{"id":6695,"date":"2025-05-23T08:30:00","date_gmt":"2025-05-23T00:30:00","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=6695"},"modified":"2025-10-22T17:08:57","modified_gmt":"2025-10-22T09:08:57","slug":"how-to-test-smd-inductor","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/ar\/how-to-test-smd-inductor\/","title":{"rendered":"\u0643\u064a\u0641 \u062a\u062e\u062a\u0628\u0631 \u0645\u062d\u062b SMD\u061f"},"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\/how-to-test-smd-inductor\/#Comprehensive_Guide_to_Testing_SMD_Inductors\" >\u0627\u0644\u062f\u0644\u064a\u0644 \u0627\u0644\u0634\u0627\u0645\u0644 \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u062d\u0627\u062b\u0627\u062a SMD<\/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\/how-to-test-smd-inductor\/#I_Testing_Principles_and_Importance\" >I. \u0645\u0628\u0627\u062f\u0626 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u0623\u0647\u0645\u064a\u062a\u0647<\/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\/how-to-test-smd-inductor\/#II_Instrument_Selection_Guide\" >\u062b\u0627\u0646\u064a\u064b\u0627.\u062f\u0644\u064a\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0623\u062f\u0627\u0629<\/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\/how-to-test-smd-inductor\/#III_Standardized_Testing_Procedure\" >\u062b\u0627\u0644\u062b\u0627\u064b.\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u0648\u062d\u062f\u0629<\/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\/how-to-test-smd-inductor\/#IV_Advanced_Testing_Techniques\" >\u0631\u0627\u0628\u0639\u0627\u064b.\u062a\u0642\u0646\u064a\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u062a\u0642\u062f\u0645\u0629<\/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\/how-to-test-smd-inductor\/#V_Troubleshooting_Guide\" >V.\u062f\u0644\u064a\u0644 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0627\u0644\u0623\u062e\u0637\u0627\u0621 \u0648\u0625\u0635\u0644\u0627\u062d\u0647\u0627<\/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\/how-to-test-smd-inductor\/#VI_Test_Report_Template\" >\u0633\u0627\u062f\u0633\u0627\u064b.\u0646\u0645\u0648\u0630\u062c \u062a\u0642\u0631\u064a\u0631 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Comprehensive_Guide_to_Testing_SMD_Inductors\"><\/span>\u0627\u0644\u062f\u0644\u064a\u0644 \u0627\u0644\u0634\u0627\u0645\u0644 \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u062d\u0627\u062b\u0627\u062a SMD<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"I_Testing_Principles_and_Importance\"><\/span>I. \u0645\u0628\u0627\u062f\u0626 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u0623\u0647\u0645\u064a\u062a\u0647<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0623\u0633\u0627\u0633\u064a\u0627\u062a <a href=\"https:\/\/topfastpcba.com\/ar\/what-is-an-inductor\/\">\u0627\u0644\u0645\u062d\u0631\u0650\u0651\u0636<\/a> \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Based on the AC impedance method: L=XL\/(2\u03c0f), where XL is inductive reactance and f is the test frequency<\/li>\n\n\n\n<li>Quality factor Q reflects energy storage efficiency: Q=2\u03c0fL\/R<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u062a\u062d\u0644\u064a\u0644 \u0645\u0635\u062f\u0631 \u0627\u0644\u062e\u0637\u0623<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062a\u0623\u062b\u064a\u0631\u0627\u062a \u0627\u0644\u0637\u0641\u064a\u0644\u064a\u0629 (\u0627\u0644\u0633\u0639\u0629 \u0627\u0644\u0645\u0648\u0632\u0639\u0629 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629 0.1 - 0.5pF)<\/li>\n\n\n\n<li>Contact resistance (should be &lt;50m\u03a9)<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u062f\u0627\u062e\u0644 \u0627\u0644\u0628\u064a\u0626\u064a (\u063a\u0631\u0641\u0629 \u0645\u062d\u0645\u064a\u0629 \u0645\u0648\u0635\u0649 \u0628\u0647\u0627 \u0644\u0627\u062e\u062a\u0628\u0627\u0631\u0627\u062a \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0639\u0627\u0644\u064a\u0629)<\/li>\n<\/ul>\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\/05\/Smd-Inductor-2.jpg\" alt=\"\u0645\u062d\u062b SMD\" class=\"wp-image-6697\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor-2.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor-2-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor-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=\"II_Instrument_Selection_Guide\"><\/span>\u062b\u0627\u0646\u064a\u064b\u0627.\u062f\u0644\u064a\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0623\u062f\u0627\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u062c\u062f\u0648\u0644 \u0645\u0642\u0627\u0631\u0646\u0629 \u0627\u0644\u0623\u062f\u0648\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/strong> <\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0641\u0626\u0629 \u0627\u0644\u0623\u062f\u0627\u0629<\/th><th>\u0646\u0637\u0627\u0642 \u0627\u0644\u0642\u064a\u0627\u0633<\/th><th>\u0627\u0644\u062f\u0642\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629<\/th><th>\u0646\u0637\u0627\u0642 \u0627\u0644\u062a\u0631\u062f\u062f<\/th><th>\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/th><th>\u0627\u0644\u0646\u0645\u0627\u0630\u062c \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0641\u064a \u0627\u0644\u0635\u0646\u0627\u0639\u0629<\/th><\/tr><\/thead><tbody><tr><td>\u0645\u0642\u064a\u0627\u0633 LCR \u0627\u0644\u062f\u0642\u064a\u0642<\/td><td>1\u0646 \u0647\u0640 \u0648#8211\u061b 100 \u0647\u0640<\/td><td>\u00b10.1% basic<\/td><td>20 \u0647\u0631\u062a\u0632 &amp;#8211\u061b 300 \u0643\u064a\u0644\u0648 \u0647\u0631\u062a\u0632<\/td><td>\u0641\u0644\u0627\u062a\u0631 \u0625\u0645\u062f\u0627\u062f \u0627\u0644\u0637\u0627\u0642\u0629\u060c \u0645\u062d\u0648\u0644\u0627\u062a \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631-\u0627\u0644\u062a\u0631\u062f\u062f \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/td><td>Keysight E4980A\u060c Hioki IM3536\u060c Keysight E4980A\u060c Hioki IM3536<\/td><\/tr><tr><td>\u0645\u0642\u064a\u0627\u0633 LCR \u0644\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0644\u0627\u0633\u0644\u0643\u064a\u0629<\/td><td>0.1nH &amp;#8211\u061b 1kH<\/td><td>\u00b10.05%<\/td><td>1 \u0643\u064a\u0644\u0648 \u0647\u0631\u062a\u0632 &amp;#8211\u061b 30 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632<\/td><td>\u0634\u0628\u0643\u0627\u062a \u0645\u0637\u0627\u0628\u0642\u0629 \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0631\u0627\u062f\u064a\u0648\u064a\u0629 \u0648\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0639\u0627\u0644\u064a\u0629<\/td><td>GW Instek LCR-800G\u060c Wayne Kerr 6500B\u060c GW Instek LCR-800G\u060c GW Instek LCR-800G\u060c Wayne Kerr 6500B<\/td><\/tr><tr><td>\u0645\u062d\u0644\u0644 \u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0645\u062a\u062c\u0647\u0629<\/td><td>0.01nH &amp;#8211\u061b 10H<\/td><td>\u00b10.02dB magnitude<\/td><td>100 \u0643\u064a\u0644\u0648 \u0647\u0631\u062a\u0632 &amp;#8211\u061b 20 \u062c\u064a\u062c\u0627 \u0647\u0631\u062a\u0632<\/td><td>\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0645\u0648\u062c\u0627\u062a \u0627\u0644\u062f\u0642\u064a\u0642\u0629\u060c \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0647\u0648\u0627\u0626\u064a<\/td><td>R&amp;S ZNB20\u060c Keysight PNA\u060c R&amp;S ZNB20\u060c Keysight PNA<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>    2.<strong>\u0634\u062c\u0631\u0629 \u0642\u0631\u0627\u0631 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"731\" height=\"329\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg\" alt=\"\" class=\"wp-image-6696\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree.jpg 731w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-300x135.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Selection-Decision-Tree-150x68.jpg 150w\" sizes=\"auto, (max-width: 731px) 100vw, 731px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"III_Standardized_Testing_Procedure\"><\/span>\u062b\u0627\u0644\u062b\u0627\u064b.