{"id":9275,"date":"2026-07-03T04:40:16","date_gmt":"2026-07-03T04:40:16","guid":{"rendered":"https:\/\/materialparts.com\/erj-2rkf2493x\/"},"modified":"2026-07-03T04:40:39","modified_gmt":"2026-07-03T04:40:39","slug":"erj-2rkf2493x","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/erj-2rkf2493x\/","title":{"rendered":"ERJ-2RKF2493X"},"content":{"rendered":"

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

The ERJ-2RKF2493X is a thick film chip resistor from Panasonic’s ERJ series, featuring 249 kOhm resistance with \u00b11% tolerance and \u00b1100 ppm\/\u00b0C temperature coefficient in an ultra-compact 0402 (1005 Metric) surface-mount package. AEC-Q200 qualified, the E96 series resistance value enables precision circuit design in space-constrained applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Resistance<\/td>\n249 kOhm<\/td>\n<\/tr>\n
Tolerance<\/td>\n\u00b11% (F)<\/td>\n<\/tr>\n
Power Rating<\/td>\n0.1W (1\/10W)<\/td>\n<\/tr>\n
Temperature Coefficient<\/td>\n\u00b1100 ppm\/\u00b0C<\/td>\n<\/tr>\n
Package \/ Case<\/td>\n0402 (1005 Metric)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55\u00b0C to +155\u00b0C<\/td>\n<\/tr>\n
\u8d44\u683c<\/td>\nAEC-Q200<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q200 automotive qualified<\/li>\n
  • E96 precision resistance value (249 kOhm)<\/li>\n
  • Ultra-compact 0402 for highest density<\/li>\n
  • \u00b11% tolerance with \u00b1100 ppm\/\u00b0C TCR<\/li>\n
  • Metal glaze thick film construction<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • High-impedance voltage divider networks<\/li>\n
    • Automotive sensor biasing<\/li>\n
    • Precision feedback in low-power amplifiers<\/li>\n
    • IoT device signal conditioning<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The ERJ-2RKF2493X is a thick film chip resistor from Panasonic’s ERJ series, featuring 249 kOhm resistance with \u00b11% tolerance and \u00b1100 ppm\/\u00b0C temperature coefficient in an ultra-compact 0402 (1005 Metric) surface-mount package. AEC-Q200 qualified, the E96 series resistance value enables precision circuit design in space-constrained applications. Key Specifications Resistance 249 kOhm Tolerance \u00b11% […]<\/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":[13,62],"tags":[441],"chip_brand":[238],"class_list":["post-9275","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-resistors","tag-erj-2rkf2493x","chip_brand-panasonic"],"acf":{"brief_explanation":"249kOhm 0.1W thick film resistor, 0402, \u00b11%, \u00b1100ppm\/\u00b0C, AEC-Q200","date_code":"","package_case":"0402 (1005 Metric) 1.0 x 0.5 x 0.35 mm","in_stock":55000,"datasheet":"https:\/\/industrial.panasonic.com\/cdbs\/www-data\/pdf\/RDA0000-AU0000\/DI00001717.pdf","price":"$0.003 @ 10ku","product_introduction":"The ERJ-2RKF2493X is a thick film chip resistor from Panasonic's ERJ series, featuring 249 kOhm resistance with \u00b11% tolerance and \u00b1100 ppm\/\u00b0C temperature coefficient in an ultra-compact 0402 (1005 Metric) surface-mount package. AEC-Q200 qualified, the E96 series resistance value enables precision circuit design in space-constrained applications like wearables, IoT sensors, and portable medical devices.","working_principle":"The ERJ-2RKF2493X operates as a passive thick film resistor:\n\n1. