{"id":1450,"date":"2025-04-14T14:20:00","date_gmt":"2025-04-14T06:20:00","guid":{"rendered":"https:\/\/topfastpcba.com\/?p=1450"},"modified":"2025-10-22T17:23:15","modified_gmt":"2025-10-22T09:23:15","slug":"circuit-board-resistors","status":"publish","type":"post","link":"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/","title":{"rendered":"R\u00e9sistances pour circuits imprim\u00e9s"},"content":{"rendered":"<p><strong>R\u00e9sistances<\/strong> (commun\u00e9ment appel\u00e9es simplement \"r\u00e9sistances\" dans l&amp;#8217usage quotidien) sont des composants qui limitent le courant. Lorsqu'elle est connect\u00e9e dans un circuit, une r\u00e9sistance a g\u00e9n\u00e9ralement une valeur de r\u00e9sistance fixe avec deux broches qui limitent le flux de courant dans la branche connect\u00e9e. Les r\u00e9sistances dont les valeurs de r\u00e9sistance sont immuables sont appel\u00e9es <strong>r\u00e9sistances fixes<\/strong>tandis que ceux dont la r\u00e9sistance est r\u00e9glable sont appel\u00e9s <strong>potentiom\u00e8tres<\/strong> or <strong>r\u00e9sistances variables<\/strong>. Une r\u00e9sistance id\u00e9ale est lin\u00e9aire, ce qui signifie que le courant instantan\u00e9 est directement proportionnel \u00e0 la tension instantan\u00e9e appliqu\u00e9e. Les r\u00e9sistances variables utilis\u00e9es pour la division de tension comportent un ou deux contacts m\u00e9talliques mobiles press\u00e9s contre un \u00e9l\u00e9ment r\u00e9sistif expos\u00e9, la position du contact d\u00e9terminant la r\u00e9sistance entre l'une ou l'autre extr\u00e9mit\u00e9 de l'\u00e9l\u00e9ment r\u00e9sistif et le contact.<\/p>\n\n\n\n<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\">Table des mati\u00e8res<\/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\/fr\/circuit-board-resistors\/#Working_Principle_of_PCB_Resistors\" >Principe de fonctionnement des r\u00e9sistances pour circuits imprim\u00e9s<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Resistor_Materials\" >Mat\u00e9riaux de r\u00e9sistance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Classification_by_Material\" >Classification par mat\u00e9riau<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Resistor_Markings\" >Marquage des r\u00e9sistances<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Resistance_Value_and_Tolerance_Marking_Methods\" >M\u00e9thodes de marquage des valeurs de r\u00e9sistance et des tol\u00e9rances<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#1_Direct_Marking_Method\" >1. M\u00e9thode de marquage direct<\/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\/fr\/circuit-board-resistors\/#2_Color_Coding_Method\" >2.M\u00e9thode de codage des couleurs<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#4-Band_Resistor_Identification\" >Identification des r\u00e9sistances \u00e0 4 bandes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#5-Band_Resistor_Identification\" >Identification des r\u00e9sistances \u00e0 5 bandes<\/a><\/li><\/ul><\/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\/fr\/circuit-board-resistors\/#How_to_Use_the_Tables\" >Comment utiliser les tableaux<\/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\/fr\/circuit-board-resistors\/#For_4-band_resistors\" >Pour les r\u00e9sistances \u00e0 4 bandes :<\/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\/fr\/circuit-board-resistors\/#For_5-band_resistors\" >Pour les r\u00e9sistances \u00e0 5 bandes :<\/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\/fr\/circuit-board-resistors\/#Tolerance_Definition\" >D\u00e9finition de la tol\u00e9rance<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Selection_of_PCB_Resistors\" >S\u00e9lection