{"id":17932,"date":"2025-08-01T15:44:57","date_gmt":"2025-08-01T07:44:57","guid":{"rendered":"https:\/\/demo.maxmega.com\/?post_type=product&#038;p=17932"},"modified":"2025-08-01T16:34:29","modified_gmt":"2025-08-01T08:34:29","slug":"resi-current-sensing-resistor","status":"publish","type":"product","link":"https:\/\/demo.maxmega.com\/ch\/product\/resi-current-sensing-resistor","title":{"rendered":"RESI &#8211; Current Sensing Resistor"},"content":{"rendered":"<table style=\"width: 100%; margin-bottom: 30px;\">\n<tbody>\n<tr>\n<td style=\"width: 300px; vertical-align: top; text-align: center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/CURRENT-SENSING-RESISTOR.jpg\" alt=\"Precision Resistor\" width=\"300\" height=\"222\" \/><\/td>\n<td style=\"vertical-align: top;\">\n<h3 style=\"margin-bottom: 10px;\">Description<\/h3>\n<p style=\"text-align: justify; color: black;\">The Current Sensing Resistors are used to measure the current in the circuit. By measuring the voltage drop generated when the current flowing through the resistor and known resistance, current can be calculated by Ohm&#8217;s Law (I = U \/ R). Generally, the resistance of current sensing resistor is very small, between 1m \u03a9 and 1 \u03a9, with tight tolerance and low TCR. In applications which ask for precision measurement, the resistance of terminal and the contact resistance may be higher than the nominal value of current sensing resistor itself. Therefore, if two-terminal resistors are used, the error caused by terminals may be serious. In order to eliminate the influence of voltage drop caused by terminals (not resistive element) and obtain extremely accurate current value, four-terminal Kelvin structure resistor is recommended.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table style=\"width: 100%; margin-top: 30px;\">\n<tbody>\n<tr>\n<td style=\"width: 50%;\" valign=\"top\">\n<h4 style=\"margin-bottom: 10px;\">Features<\/h4>\n<ul style=\"margin-top: 0; color: black;\">\n<li>Low Resistance<\/li>\n<li>Four Terminal Design<\/li>\n<li>Low TCR<\/li>\n<li>Low Thermal EMF<\/li>\n<li>Excellent Stability<\/li>\n<\/ul>\n<\/td>\n<td style=\"width: 50%;\" valign=\"top\">\n<h4 style=\"margin-bottom: 10px;\">Applications<\/h4>\n<ul style=\"margin-top: 0; color: black;\">\n<li>Electric Power<\/li>\n<li>Precision Measurement<\/li>\n<li>Current Sensing<\/li>\n<li>Automotive<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<style>\n.table-custom {\n  width: 100%;\n  border-collapse: collapse;\n}\n.table-custom th,\n.table-custom td {\n  border: 1px solid #ccc;\n  padding: 10px;\n  text-align: center;\n  vertical-align: middle;\n  color: black;\n}\n.table-custom th {\n  background-color: grey;\n  color: white;\n}\n.table-custom td.description {\n  text-align: left;\n}\n<\/style>\n<table class=\"table-custom\">\n<thead>\n<tr>\n<th>Series<\/th>\n<th>Image<\/th>\n<th>Description<\/th>\n<th>Resistance Range<\/th>\n<th style=\"white-space: nowrap; width: 1%;\">Size<\/th>\n<th style=\"white-space: nowrap; width: 1%;\">Rated Power<\/th>\n<th>Tolerance<\/th>\n<th>TCR<\/th>\n<th>Technology<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PCSR2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PCSR2512.jpg\" alt=\"PCSR2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Low TCR, tight tolerance and high stability molded alloy current sensing resistor<\/td>\n<td>5m\u03a9-100m\u03a9<\/td>\n<td>2512<\/td>\n<td>1W<\/td>\n<td>\u00b10.1%<\/td>\n<td>\u00b115ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>EBWM2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/EBWM2512.jpg\" alt=\"EBWM2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Economical electron beam welding alloy current sensing resistor, case code 2512<\/td>\n<td>0.3m\u03a9-1m\u03a9<\/td>\n<td>2512<\/td>\n<td>6W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b1200ppm<\/td>\n<td>Mn-Cu Alloy<\/td>\n<\/tr>\n<tr>\n<td>SEWF2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/SEWF2512.jpg\" alt=\"SEWF2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Low-TCR &#038; tight-tolerance alloy current sensing resistor, for DC measuring<\/td>\n<td>3m\u03a9<\/td>\n<td>2512<\/td>\n<td>4W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWM3920<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWM3920.png\" alt=\"PEWM3920\" width=\"80\" \/><\/td>\n<td class=\"description\">Low TCR, tight tolerance and high stability alloy current sensing resistor<\/td>\n<td>0.3m\u03a9-1m\u03a9<\/td>\n<td>3920<\/td>\n<td>8W-10W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b1100ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWK3920<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWK3920.jpg\" alt=\"PEWK3920\" width=\"80\" \/><\/td>\n<td class=\"description\">Low TCR, tight tolerance and high stability alloy current sensing resistor<\/td>\n<td>2m\u03a9-5m\u03a9<\/td>\n<td>3920<\/td>\n<td>3W-6W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>EBWK2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/EBWK2512.jpg\" alt=\"EBWK2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Economical Kama alloy current sensing resistor, case code 2512, 100ppm<\/td>\n<td>2m\u03a9-5m\u03a9<\/td>\n<td>2512<\/td>\n<td>2.5W-5W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b1100ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>SEWF3920<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/SEWF3920.jpg\" alt=\"SEWF3920\" width=\"80\" \/><\/td>\n<td class=\"description\">Low-TCR &#038; tight-tolerance alloy current sensing resistor, for DC measuring<\/td>\n<td>1m\u03a9-5m\u03a9<\/td>\n<td>3920<\/td>\n<td>3W-8W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWF2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWF2512.jpg\" alt=\"PEWF2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Alloy current sensing resistor by Trimming Free technology, size 2512, tightest tolerance 0.5%, 50ppm<\/td>\n<td>2m\u03a9-5m\u03a9<\/td>\n<td>2512<\/td>\n<td>2.5W-5W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>SEWF5930<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/SEWF5930.png\" alt=\"SEWF5930\" width=\"80\" \/><\/td>\n<td class=\"description\">Low-TCR &#038; tight-tolerance alloy current sensing resistor, for DC measuring<\/td>\n<td>1m\u03a9-3m\u03a9<\/td>\n<td>5930<\/td>\n<td>6W-10W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PCSK2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PCSK2512.jpg\" alt=\"PCSK2512\" width=\"80\" \/><\/td>\n<td class=\"description\">Low TCR, tight tolerance and high stability molded alloy current sensing resistor<\/td>\n<td>5m\u03a9-100m\u03a9<\/td>\n<td>2512<\/td>\n<td>1W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWM5930<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWM5930.jpg\" alt=\"PEWM5930\" width=\"80\" \/><\/td>\n<td class=\"description\">Low-TCR &#038; tight-tolerance alloy current sensing resistor, for DC measuring<\/td>\n<td>0.2m\u03a9-1m\u03a9<\/td>\n<td>5930<\/td>\n<td>7W-15W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b1100ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>EOAR<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/EOAR.jpg\" alt=\"EOAR\" width=\"80\" \/><\/td>\n<td class=\"description\">Trimming Free Technology. Low TCR. Tight-Tolerance Alloy Current Sensing Resistor<\/td>\n<td>25m\u03a9<\/td>\n<td>4725<\/td>\n<td>5W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b140ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>SEWF3951<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/SEWF3951.jpg\" alt=\"SEWF3951\" width=\"80\" \/><\/td>\n<td class=\"description\">Low-TCR &#038; tight-tolerance alloy current sensing resistor, for DC measuring<\/td>\n<td>0.25m\u03a9-0.8m\u03a9<\/td>\n<td>3951<\/td>\n<td>10W-15W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>MFCR<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/MFCR.png\" alt=\"MFCR\" width=\"80\" \/><\/td>\n<td class=\"description\">The precision SMD current sensing resistors use special thin film technology, which offer two options, short side and long side terminals, and comply with AEC-Q200 certification.<\/td>\n<td>10m\u03a9-10\u03a9<\/td>\n<td>0201-2512<\/td>\n<td>0.2W-3W<\/td>\n<td>\u00b10.25%<\/td>\n<td>\u00b150ppm-\u00b1150ppm<\/td>\n<td>Thin Film<\/td>\n<\/tr>\n<tr>\n<td>PEWK5930<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWK5930.jpg\" alt=\"PEWK5930\" width=\"80\" \/><\/td>\n<td class=\"description\">Low TCR, tight tolerance and high stability alloy current sensing resistor<\/td>\n<td>1m\u03a9<\/td>\n<td>5930<\/td>\n<td>10W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWF2726<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWF2726.jpg\" alt=\"PEWF2726\" width=\"80\" \/><\/td>\n<td class=\"description\">2726 size, 4-terminal construction, Low-TCR &#038; tight-tolerance alloy current sensing resistor, based on Trimming-Free technology<\/td>\n<td>1m\u03a9-5m\u03a9<\/td>\n<td>2726<\/td>\n<td>3W-7W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm-\u00b175ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>PEWF4026<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/PEWF4026.jpg\" alt=\"PEWF4026\" width=\"80\" \/><\/td>\n<td class=\"description\">4026 size, 4-terminal construction, Low-TCR &#038; tight-tolerance alloy current sensing resistor, based on Trimming-Free technology<\/td>\n<td>1m\u03a9-5m\u03a9<\/td>\n<td>4026<\/td>\n<td>3W-7W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm-\u00b175ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>SEWK3951<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/SEWK3951.jpg\" alt=\"SEWK3951\" width=\"80\" \/><\/td>\n<td class=\"description\">High power, low TCR and tight tolerance alloy current sensing resistor<\/td>\n<td>0.25m\u03a9-0.4m\u03a9<\/td>\n<td>3951<\/td>\n<td>15W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b125ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<tr>\n<td>MCSF2512<\/td>\n<td><img decoding=\"async\" src=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/MCSF2512.jpg\" alt=\"MCSF2512\" width=\"80\" \/><\/td>\n<td class=\"description\">High-Precision Low-TCR Molded Alloy Current Sensing Resistor<\/td>\n<td>3m\u03a9~100m\u03a9<\/td>\n<td>2512<\/td>\n<td>2-3W<\/td>\n<td>\u00b10.5%<\/td>\n<td>\u00b150ppm<\/td>\n<td>Alloy<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>Description The Current Sensing Resistors are used to measure the current in the circuit. By measuring the voltage drop generated when the current flowing through the resistor and known resistance, current can be calculated by Ohm&#8217;s Law (I = U \/ R). Generally, the resistance of current sensing resistor is very small, between 1m \u03a9&hellip; <br \/> <a class=\"read-more\" href=\"https:\/\/demo.maxmega.com\/ch\/product\/resi-current-sensing-resistor\">Read more<\/a><\/p>","protected":false},"featured_media":17933,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_cat":[27],"product_tag":[],"class_list":["post-17932","product","type-product","status-publish","has-post-thumbnail","hentry","pwb-brand-resi","product_cat-resistors-and-potentiometers"],"brands":[{"id":439,"name":"RESI","slug":"resi"}],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>RESI - Current Sensing Resistor - Maxmega<\/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:\/\/demo.maxmega.com\/ch\/product\/resi-current-sensing-resistor\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RESI - Current Sensing Resistor - Maxmega\" \/>\n<meta property=\"og:description\" content=\"Description The Current Sensing Resistors are used to measure the current in the circuit. By measuring the voltage drop generated when the current flowing through the resistor and known resistance, current can be calculated by Ohm&#8217;s Law (I = U \/ R). Generally, the resistance of current sensing resistor is very small, between 1m \u03a9&hellip; Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/demo.maxmega.com\/ch\/product\/resi-current-sensing-resistor\/\" \/>\n<meta property=\"og:site_name\" content=\"Maxmega\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-01T08:34:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/CURRENT-SENSING-RESISTOR.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"650\" \/>\n\t<meta property=\"og:image:height\" content=\"480\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\">\n\t<meta name=\"twitter:data1\" content=\"3 \u5206\">\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/demo.maxmega.com\/en\/#website\",\"url\":\"https:\/\/demo.maxmega.com\/en\/\",\"name\":\"Maxmega\",\"description\":\"Electronics Pte Ltd\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":\"https:\/\/demo.maxmega.com\/en\/?s={search_term_string}\",\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/demo.maxmega.com\/product\/resi-current-sensing-resistor#primaryimage\",\"inLanguage\":\"zh-Hans\",\"url\":\"https:\/\/demo.maxmega.com\/wp-content\/uploads\/2025\/08\/CURRENT-SENSING-RESISTOR.jpg\",\"width\":650,\"height\":480},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/demo.maxmega.com\/product\/resi-current-sensing-resistor#webpage\",\"url\":\"https:\/\/demo.maxmega.com\/product\/resi-current-sensing-resistor\",\"name\":\"RESI - Current Sensing Resistor - Maxmega\",\"isPartOf\":{\"@id\":\"https:\/\/demo.maxmega.com\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/demo.maxmega.com\/product\/resi-current-sensing-resistor#primaryimage\"},\"datePublished\":\"2025-08-01T07:44:57+00:00\",\"dateModified\":\"2025-08-01T08:34:29+00:00\",\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/demo.maxmega.com\/product\/resi-current-sensing-resistor\"]}]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","_links":{"self":[{"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/product\/17932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/comments?post=17932"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/media\/17933"}],"wp:attachment":[{"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/media?parent=17932"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/product_cat?post=17932"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/demo.maxmega.com\/ch\/wp-json\/wp\/v2\/product_tag?post=17932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}