have_the_media_of_changed_surface_coatings_been_certified\"><\/span>(6) \u0647\u0644 \u062a\u0645 \u0627\u0639\u062a\u0645\u0627\u062f \u0648\u0633\u0627\u0626\u0637 \u0627\u0644\u0637\u0644\u0627\u0621\u0627\u062a \u0627\u0644\u0633\u0637\u062d\u064a\u0629 \u0627\u0644\u0645\u0639\u062f\u0644\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Establish a surface coating change certification process. Any coating change must pass complete qualification testing, including adhesion test (cross-cut \u22654B), chemical resistance test (resisting flux, cleaners), and dielectric constant measurement (1kHz-1GHz band). Perform damp heat cycling tests (-40\u00b0C to +85\u00b0C, 1000 cycles) to evaluate insulation resistance stability. Use SEM to analyze coating thickness uniformity (target 15-30\u03bcm). For high-frequency circuits, measure the coating&#8217;s impact on signal loss (\u22640.02dB\/inch). Establish a qualified supplier list, requiring material certificates and RoHS compliance certificates for each batch, ensuring consistent and reliable coating performance.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items.jpg\" alt=\"\u0628\u0646\u0648\u062f \u0641\u062d\u0635 PCB\" class=\"wp-image-8036\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-18x12.jpg 18w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Physical_Characteristic_Inspection_Solutions\"><\/span>\u062d\u0644\u0648\u0644 \u0641\u062d\u0635 \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Are_all_pads_and_their_positions_suitable_for_final_assembly\"><\/span>(1) \u0647\u0644 \u062c\u0645\u064a\u0639 \u0627\u0644\u0648\u0633\u0627\u062f\u0627\u062a \u0648\u0645\u0648\u0627\u0636\u0639\u0647\u0627 \u0645\u0646\u0627\u0633\u0628\u0629 \u0644\u0644\u062a\u062c\u0645\u064a\u0639 \u0627\u0644\u0646\u0647\u0627\u0626\u064a\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement DFA-based pad optimization design. Use 3D modeling software (e.g., SolidWorks PCB) for virtual assembly, verifying component pad-to-housing clearance (\u22650.5mm). Optimize pad dimensions according to IPC-7351 standards, establishing a component library update mechanism. Implement a pad steal design for BGA devices to prevent solder bridging. Use stepped pad designs to address height restrictions. Create assembly verification fixtures for actual insertion testing. Establish pad design specifications, clearly defining solder mask dam size (\u22650.1mm), pad-to-trace transition ratios, ensuring solder yield \u226599.5%.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Does_the_assembled_printed_circuit_board_meet_shock_and_vibration_conditions\"><\/span>(2) \u0647\u0644 \u062a\u0644\u0628\u064a \u0644\u0648\u062d\u0629 \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0627\u0644\u0645\u062c\u0645\u0639\u0629 \u0634\u0631\u0648\u0637 \u0627\u0644\u0635\u062f\u0645\u0627\u062a \u0648\u0627\u0644\u0627\u0647\u062a\u0632\u0627\u0632\u0627\u062a\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Build a mechanical reliability verification system. Select appropriate test standards (e.g., JESD22-B104) based on the product application environment (e.g., automotive, industrial). Perform modal analysis during the design phase to avoid coincident natural frequencies with operating frequencies (safety factor \u22651.35). Add mechanical fixation (e.g., screws, adhesive) for components weighing \u226515g. Conduct vibration tests (5-500Hz, 1 hour per axis) and shock tests (half-sine wave, 50G, 6ms). Use high-speed cameras to analyze board assembly dynamic response, and strain gauges to measure stress at key points. Optimize PCB support point layout, ensuring no component detachment, solder joint cracks, or other failures after reliability testing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_What_is_the_spacing_of_the_specified_standard_components\"><\/span>(3) \u0645\u0627 \u0647\u0648 \u0627\u0644\u062a\u0628\u0627\u0639\u062f \u0628\u064a\u0646 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0627\u0644\u0645\u062d\u062f\u062f\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Establish component spacing standards based on process capability. Develop tiered spacing specifications according to IPC-7351 and actual factory process levels: chip components \u22650.3mm, SOIC devices \u22650.6mm, QFP devices \u22650.8mm, BGA devices \u22650.5mm. Add an additional 0.5mm clearance for components beneath heat sinks. Automatically validate spacing compliance using DFM inspection software. Implement a local spacing exemption process for high-density designs, subject to process validation. Establish a component database containing 3D models and recommended spacing. New components must undergo spacing compatibility review before being added to the database to ensure manufacturability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Are_loosely_mounted_components_or_heavier_parts_securely_fixed\"><\/span>(4) \u0647\u0644 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0645\u062b\u0628\u062a\u0629 \u0628\u0634\u0643\u0644 \u063a\u064a\u0631 \u0645\u062d\u0643\u0645 \u0623\u0648 \u0627\u0644\u0623\u062c\u0632\u0627\u0621 \u0627\u0644\u062b\u0642\u064a\u0644\u0629 \u0645\u062b\u0628\u062a\u0629 \u0628\u0625\u062d\u0643\u0627\u0645\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement specialized fixation solutions for heavy components. Create a list of components weighing \u22655g or size \u226515mm, mandating mechanical fixation. Use screws + washers for transformers and large electrolytic capacitors, specifying screw torque (e.g., 0.6N\u00b7m \u00b110%). Use high-temperature adhesive for medium-sized components, verifying bond strength after 24 hours at 85\u00b0C. Reserve space for fixation structures around heavy components during design. Specify fixation operation procedures in process documents, setting dedicated inspection points for fixation stations. After mechanical shock testing, use X-ray to inspect the solder joint and the fixation structure integrity, ensuring secure fixation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Is_heat_dissipation_for_heating_elements_correct_Are_they_isolated_from_the_PCB_and_other_heat-sensitive_components\"><\/span>(5) \u0647\u0644 \u062a\u0628\u062f\u064a\u062f \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0644\u0639\u0646\u0627\u0635\u0631 \u0627\u0644\u062a\u0633\u062e\u064a\u0646 \u0635\u062d\u064a\u062d\u061f \u0647\u0644 \u0647\u064a \u0645\u0639\u0632\u0648\u0644\u0629 \u0639\u0646 \u0644\u0648\u062d\u0629 \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0623\u062e\u0631\u0649 \u0627\u0644\u062d\u0633\u0627\u0633\u0629 \u0644\u0644\u062d\u0631\u0627\u0631\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Build a thermal design and management verification system. Use thermal simulation software (e.g., FloTHERM) to identify heat sources and thermally sensitive components, optimizing layout spacing (\u22655mm between heat sources and thermally sensitive components). Use thermal vias (0.3mm diameter, 1mm pitch) for power devices, connected to internal ground planes for heat dissipation. Ensure thermal grease thickness is 0.1-0.15mm at the interface when adding heat sinks. Perform infrared thermal imaging tests, verifying actual temperatures do not exceed 85% of rated values. Implement thermal isolation measures for high-temperature areas: adding heat shields, using high-temperature solder, and setting up heat dissipation channels. Establish temperature rise test standards, ensuring maximum PCB surface temperature difference \u226425\u00b0C.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Are_voltage_dividers_and_other_multi-lead_components_correctly_positioned\"><\/span>(6) \u0647\u0644 \u062a\u0645 \u0648\u0636\u0639 \u0645\u0642\u0633\u0645\u0627\u062a \u0627\u0644\u062c\u0647\u062f \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0623\u0633\u0644\u0627\u0643 \u0627\u0644\u0623\u062e\u0631\u0649 \u0641\u064a \u0627\u0644\u0645\u0648\u0636\u0639 \u0627\u0644\u0635\u062d\u064a\u062d\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement precise positioning control for multi-lead components. Use an optical positioning system (e.g., Fiducial Mark), placing \u22652 fiducials around each multi-lead component, 0.5-1mm from pads. For high-precision components like voltage dividers, maintain symmetry and equal-length routing during layout to minimize temperature gradient effects. Use package designs with pad center-to-center accuracy of \u00b10.05mm. Set component image recognition parameters in the placement program, with rotation tolerance \u22641\u00b0. Verify positioning accuracy on the first article using a 3D measuring instrument, sampling every 2 hours during mass production. Establish a multi-lead component database containing recommended layouts and inspection requirements, ensuring positioning consistency.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"7_Is_the_component_arrangement_and_orientation_conducive_to_inspection\"><\/span>(7) \u0647\u0644 \u062a\u0631\u062a\u064a\u0628 \u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0648\u0627\u062a\u062c\u0627\u0647\u0647\u0627 \u064a\u0633\u0627\u0639\u062f\u0627\u0646 \u0639\u0644\u0649 \u0627\u0644\u0641\u062d\u0635\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Optimize component layout for visual inspection. Develop component orientation standards: unify direction for the same type of component (e.g., all chip pin 1s facing left), polarity marks facing the same direction. Ensure component spacing allows AOI camera viewing angle \u226545\u00b0, and 100% probe accessibility. Reserve inspection windows adjacent to bottom-termination components (e.g., QFN). Implement a layered inspection strategy for high-density areas: inspect large components first, then use microscopes for fine-pitch components. Establish a DFA checklist containing 25 visibility criteria. Create inspection fixtures, verifying 100% inspection coverage and \u22640.1% false call rate.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"402\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-2.jpg\" alt=\"\u0628\u0646\u0648\u062f \u0641\u062d\u0635 PCB\" class=\"wp-image-8037\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-2.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-2-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-2-18x12.jpg 18w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/10\/PCB-Inspection-Items-2-150x101.jpg 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"8_Have_all_potential_interferences_between_the_PCB_and_the_entire_board_assembly_been_eliminated\"><\/span>(8) \u0647\u0644 \u062a\u0645 \u0627\u0644\u0642\u0636\u0627\u0621 \u0639\u0644\u0649 \u062c\u0645\u064a\u0639 \u0627\u0644\u062a\u062f\u0627\u062e\u0644\u0627\u062a \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0628\u064a\u0646 PCB \u0648\u0645\u062c\u0645\u0648\u0639\u0629 \u0627\u0644\u0644\u0648\u062d\u0629 \u0628\u0623\u0643\u0645\u0644\u0647\u0627\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement system-level interference analysis and elimination strategies. Use 3D modeling for mechanical interference checking, ensuring clearance to housing and connectors \u22650.3mm. Set keep-out zones around tall components, with \u22652mm spacing from adjacent boards. Match coefficients of thermal expansion to avoid structural interference from temperature cycling. Optimize assembly sequence, installing short\/small components before tall\/large ones. Create rapid prototypes for assembly verification, using feeler gauges to measure critical clearances. Establish an interference check matrix covering all possible combination states, ensuring no risk of physical interference.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"9_Are_the_dimensions_of_the_positioning_holes_correct\"><\/span>(9) \u0647\u0644 \u0623\u0628\u0639\u0627\u062f \u0641\u062a\u062d\u0627\u062a \u0627\u0644\u062a\u062b\u0628\u064a\u062a \u0635\u062d\u064a\u062d\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Establish a positioning hole accuracy control system. According to IPC-2221 standards, the positioning hole diameter should be 0.1-0.3mm larger than the fixing pin (for board edge holes) or 0.05-0.1mm larger (for internal holes). For 4-layer boards, set a keep-out zone (\u22651.5 times hole diameter) around positioning holes. For plated positioning holes, ensure the inner wall copper thickness \u226525\u03bcm for mechanical strength. Check the first article of each PCB batch using pin gauges for hole diameter (tolerance \u00b10.05mm), and a CMM for hole position accuracy (\u00b10.1mm). Install positioning detection sensors in assembly fixtures, with automatic alarms for anomalies, ensuring 100% positioning reliability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"10_Are_the_tolerances_complete_and_reasonable\"><\/span>(10) \u0647\u0644 \u0627\u0644\u062a\u0641\u0627\u0648\u062a\u0627\u062a \u0645\u0643\u062a\u0645\u0644\u0629 \u0648\u0645\u0639\u0642\u0648\u0644\u0629\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement process capability-based tolerance design. Analyze process capability indices (Cp\u22651.33, Cpk\u22651.0) for each PCB manufacturing and assembly step, setting reasonable tolerances: line width tolerance \u00b110%, hole position tolerance \u00b10.05mm, board warpage \u22640.75%. Use statistical tolerance analysis to avoid tolerance stack-up exceeding limits. Implement tightened tolerance control for critical dimensions, e.g., BGA pad diameter tolerance \u00b10.02mm. Establish a tolerance allocation table, clearly defining responsibilities for design, manufacturing, and assembly. Use GD&amp;T standards on drawings, regularly review tolerance applicability, and continuously optimize based on actual yield data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"11_Have_the_physical_properties_of_all_coatings_been_controlled_and_qualified\"><\/span>(11) \u0647\u0644 \u062a\u0645 \u0627\u0644\u062a\u062d\u0643\u0645 \u0641\u064a \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629 \u0644\u062c\u0645\u064a\u0639 \u0627\u0644\u0637\u0644\u0627\u0621\u0627\u062a \u0648\u062a\u0623\u0647\u064a\u0644\u0647\u0627\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Establish a full lifecycle quality management system for coatings. Set physical property standards for solder mask, silkscreen, and surface finishes (e.g., ENIG, OSP): solder mask thickness 15-25\u03bcm, adhesion \u22654B, hardness \u22656H. Perform sampling inspection for each incoming batch: use thickness gauges for uniformity, cross-cut test for adhesion, wear resistance tester for hardness. Conduct accelerated aging tests (1000 hours at 85\u00b0C\/85% RH) to verify physical property stability. Establish a material traceability system, strictly control storage conditions (temperature 15-30\u00b0C, humidity &lt;60%), clearly mark expiration dates, and ensure consistent and reliable coating performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"12_Is_the_hole-to-lead_diameter_ratio_within_an_acceptable_range\"><\/span>(12) \u0647\u0644 \u0646\u0633\u0628\u0629 \u0642\u0637\u0631 \u0627\u0644\u062b\u0642\u0628 \u0625\u0644\u0649 \u0642\u0637\u0631 \u0627\u0644\u0631\u0635\u0627\u0635 \u0636\u0645\u0646 \u0627\u0644\u0646\u0637\u0627\u0642 \u0627\u0644\u0645\u0642\u0628\u0648\u0644\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> Implement aperture and lead matching design controls. According to IPC-2221 standards, set appropriate aspect ratios for different component types: Through-hole components require apertures 0.2-0.4mm larger than lead diameter, with a 0.1-0.3mm solder pad; press-fit components require apertures 0.05-0.1mm larger than lead diameter. Employ DFM analysis software to automatically verify aperture ratio compliance. Implement microvia design for high-density boards while ensuring the aperture ratio does not exceed 10:1 (board thickness: aperture diameter). Fabricate aperture ratio verification prototypes and conduct through-hole solder fill rate testing, requiring a fill rate \u226575%. Establish aperture ratio design specifications; new components must pass aperture ratio compatibility review before inventory acceptance to ensure reliable solderability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"13_Does_the_PCB_meet_Electromagnetic_Compatibility_EMC_requirements\"><\/span>(13) \u0647\u0644 \u062a\u0641\u064a \u0627\u0644\u0644\u0648\u062d\u0629 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 \u0628\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u0648\u0627\u0641\u0642 \u0627\u0644\u0643\u0647\u0631\u0648\u0645\u063a\u0646\u0627\u0637\u064a\u0633\u064a (EMC)\u061f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0627\u0644\u062d\u0644:<\/strong> \u0642\u0645 \u0628\u0628\u0646\u0627\u0621 \u0646\u0638\u0627\u0645 \u062a\u062d\u0643\u0645 EMC \u0643\u0627\u0645\u0644 \u0645\u0646 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0625\u0644\u0649 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631. \u0642\u0645 \u0628\u062a\u0646\u0641\u064a\u0630 \u0645\u062d\u0627\u0643\u0627\u0629 \u0645\u0634\u062a\u0631\u0643\u0629 SI\/PI\/EMC \u0623\u062b\u0646\u0627\u0621 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0644\u062a\u062d\u062f\u064a\u062f \u0645\u0635\u0627\u062f\u0631 \u0627\u0644\u062a\u062f\u0627\u062e\u0644 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629 \u0648\u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u062d\u0633\u0627\u0633\u0629. \u0627\u0639\u062a\u0645\u062f \u0627\u0633\u062a\u0631\u0627\u062a\u064a\u062c\u064a\u0629 \u062a\u0623\u0631\u064a\u0636 \u0645\u062a\u0639\u062f\u062f\u0629 \u0627\u0644\u0637\u0628\u0642\u0627\u062a\u060c \u0645\u0639 \u0639\u0632\u0644 \u0627\u0644\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0631\u0642\u0645\u064a\u0629 \u0648\u0627\u0644\u062a\u0646\u0627\u0638\u0631\u064a\u0629 \u0648\u0645\u0646\u0627\u0637\u0642 \u0627\u0644\u0637\u0627\u0642\u0629. \u0648\u0641\u0631 \u0645\u0633\u062a\u0648\u064a\u0627\u062a \u0645\u0631\u062c\u0639\u064a\u0629 \u0643\u0627\u0645\u0644\u0629 \u0644\u0644\u0625\u0634\u0627\u0631\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u0633\u0631\u0639\u0629\u060c \u0645\u0639 \u062a\u062c\u0646\u0628 \u0627\u0644\u0627\u0646\u0642\u0633\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u062a\u0642\u0627\u0637\u0639\u0629. \u0636\u0639 \u0645\u0633\u0627\u0631\u0627\u062a \u062a\u0623\u0631\u064a\u0636 \u062d\u0648\u0644 \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0633\u0627\u0639\u0629 \u0644\u0644\u062d\u0645\u0627\u064a\u0629\u060c \u0648\u0627\u0633\u062a\u062e\u062f\u0645 \u0647\u064a\u0627\u0643\u0644 \u062e\u0637\u0648\u0637 \u0634\u0631\u064a\u0637\u064a\u0629 \u0644\u0644\u0625\u0634\u0627\u0631\u0627\u062a \u0627\u0644\u062d\u0631\u062c\u0629.\u0623\u0636\u0641 \u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u062a\u0635\u0641\u064a\u0629 \u0627\u0644\u0644\u0627\u0632\u0645\u0629 (\u0645\u062b\u0644 \u062d\u0628\u064a\u0628\u0627\u062a \u0627\u0644\u0641\u0631\u064a\u062a\u060c \u0648\u062b\u0646\u0627\u0626\u064a\u0627\u062a TVS). \u0627\u0633\u062a\u062e\u062f\u0645 \u0645\u0639\u062f\u0627\u062a \u0627\u062e\u062a\u0628\u0627\u0631 EMC (\u0645\u062d\u0644\u0644 \u0627\u0644\u0637\u064a\u0641\u060c \u0645\u0633\u062a\u0642\u0628\u0644 EMI) \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u0627 \u0642\u0628\u0644 \u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644\u060c \u0648\u062a\u0634\u062e\u064a\u0635 \u0645\u0634\u0643\u0644\u0627\u062a \u0627\u0644\u0627\u0646\u0628\u0639\u0627\u062b\u0627\u062a \u0627\u0644\u0645\u0634\u0639\u0629 \u0648\u0627\u0644\u0645\u0648\u0635\u0644\u0629. \u0645\u0646 \u062e\u0644\u0627\u0644 \u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u062a\u062e\u0637\u064a\u0637\/\u0627\u0644\u062a\u0648\u062c\u064a\u0647\u060c \u0648\u0625\u0636\u0627\u0641\u0629 \u0627\u0644\u062f\u0631\u0648\u0639\u060c \u0648\u0645\u0627 \u0625\u0644\u0649 \u0630\u0644\u0643\u060c \u062a\u0623\u0643\u062f \u0645\u0646 \u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644 \u0644\u0645\u0639\u0627\u064a\u064a\u0631 FCC \u0648 CE \u0648\u0645\u0639\u0627\u064a\u064a\u0631 EMC \u0627\u0644\u0623\u062e\u0631\u0649\u060c \u0648\u0627\u062c\u062a\u064a\u0627\u0632 \u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u0627\u0639\u062a\u0645\u0627\u062f \u0645\u0646 \u0627\u0644\u0645\u062d\u0627\u0648\u0644\u0629 \u0627\u0644\u0623\u0648\u0644\u0649.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u064a\u0639\u062f \u0641\u062d\u0635 \u062e\u0635\u0627\u0626\u0635 \u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u0645\u0637\u0628\u0648\u0639\u0629 (PCB) \u062e\u0637\u0648\u0629 \u062d\u0627\u0633\u0645\u0629 \u0644\u0636\u0645\u0627\u0646 \u062a\u0648\u0627\u0641\u0642 \u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0626\u0631 \u0645\u0639 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0648\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062c\u0648\u062f\u0629. \u062a\u0648\u0641\u0631 \u0642\u0627\u0626\u0645\u0629 \u0627\u0644\u0645\u0631\u0627\u062c\u0639\u0629 \u0627\u0644\u0634\u0627\u0645\u0644\u0629 \u0647\u0630\u0647\u060c \u0627\u0644\u062a\u064a \u062a\u063a\u0637\u064a \u0641\u062d\u0648\u0635\u0627\u062a \u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a\u0629 \u0648\u0627\u0644\u062e\u0635\u0627\u0626\u0635 \u0627\u0644\u0641\u064a\u0632\u064a\u0627\u0626\u064a\u0629\u060c \u0644\u0645\u0647\u0646\u062f\u0633\u064a \u062a\u0635\u0645\u064a\u0645 \u0644\u0648\u062d\u0627\u062a \u0627\u0644\u062f\u0648\u0627\u0626<\/p>","protected":false},"author":2,"featured_media":8035,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[52],"class_list":["post-8034","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-pcb"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PCB Circuit Board Characteristic Inspection Items and Solutions - Topfastpcba<\/title>\n<meta name=\"description\" content=\"A comprehensive checklist and professional solutions for PCB circuit board characteristic inspections, covering critical aspects such as electrical property checks and physical property inspections. 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