des r\u00e9sistances pour circuits imprim\u00e9s<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#1_Selection_of_Fixed_Resistors\" >1. S\u00e9lection des r\u00e9sistances fixes<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#2_Fusible_Resistors\" >2.R\u00e9sistances fusibles<\/a><\/li><\/ul><\/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\/fr\/circuit-board-resistors\/#Three_Fundamental_Selection_Principles\" >Trois principes fondamentaux de s\u00e9lection<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#Major_Resistor_Brands\" >Principales marques de r\u00e9sistances<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#PCB_Resistor_Soldering_Guidelines\" >Lignes directrices pour le soudage des r\u00e9sistances de circuits imprim\u00e9s<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#1_Temperature_Control\" >1. Contr\u00f4le de la temp\u00e9rature<\/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\/fr\/circuit-board-resistors\/#2_Soldering_Duration\" >2.Dur\u00e9e de la soudure<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#3_Placement\" >3.Placement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#4_Soldering_Methods\" >4.M\u00e9thodes de soudage<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/#5_Additional_Checks\" >5.Contr\u00f4les suppl\u00e9mentaires<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Working_Principle_of_PCB_Resistors\"><\/span><strong>Principe de fonctionnement des r\u00e9sistances pour circuits imprim\u00e9s<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Les r\u00e9sistances des cartes de circuits imprim\u00e9s fonctionnent en emp\u00eachant le flux de courant \u00e0 travers leur mat\u00e9riau r\u00e9sistif interne, limitant ainsi le courant.Leur fonctionnement est bas\u00e9 sur <strong>Loi d&amp;#8217Ohm<\/strong>: V = I \u00d7 R, where V is voltage, I is current, and R is resistance. A resistor&#8217;s fixed value is typically connected to the circuit through two pins to regulate current flow. The resistance value depends on factors including temperature, material, length, and cross-sectional area. The <strong>coefficient de temp\u00e9rature<\/strong> quantifies resistance variation per 1\u00b0C temperature change, expressed as a percentage. A key characteristic of resistors is their ability to convert electrical energy into heat, making them energy-dissipating components. In circuits, resistors primarily serve voltage division and current splitting functions and can work with both AC and DC signals.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resistor_Materials\"><\/span><strong>Mat\u00e9riaux de r\u00e9sistance<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Les r\u00e9sistances sont principalement fabriqu\u00e9es \u00e0 partir de mat\u00e9riaux r\u00e9sistifs, les types les plus courants \u00e9tant le film de carbone, le film m\u00e9tallique, la composition solide et le fil enroul\u00e9. Les diff\u00e9rentes propri\u00e9t\u00e9s de ces mat\u00e9riaux d\u00e9terminent les performances et les applications des r\u00e9sistances. Par exemple :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>R\u00e9sistances \u00e0 film de carbone<\/strong> sont largement utilis\u00e9s en raison de leur faible co\u00fbt et de leur bonne stabilit\u00e9<\/li>\n\n\n\n<li><strong>R\u00e9sistances \u00e0 film m\u00e9tallique<\/strong> sont pr\u00e9f\u00e9r\u00e9s dans les circuits \u00e0 haute performance pour leur stabilit\u00e9 sup\u00e9rieure et leurs caract\u00e9ristiques de faible bruit<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Classification_by_Material\"><\/span><strong>Classification par mat\u00e9riau<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>R\u00e9sistances bobin\u00e9es<\/strong>: Fabriqu\u00e9 en enroulant un fil d'alliage \u00e0 haute r\u00e9sistance autour d'un noyau isolant, recouvert d'un gla\u00e7age r\u00e9sistant \u00e0 la chaleur ou d'une peinture isolante. Il se caract\u00e9rise par un coefficient de basse temp\u00e9rature, une grande pr\u00e9cision, une bonne stabilit\u00e9 et une r\u00e9sistance \u00e0 la chaleur et \u00e0 la corrosion. Principalement utilis\u00e9 pour les applications de pr\u00e9cision \u00e0 haute puissance, bien que les performances \u00e0 haute fr\u00e9quence soient m\u00e9diocres et la constante de temps \u00e9lev\u00e9e.<\/li>\n\n\n\n<li><strong>R\u00e9sistances en carbone<\/strong>: Form\u00e9 par la compression de carbone et de plastique synth\u00e9tique.<\/li>\n\n\n\n<li><strong>R\u00e9sistances \u00e0 film de carbone<\/strong>Cr\u00e9\u00e9es par d\u00e9p\u00f4t de carbone cristallin sur des barres de c\u00e9ramique. Elles offrent un faible co\u00fbt, des performances stables, une large plage de r\u00e9sistance et de faibles coefficients de temp\u00e9rature et de tension, ce qui en fait le type de r\u00e9sistance le plus utilis\u00e9.<\/li>\n\n\n\n<li><strong>R\u00e9sistances \u00e0 film m\u00e9tallique<\/strong>Produites par d\u00e9p\u00f4t sous vide de mat\u00e9riaux d'alliage sur des tiges de c\u00e9ramique.Elles offrent une plus grande pr\u00e9cision, une meilleure stabilit\u00e9, un bruit plus faible et des coefficients de temp\u00e9rature plus bas que les r\u00e9sistances \u00e0 film de carbone, ce qui les rend courantes dans les \u00e9quipements d'instrumentation et de communication.<\/li>\n\n\n\n<li><strong>R\u00e9sistances \u00e0 film d'oxyde m\u00e9tallique<\/strong>: Form\u00e9s par d\u00e9p\u00f4t d'oxydes m\u00e9talliques (comme l'oxyde d'\u00e9tain) sur des barres isolantes. \u00c9tant eux-m\u00eames des oxydes, ils offrent une excellente stabilit\u00e9 \u00e0 haute temp\u00e9rature, une r\u00e9sistance aux chocs thermiques et une forte capacit\u00e9 de charge.<\/li>\n<\/ol>\n\n\n\n<p>Par application, les r\u00e9sistances peuvent \u00eatre class\u00e9es dans les cat\u00e9gories suivantes : usage g\u00e9n\u00e9ral, pr\u00e9cision, haute fr\u00e9quence, haute tension, haute r\u00e9sistance, haute puissance et r\u00e9seaux de r\u00e9sistances.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"780\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Resistor-Symbols.jpg\" alt=\"\" class=\"wp-image-1451\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Resistor-Symbols.jpg 850w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Resistor-Symbols-300x275.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Resistor-Symbols-768x705.jpg 768w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Resistor-Symbols-150x138.jpg 150w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resistor_Markings\"><\/span><strong>Marquage des r\u00e9sistances<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>The nominal resistance value is marked on resistors using numbers or color codes, with units of ohms (\u03a9), kilohms (k\u03a9), megohms (M\u03a9), or teraohms (T\u03a9). Resistance values follow standardized preferred number series corresponding to tolerance ratings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resistance_Value_and_Tolerance_Marking_Methods\"><\/span><strong>M\u00e9thodes de marquage des valeurs de r\u00e9sistance et des tol\u00e9rances<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Il existe trois m\u00e9thodes principales de marquage :<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Marquage direct<\/li>\n\n\n\n<li>Code couleur<\/li>\n\n\n\n<li>Codage des symboles alphanum\u00e9riques<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Direct_Marking_Method\"><\/span>1. M\u00e9thode de marquage direct<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Exemple de marquage<\/th><th>Valeur de la r\u00e9sistance<\/th><th>Tol\u00e9rance<\/th><\/tr><\/thead><tbody><tr><td>3\u03a93 \u2160<\/td><td>3.3 \u03a9<\/td><td>\u00b15%<\/td><\/tr><tr><td>1K8<\/td><td>1.8 k\u03a9<\/td><td>\u00b120%<\/td><\/tr><tr><td>5M1 \u2161<\/td><td>5.1 M\u03a9<\/td><td>\u00b110%<\/td><\/tr><tr><td><em>Note: Unmarked resistors default to \u00b120% tolerance<\/em><\/td><td><\/td><td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Color_Coding_Method\"><\/span>2.M\u00e9thode de codage des couleurs<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4-Band_Resistor_Identification\"><\/span>Identification des r\u00e9sistances \u00e0 4 bandes<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Couleur<\/th><th>1er chiffre<\/th><th>2\u00e8me chiffre<\/th><th>Multiplicateur<\/th><th>Tol\u00e9rance<\/th><\/tr><\/thead><tbody><tr><td>Noir<\/td><td>0<\/td><td>0<\/td><td>10\u2070<\/td><td>\u2014<\/td><\/tr><tr><td>Marron<\/td><td>1<\/td><td>1<\/td><td>10\u00b9<\/td><td>\u2014<\/td><\/tr><tr><td>Red<\/td><td>2<\/td><td>2<\/td><td>10\u00b2<\/td><td>\u2014<\/td><\/tr><tr><td>Orange<\/td><td>3<\/td><td>3<\/td><td>10\u00b3<\/td><td>\u2014<\/td><\/tr><tr><td>Jaune<\/td><td>4<\/td><td>4<\/td><td>10\u2074<\/td><td>\u2014<\/td><\/tr><tr><td>Vert<\/td><td>5<\/td><td>5<\/td><td>10\u2075<\/td><td>\u2014<\/td><\/tr><tr><td>Bleu<\/td><td>6<\/td><td>6<\/td><td>10\u2076<\/td><td>\u2014<\/td><\/tr><tr><td>Violet<\/td><td>7<\/td><td>7<\/td><td>10\u2077<\/td><td>\u2014<\/td><\/tr><tr><td>Gris<\/td><td>8<\/td><td>8<\/td><td>10\u2078<\/td><td>\u2014<\/td><\/tr><tr><td>Blanc<\/td><td>9<\/td><td>9<\/td><td>10\u2079<\/td><td>\u2014<\/td><\/tr><tr><td>L'or<\/td><td>\u2014<\/td><td>\u2014<\/td><td>10\u207b\u00b9<\/td><td>\u00b15%<\/td><\/tr><tr><td>Argent<\/td><td>\u2014<\/td><td>\u2014<\/td><td>10\u207b\u00b2<\/td><td>\u00b110%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5-Band_Resistor_Identification\"><\/span>Identification des r\u00e9sistances \u00e0 5 bandes<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Couleur<\/th><th>1er chiffre<\/th><th>2\u00e8me chiffre<\/th><th>3\u00e8me chiffre<\/th><th>Multiplicateur<\/th><th>Tol\u00e9rance<\/th><\/tr><\/thead><tbody><tr><td>Noir<\/td><td>0<\/td><td>0<\/td><td>0<\/td><td>10\u2070<\/td><td>\u2014<\/td><\/tr><tr><td>Marron<\/td><td>1<\/td><td>1<\/td><td>1<\/td><td>10\u00b9<\/td><td>\u00b11%<\/td><\/tr><tr><td>Red<\/td><td>2<\/td><td>2<\/td><td>2<\/td><td>10\u00b2<\/td><td>\u00b12%<\/td><\/tr><tr><td>Orange<\/td><td>3<\/td><td>3<\/td><td>3<\/td><td>10\u00b3<\/td><td>\u2014<\/td><\/tr><tr><td>Jaune<\/td><td>4<\/td><td>4<\/td><td>4<\/td><td>10\u2074<\/td><td>\u2014<\/td><\/tr><tr><td>Vert<\/td><td>5<\/td><td>5<\/td><td>5<\/td><td>10\u2075<\/td><td>\u00b10.5%<\/td><\/tr><tr><td>Bleu<\/td><td>6<\/td><td>6<\/td><td>6<\/td><td>10\u2076<\/td><td>\u00b10.25%<\/td><\/tr><tr><td>Violet<\/td><td>7<\/td><td>7<\/td><td>7<\/td><td>10\u2077<\/td><td>\u00b10.1%<\/td><\/tr><tr><td>Gris<\/td><td>8<\/td><td>8<\/td><td>8<\/td><td>10\u2078<\/td><td>\u00b10.05%<\/td><\/tr><tr><td>Blanc<\/td><td>9<\/td><td>9<\/td><td>9<\/td><td>10\u2079<\/td><td>\u2014<\/td><\/tr><tr><td>L'or<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>10\u207b\u00b9<\/td><td>\u00b15%<\/td><\/tr><tr><td>Argent<\/td><td>\u2014<\/td><td>\u2014<\/td><td>\u2014<\/td><td>10\u207b\u00b2<\/td><td>\u00b110%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Use_the_Tables\"><\/span>Comment utiliser les tableaux<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"858\" height=\"504\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors.jpg\" alt=\"\" class=\"wp-image-1452\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors.jpg 858w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors-300x176.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors-768x451.jpg 768w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors-390x228.jpg 390w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/5-Color-Ring-Resistors-150x88.jpg 150w\" sizes=\"auto, (max-width: 858px) 100vw, 858px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"For_4-band_resistors\"><\/span>Pour les r\u00e9sistances \u00e0 4 bandes :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>1\u00e8re bande (chiffre des dizaines)<\/strong>: Couleur = Rouge (2)<\/li>\n\n\n\n<li><strong>2\u00e8me bande (chiffre des unit\u00e9s)<\/strong>: Couleur = Orange (3)<\/li>\n\n\n\n<li><strong>Multiplicateur<\/strong>: Color = Black (10\u2070)<\/li>\n\n\n\n<li><strong>Tol\u00e9rance<\/strong>: Color = Gold (\u00b15%)<br><strong>Exemple<\/strong>:<br>Red-Orange-Black-Gold = 23 \u00d7 10\u2070 = <strong>23\u03a9 (\u00b15%)<\/strong><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"For_5-band_resistors\"><\/span>Pour les r\u00e9sistances \u00e0 5 bandes :<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>1\u00e8re bande (chiffre des centaines)<\/strong>: Couleur = Rouge (2)<\/li>\n\n\n\n<li><strong>2\u00e8me bande (chiffre des dizaines)<\/strong>: Couleur = Bleu (6)<\/li>\n\n\n\n<li><strong>3\u00e8me bande (chiffre des unit\u00e9s)<\/strong>: Couleur = Vert (5)<\/li>\n\n\n\n<li><strong>Multiplicateur<\/strong>: Color = Black (10\u2070)<\/li>\n\n\n\n<li><strong>Tol\u00e9rance<\/strong>: Color = Brown (\u00b11%)<br><strong>Exemple<\/strong>:<br>Red-Blue-Green-Black-Brown = 265 \u00d7 10\u2070 = <strong>265\u03a9 (\u00b11%)<\/strong><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tolerance_Definition\"><\/span>D\u00e9finition de la tol\u00e9rance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>La tol\u00e9rance repr\u00e9sente la <strong>\u00e9cart maximal admissible<\/strong> entre la valeur r\u00e9elle de la r\u00e9sistance et la valeur nominale, exprim\u00e9e en pourcentage. Les degr\u00e9s de tol\u00e9rance les plus courants sont les suivants :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Standard: \u00b15%, \u00b110%, \u00b120%<\/li>\n\n\n\n<li>Precision: &lt;\u00b11%<\/li>\n\n\n\n<li>High-precision: Up to \u00b10.001%<\/li>\n<\/ul>\n\n\n\n<p><strong>Note<\/strong>: La pr\u00e9cision est d\u00e9termin\u00e9e \u00e0 la fois par la tol\u00e9rance et par les variations irr\u00e9versibles de la r\u00e9sistance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Selection_of_PCB_Resistors\"><\/span>S\u00e9lection des r\u00e9sistances pour circuits imprim\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Selection_of_Fixed_Resistors\"><\/span>1. S\u00e9lection des r\u00e9sistances fixes<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Le choix du mat\u00e9riau et de la construction de la r\u00e9sistance doit \u00eatre bas\u00e9 sur les exigences sp\u00e9cifiques du circuit d'application :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Circuits haute fr\u00e9quence<\/strong>: Utilisez des r\u00e9sistances non bobin\u00e9es \u00e0 faible inductance et capacit\u00e9 distribu\u00e9es, telles que <strong>r\u00e9sistances \u00e0 couche de carbone, \u00e0 couche m\u00e9tallique, \u00e0 couche d'oxyde m\u00e9tallique, \u00e0 couche mince, \u00e0 couche \u00e9paisse, \u00e0 alliage ou \u00e0 rev\u00eatement anticorrosion<\/strong>.<\/li>\n\n\n\n<li><strong>Amplificateurs \u00e0 petit signal \u00e0 gain \u00e9lev\u00e9<\/strong>: Optez pour <strong>r\u00e9sistances \u00e0 faible bruit<\/strong> (par exemple, les r\u00e9sistances \u00e0 film m\u00e9tallique, \u00e0 film de carbone ou \u00e0 fil enroul\u00e9). \u00c9viter <strong>R\u00e9sistances solides organiques et \u00e0 composition de carbone<\/strong>qui pr\u00e9sentent un niveau de bruit plus \u00e9lev\u00e9.<\/li>\n<\/ul>\n\n\n\n<p><strong>Consid\u00e9rations cl\u00e9s :<\/strong><br>\u2714 Select standard-series resistors with values closest to the calculated circuit requirement.<br>\u2714 General circuits: <strong>\u00b15% to \u00b110% tolerance<\/strong> est acceptable.<br>\u2714 Precision instruments\/special circuits: Use <strong>r\u00e9sistances de haute pr\u00e9cision<\/strong> (par exemple, 0,01 %, 0,1 % ou 0,5 % de tol\u00e9rance, telle que <em>R\u00e9sistances Jebsen<\/em>).<br>\u2714 <strong>Puissance<\/strong> must match circuit demands\u2014avoid arbitrarily increasing\/decreasing wattage.<br>\u2714 For power resistors: Choose a rating <strong>1\u20132\u00d7 higher<\/strong> que l'exigence r\u00e9elle du circuit.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Fusible_Resistors\"><\/span>2.R\u00e9sistances fusibles<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>Ces derniers fonctionnent comme <strong>composants de protection<\/strong>. La s\u00e9lection n\u00e9cessite un \u00e9quilibre :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Fonctionnement normal<\/strong>: Performance stable dans les conditions nominales.<\/li>\n\n\n\n<li><strong>Sc\u00e9narios de surcharge<\/strong>: Fusible rapide pour prot\u00e9ger le circuit.<br>\u26a0 <em>Une r\u00e9sistance\/puissance inad\u00e9quate compromet la protection.<\/em><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Three_Fundamental_Selection_Principles\"><\/span><strong>Trois principes fondamentaux de s\u00e9lection<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Fabrication certifi\u00e9e<\/strong>: Choisissez des r\u00e9sistances produites selon des processus certifi\u00e9s de haut niveau.<\/li>\n\n\n\n<li><strong>\u00c9valuation des fournisseurs<\/strong>: Donner la priorit\u00e9 aux fabricants ayant <strong>la sup\u00e9riorit\u00e9 technique, l'assurance de la qualit\u00e9, la rentabilit\u00e9 et un soutien fiable<\/strong>.<\/li>\n\n\n\n<li><strong>Approvisionnement direct<\/strong>: S'approvisionner aupr\u00e8s de fournisseurs agr\u00e9\u00e9s dont les catalogues de produits ont \u00e9t\u00e9 v\u00e9rifi\u00e9s.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Major_Resistor_Brands\"><\/span><strong>Principales marques de r\u00e9sistances<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>R\u00e9gion<\/th><th>Fabricants<\/th><\/tr><\/thead><tbody><tr><td><strong>\u00c9tats-Unis\/UE\/Japon<\/strong><\/td><td>Vishay, TE Connectivity, TT Electronics, Bourns, KOA<\/td><\/tr><tr><td><strong>Ta\u00efwan\/Chine<\/strong><\/td><td>Yageo, Ralec, Uniohm, LIZ, TA-I, Walsin, Viking Tech, HKR, PAK HENG, TOKEN<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"655\" src=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors-1024x655.jpg\" alt=\"\" class=\"wp-image-1453\" srcset=\"https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors-1024x655.jpg 1024w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors-300x192.jpg 300w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors-768x491.jpg 768w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors-150x96.jpg 150w, https:\/\/topfastpcba.com\/wp-content\/uploads\/2025\/04\/Fixed-Resistors.jpg 1116w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"PCB_Resistor_Soldering_Guidelines\"><\/span><strong>Lignes directrices pour le soudage des r\u00e9sistances de circuits imprim\u00e9s<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Temperature_Control\"><\/span>1. <strong>Contr\u00f4le de la temp\u00e9rature<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ajuster en fonction de la r\u00e9sistance <strong>le mat\u00e9riau, la taille et la m\u00e9thode de soudage<\/strong>.<\/li>\n\n\n\n<li><strong>Trop \u00e9lev\u00e9<\/strong>: Risque d'endommagement des composants.<\/li>\n\n\n\n<li><strong>Trop faible<\/strong>: Faiblesse des joints de soudure.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Soldering_Duration\"><\/span>2. <strong>Dur\u00e9e de la soudure<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Temps excessif<\/strong>: D\u00e9grade les performances de la r\u00e9sistance.<\/li>\n\n\n\n<li><strong>Temps insuffisant<\/strong>: Mauvaise adh\u00e9rence.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Placement\"><\/span>3. <strong>Placement<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Monter sur le <strong>PCB\u2019s top layer<\/strong> (\u00e9viter le placement sur la face inf\u00e9rieure).<\/li>\n\n\n\n<li>R\u00e9duire au minimum la proximit\u00e9 avec d'autres composants pour \u00e9viter les interf\u00e9rences.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Soldering_Methods\"><\/span>4. <strong>M\u00e9thodes de soudage<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Soudure \u00e0 la main<\/strong>: Prototypage de faible volume.<\/li>\n\n\n\n<li><strong>Soudure \u00e0 la machine<\/strong>: Production de masse.<\/li>\n\n\n\n<li>Tous deux n\u00e9cessitent un contr\u00f4le strict des <strong>la temp\u00e9rature, le temps et le positionnement<\/strong>.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Additional_Checks\"><\/span>5. <strong>Contr\u00f4les suppl\u00e9mentaires<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p>\u2714 Verify resistor <strong>les sp\u00e9cifications correspondent aux param\u00e8tres de conception du circuit imprim\u00e9<\/strong>.<br>\u2714 <strong>Pr\u00e9-nettoyage des PCB<\/strong> pour \u00e9liminer les contaminants.<br>\u2714 <strong>Inspection apr\u00e8s soudage<\/strong>: Assurer la stabilit\u00e9 m\u00e9canique.<\/p>\n\n\n\n<p><strong>R\u00e9sum\u00e9<\/strong>Le soudage correct des r\u00e9sistances est essentiel pour la fiabilit\u00e9 des circuits imprim\u00e9s. La ma\u00eetrise de ces techniques garantit des performances optimales des circuits.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Les r\u00e9sistances (commun\u00e9ment appel\u00e9es simplement \"r\u00e9sistances\" dans l&amp;#8217usage quotidien) sont des composants qui limitent le courant. Lorsqu'elle est connect\u00e9e dans un circuit, une r\u00e9sistance a g\u00e9n\u00e9ralement une valeur de r\u00e9sistance fixe avec deux broches qui limitent le flux de courant dans la branche connect\u00e9e.<\/p>","protected":false},"author":2,"featured_media":1457,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[147],"class_list":["post-1450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry","tag-resistor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Circuit Board Resistors - Topfastpcba<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/topfastpcba.com\/fr\/circuit-board-resistors\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Circuit Board Resistors - Topfastpcba\" \/>\n<meta property=\"og:description\" content=\"Resistors (commonly referred to simply as &quot;resistors&quot; in daily usage) are current-limiting components. 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