{"id":10415,"date":"2026-07-19T13:08:19","date_gmt":"2026-07-19T13:08:19","guid":{"rendered":"https:\/\/materialparts.com\/cmf0402-50k5-0-1-25ppm-k\/"},"modified":"2026-07-19T13:08:19","modified_gmt":"2026-07-19T13:08:19","slug":"cmf0402-50k5-0-1-25ppm-k","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/cmf0402-50k5-0-1-25ppm-k\/","title":{"rendered":"CMF0402 50K5 0.1% 25PPM\/K"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The CMF0402 50K5 0.1% 25PPM\/K is a precision thin film chip resistor in an 0402 (1005 metric) package with a resistance of 50.5kOhm, a tight tolerance of +\/-0.1%, and a low temperature coefficient of resistance (TCR) of +\/-25 ppm\/\u00b0C. Designed for high-precision analog and measurement applications, it provides excellent long-term stability and low noise characteristics. The device operates over the ambient temperature range of -55\u00b0C to +155\u00b0C with a rated power dissipation of 1\/16W at 70\u00b0C.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Resistance<\/td>\n50.5 kOhm<\/td>\n<\/tr>\n
Tolerance<\/td>\n+\/-0.1%<\/td>\n<\/tr>\n
TCR<\/td>\n+\/-25 ppm\/\u00b0C<\/td>\n<\/tr>\n
Rated Power<\/td>\n1\/16W (62.5mW) at 70\u00b0C<\/td>\n<\/tr>\n
Maximum Working Voltage<\/td>\n50V<\/td>\n<\/tr>\n
Package Size<\/td>\n0402 (1.0 x 0.5 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +155\u00b0C<\/td>\n<\/tr>\n
Technology<\/td>\nThin film (NiCr alloy)<\/td>\n<\/tr>\n
Stability<\/td>\nClass 0.1% per 1000h at 70\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • +\/-0.1% tight resistance tolerance for precision circuits<\/li>\n
  • +\/-25 ppm\/\u00b0C low temperature coefficient<\/li>\n
  • Thin film NiCr alloy for excellent stability<\/li>\n
  • Low current noise and low voltage coefficient<\/li>\n
  • Excellent long-term stability (0.1% per 1000h)<\/li>\n
  • Miniature 0402 package for high-density PCB designs<\/li>\n
  • Moisture resistant overcoat<\/li>\n
  • Suitable for precision measurement and instrumentation<\/li>\n
  • RoHS compliant and lead-free terminations<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Precision measurement and instrumentation<\/li>\n
    • Medical device calibration circuits<\/li>\n
    • Feedback and voltage divider networks<\/li>\n
    • Data acquisition and signal conditioning<\/li>\n
    • Precision current sensing<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The CMF0402 50K5 0.1% 25PPM\/K is a precision thin film chip resistor in an 0402 (1005 metric) package with a resistance of 50.5kOhm, a tight tolerance of +\/-0.1%, and a low temperature coefficient of resistance (TCR) of +\/-25 ppm\/\u00b0C. Designed for high-precision analog and measurement applications, it provides excellent long-term stability and low […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13],"tags":[1717],"chip_brand":[136],"class_list":["post-10415","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","tag-cmf0402-50k5-0-1-25ppm-k","chip_brand-vishay"],"acf":{"brief_explanation":"50.5kOhm 0.1% thin film resistor, 25ppm\/C TCR, 0402","date_code":"","package_case":"0402 (1.0 x 0.5 x 0.35 mm)","in_stock":8921,"datasheet":"https:\/\/www.vishay.com\/docs\/28757\/snc0402e3.pdf","price":"$0.15 @ 1ku","product_introduction":"The CMF0402 50K5 0.1% 25PPM\/K is a precision thin film chip resistor providing 50.5kOhm resistance with +\/-0.1% tolerance and +\/-25 ppm\/\u00b0C temperature coefficient in a miniature 0402 package. Manufactured using a NiCr thin film alloy on a high-purity alumina substrate, it offers excellent long-term stability, low noise, and minimal voltage coefficient. The combination of tight tolerance and low TCR makes this resistor ideal for precision voltage dividers, feedback networks, and measurement circuits where accuracy and stability are paramount.","working_principle":"The CMF0402 precision resistor operates as a passive resistive element. 1) Thin Film Subsystem: A precisely controlled NiCr (nickel-chromium) alloy thin film is deposited on the alumina substrate via sputtering, then photolithographically patterned and laser-trimmed to achieve the target resistance of 50.5kOhm with +\/-0.1% tolerance. 2) Stability Subsystem: The NiCr alloy formulation provides inherently low TCR (+\/-25 ppm\/\u00b0C), ensuring resistance variation remains within +\/-0.25% over the -55\u00b0C to +155\u00b0C range. 3) Protection Subsystem: A conformal epoxy coating provides moisture and mechanical protection while maintaining thermal performance. 4) Termination Subsystem: Nickel barrier layer with tin-over-matte-tin plating ensures reliable solder joints and prevents solder leaching.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Terminal A<\/td>Terminal<\/td>First resistive terminal (solder to PCB)<\/td><\/tr>
      2<\/td>Terminal B<\/td>Terminal<\/td>Second resistive terminal (solder to PCB)<\/td><\/tr><\/table>","application_scenarios":"
      • Precision Measurement: Bridge circuits and reference voltage dividers in DMMs<\/li>
      • Medical Instrumentation: Calibration and feedback networks in patient monitors<\/li>
      • Data Acquisition: Input conditioning and range-setting in ADC\/DAC circuits<\/li>
      • Industrial Control: Precision feedback in PID controllers and sensor interfaces<\/li>
      • Current Sensing: Shunt and sense resistors in precision current measurement<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Panasonic<\/td>ERA-2AEB5052X<\/td>0402<\/td>50.5kOhm 0.1% 25ppm, thin film<\/td><\/tr>
        Yageo<\/td>RT0402BRD0750KL<\/td>0402<\/td>50kOhm 0.1% 25ppm, thin film<\/td><\/tr>
        Susumu<\/td>RG1005P-5052-B-T5<\/td>0402<\/td>50.5kOhm 0.1% 25ppm, thin film<\/td><\/tr>
        TE Connectivity<\/td>RPC0402BR-50K5LN<\/td>0402<\/td>50.5kOhm 0.1% 25ppm<\/td><\/tr>
        ROYALOHM<\/td>RC0402BR-0750KL<\/td>0402<\/td>50kOhm 0.1% thin film resistor<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=10415"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/10415\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=10415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=10415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=10415"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}