\u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u0648\u062d\u062f\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0645\u0631\u062d\u0644\u0629 \u0627\u0644\u0625\u0639\u062f\u0627\u062f<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0645\u0639\u0627\u0644\u062c\u0629 \u0633\u0637\u062d \u0627\u0644\u062a\u0644\u0627\u0645\u0633:<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0628\u0627\u0644\u0645\u0648\u062c\u0627\u062a \u0641\u0648\u0642 \u0627\u0644\u0635\u0648\u062a\u064a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0623\u064a\u0632\u0648\u0628\u0631\u0648\u0628\u0627\u0646\u0648\u0644 (3 \u062f\u0642\u0627\u0626\u0642)<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u0646\u0638\u064a\u0641 \u0628\u0627\u0644\u0628\u0644\u0627\u0632\u0645\u0627 \u0644\u0644\u0623\u0643\u0633\u062f\u0629 \u0627\u0644\u0634\u062f\u064a\u062f\u0629 (50 \u0648\u0627\u062a\u060c \u062f\u0642\u064a\u0642\u062a\u0627\u0646)<\/li>\n\n\n\n<li>\u0627\u0644\u062a\u062d\u0643\u0645 \u0627\u0644\u0628\u064a\u0626\u064a:<\/li>\n\n\n\n<li>Temperature 23\u00b11\u2103 (30 min thermal stabilization)<\/li>\n\n\n\n<li>\u0627\u0644\u0631\u0637\u0648\u0628\u0629 &lt;45% \u0631\u0637\u0648\u0628\u0629 \u0631\u0637\u0648\u0628\u0629 \u0646\u0633\u0628\u064a\u0629<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u062e\u0637\u0648\u0627\u062a \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u062a\u0641\u0635\u064a\u0644\u064a\u0629<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0645\u062b\u0627\u0644 \u0644\u0645\u062d\u0631\u0650\u0651\u0636 \u0627\u0644\u062d\u0632\u0645\u0629 0402:<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u062e\u062a\u064a\u0627\u0631 \u0623\u062f\u0627\u0629 \u0627\u062e\u062a\u0628\u0627\u0631 \u062b\u0644\u0627\u062b\u064a\u0629 \u0627\u0644\u0645\u062d\u0627\u0648\u0631 (\u0645\u062b\u0644 Cascade Microtech ACP40)<\/li>\n\n\n\n<li>\u0636\u0628\u0637 \u0634\u0631\u0648\u0637 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631:<br><code>\u0627\u0644\u062a\u0631\u062f\u062f = [100 \u0643\u064a\u0644\u0648 \u0647\u0631\u062a\u0632\u060c 1 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632\u060c 10 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632] \u0627\u0644\u062a\u062d\u064a\u0632 = [0 \u0645\u0644\u0644\u064a \u0623\u0645\u0628\u064a\u0631\u060c 10 \u0645\u0644\u0644\u064a \u0623\u0645\u0628\u064a\u0631]<\/code><\/li>\n\n\n\n<li>\u0625\u062c\u0631\u0627\u0621 \u062a\u0639\u0648\u064a\u0636 \u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0644\u0627\u0645\u0633 (\u0637\u0631\u064a\u0642\u0629 4 \u0623\u0633\u0644\u0627\u0643)<\/li>\n\n\n\n<li><strong>\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sampling: \u226516 averages<\/li>\n\n\n\n<li>\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u062b\u0628\u0627\u062a: &lt;0.5% \u062a\u0628\u0627\u064a\u0646 \u0639\u0628\u0631 3 \u0642\u0631\u0627\u0621\u0627\u062a \u0645\u062a\u062a\u0627\u0644\u064a\u0629<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"IV_Advanced_Testing_Techniques\"><\/span>\u0631\u0627\u0628\u0639\u0627\u064b.\u062a\u0642\u0646\u064a\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0645\u062a\u0642\u062f\u0645\u0629<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u062a\u0648\u0635\u064a\u0641 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Setup: Thermal chamber (-55\u2103~+150\u2103)<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/li>\n\n\n\n<li>Temperature coefficient TC=\u0394L\/(L0\u00d7\u0394T)<\/li>\n\n\n\n<li>Typical value: \u00b130ppm\/\u2103 (ferrite materials)<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u062a\u0648\u0635\u064a\u0641 \u062a\u062d\u064a\u0632 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u062a\u0647\u064a\u0626\u0629: \u0645\u0635\u062f\u0631 \u062a\u064a\u0627\u0631 \u0642\u0627\u0628\u0644 \u0644\u0644\u0628\u0631\u0645\u062c\u0629 (0-10 \u0623\u0645\u0628\u064a\u0631)<\/li>\n\n\n\n<li>\u062a\u062d\u0644\u064a\u0644 \u0627\u0644\u0645\u0646\u062d\u0646\u0649:<\/li>\n\n\n\n<li>\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0634\u0628\u0639 Isat (\u0627\u0644\u062a\u064a\u0627\u0631 \u0639\u0646\u062f \u0627\u0646\u062e\u0641\u0627\u0636 10\u066a L)<\/li>\n\n\n\n<li>\u062a\u062f\u0647\u0648\u0631 \u0627\u0644\u0646\u0641\u0627\u0630\u064a\u0629<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u0628\u0627\u0631\u0627\u0645\u062a\u0631 \u0639\u0627\u0644\u064a \u0627\u0644\u062a\u0631\u062f\u062f<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0642\u064a\u0627\u0633 \u0627\u0644\u0628\u0627\u0631\u0627\u0645\u062a\u0631 S (1 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632 - 20 \u062c\u064a\u062c\u0627 \u0647\u0631\u062a\u0632)<\/li>\n\n\n\n<li>\u0627\u0644\u0645\u0642\u0627\u064a\u064a\u0633 \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629:<\/li>\n\n\n\n<li>\u062a\u0631\u062f\u062f \u0627\u0644\u0631\u0646\u064a\u0646 \u0627\u0644\u0630\u0627\u062a\u064a (SRF)<\/li>\n\n\n\n<li>\u0645\u0646\u062d\u0646\u0649 \u062a\u0631\u062f\u062f \u0639\u0627\u0645\u0644 Q-\u0639\u0627\u0645\u0644 Q<\/li>\n<\/ul>\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\/05\/Smd-Inductor.jpg\" alt=\"\" class=\"wp-image-6699\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor.jpg 600w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor-300x201.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/05\/Smd-Inductor-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=\"V_Troubleshooting_Guide\"><\/span>V.\u062f\u0644\u064a\u0644 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0627\u0644\u0623\u062e\u0637\u0627\u0621 \u0648\u0625\u0635\u0644\u0627\u062d\u0647\u0627<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u062c\u062f\u0648\u0644 \u062a\u0634\u062e\u064a\u0635 \u0627\u0644\u0634\u0630\u0648\u0630 \u0641\u064a \u0627\u0644\u0642\u064a\u0627\u0633<\/strong> <\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0627\u0644\u0639\u064e\u0631\u064e\u0636<\/th><th>\u0627\u0644\u0623\u0633\u0628\u0627\u0628 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629<\/th><th>\u0627\u0644\u062d\u0644\u0648\u0644 \u0627\u0644\u0645\u0648\u0635\u0649 \u0628\u0647\u0627<\/th><th>\u0627\u0644\u0645\u0644\u0627\u062d\u0638\u0627\u062a \u0627\u0644\u0641\u0646\u064a\u0629<\/th><\/tr><\/thead><tbody><tr><td>\u0642\u0631\u0627\u0621\u0629 \u0627\u0644\u0627\u0646\u062c\u0631\u0627\u0641 \u0641\u064a \u0627\u0644\u0642\u0631\u0627\u0621\u0629<\/td><td>\u2022 Poor contact (Rcontact &gt;50m\u03a9)<br>\u2022 Loose fixture<br>\u2022 Temperature fluctuation<\/td><td>\u2022 Use gold-plated spring probes<br>\u2022 Apply contact cleaner (e.g., DeoxIT D5)<br>\u2022 Stabilize test environment (\u00b11\u00b0C)<\/td><td>Contact resistance should be &lt;20m\u03a9 for nH-range measurements<\/td><\/tr><tr><td>\u0642\u064a\u0645\u0629 Q \u0645\u0646\u062e\u0641\u0636\u0629<\/td><td>\u2022 Core material loss (tan\u03b4&gt;0.1)<br>\u2022 Frequency near SRF<br>\u2022 Excessive DC bias<\/td><td>\u2022 Test at manufacturer-specified freq<br>\u2022 Reduce DC bias to &lt;10% Isat<br>\u2022 Verify core material specs<\/td><td>\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0644\u0627\u0633\u0644\u0643\u064a\u0629: \u064a\u0634\u064a\u0631 Q&lt;30@100 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632 \u0625\u0644\u0649 \u0645\u0634\u0643\u0644\u0629 \u0645\u062d\u062a\u0645\u0644\u0629<\/td><\/tr><tr><td>\u0642\u064a\u0645\u0629 L \u0627\u0644\u0633\u0627\u0644\u0628\u0629<\/td><td>\u2022 Testing beyond SRF<br>\u2022 Fixture capacitance (&gt;1pF)<br>\u2022 Ground loop issues<\/td><td>\u2022 Test at \u226450% of SRF<br>\u2022 Use low-C fixtures (e.g., triaxial)<br>\u2022 Implement ground isolation<\/td><td>Maintain SRF \u22653\u00d7 operating frequency for reliable measureme<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0645\u0639\u0644\u0645\u0627\u062a \u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a\u0629<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u062f\u0648\u0627\u0626\u0631 \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0644\u0627\u0633\u0644\u0643\u064a\u0629 \u0627\u0644\u0645\u062a\u0646\u0642\u0644\u0629:<\/li>\n\n\n\n<li>\u062a\u0631\u062f\u062f \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631: 2.4\/5.8 \u062c\u064a\u062c\u0627\u0647\u0631\u062a\u0632<\/li>\n\n\n\n<li>Tolerance: \u00b12%<\/li>\n\n\n\n<li>\u0637\u0627\u0642\u0629 \u0627\u0644\u062e\u0627\u062f\u0645:<\/li>\n\n\n\n<li>\u0627\u0646\u062d\u064a\u0627\u0632 \u0627\u0644\u062a\u064a\u0627\u0631 \u0627\u0644\u0645\u0633\u062a\u0645\u0631: 20 \u0623\u0645\u0628\u064a\u0631<\/li>\n\n\n\n<li>Thermal requirement: \u0394L&lt;5%@105\u2103<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"VI_Test_Report_Template\"><\/span>\u0633\u0627\u062f\u0633\u0627\u064b.\u0646\u0645\u0648\u0630\u062c \u062a\u0642\u0631\u064a\u0631 \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629<\/strong><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0627\u0644\u0633\u062c\u0644\u0627\u062a \u0627\u0644\u0628\u064a\u0626\u064a\u0629 (\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\/\u0627\u0644\u0631\u0637\u0648\u0628\u0629\/\u0627\u0644\u0636\u063a\u0637)<\/li>\n\n\n\n<li>\u0645\u0639\u0631\u0651\u0641 \u0634\u0647\u0627\u062f\u0629 \u0645\u0639\u0627\u064a\u0631\u0629 \u0627\u0644\u062c\u0647\u0627\u0632<\/li>\n\n\n\n<li>\u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u0627\u0644\u0623\u0648\u0644\u064a\u0629 \u0645\u0639 \u0627\u0644\u0637\u0648\u0627\u0628\u0639 \u0627\u0644\u0632\u0645\u0646\u064a\u0629<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0645\u062b\u0627\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a<\/strong><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u0631\u0642\u0645 \u0627\u0644\u062f\u0641\u0639\u0629<\/th><th>\u0627\u0644\u062d\u062b \u0639\u0646\u062f 1 \u0645\u064a\u062c\u0627 \u0647\u0631\u062a\u0632 (nH)<\/th><th>\u0639\u0627\u0645\u0644 \u0627\u0644\u062c\u0648\u062f\u0629 (Q)<\/th><th>\u062a\u0631\u062f\u062f \u0627\u0644\u0631\u0646\u064a\u0646 \u0627\u0644\u0630\u0627\u062a\u064a (\u062c\u064a\u062c\u0627\u0647\u0631\u062a\u0632)<\/th><th>DC Resistance (m\u03a9)<\/th><\/tr><\/thead><tbody><tr><td>A001<\/td><td>56.2 \u00b10.3<\/td><td>42<\/td><td>3.5<\/td><td>18.7<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This guide complies with IEC 62391-1 standards. For automotive applications, additional AEC-Q200 85\u2103\/85%RH environmental testing is required. Always refer to the manufacturer&#8217;s specifications (e.g., Murata Measurement Manual) for device-specific requirements.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>\u0627\u0644\u062f\u0644\u064a\u0644 \u0627\u0644\u0643\u0627\u0645\u0644 \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0645\u062d\u062b\u0627\u062a SMD:\u064a\u062a\u0636\u0645\u0646 \u0625\u062c\u0631\u0627\u0621\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u062e\u0637\u0648\u0629 \u0628\u062e\u0637\u0648\u0629\u060c \u0648\u0646\u0635\u0627\u0626\u062d \u062d\u0648\u0644 \u0627\u0633\u062a\u0643\u0634\u0627\u0641 \u0627\u0644\u0623\u062e\u0637\u0627\u0621 \u0648\u0625\u0635\u0644\u0627\u062d\u0647\u0627 \u0644\u0644\u0645\u0634\u0627\u0643\u0644 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 (\u0639\u0627\u0645\u0644 \u0643\u064a\u0648\u060c \u0648\u0639\u0627\u0645\u0644 \u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0635\u0648\u062a\u064a\u0629 \u0627\u0644\u0642\u0635\u064a\u0631\u0629\u060c \u0648\u0645\u0634\u0627\u0643\u0644 \u0627\u0644\u062a\u0644\u0627\u0645\u0633)\u060c \u0648\u0637\u0631\u0642 \u0645\u062a\u0642\u062f\u0645\u0629 \u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0627\u0644\u062a\u062d\u064a\u0632 \u0644\u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629\/\u0627\u0644\u062a\u0631\u062f\u062f\u0627\u062a \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629.<\/p>","protected":false},"author":2,"featured_media":6698,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[138],"class_list":["post-6695","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-smd"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Test SMD Inductor? 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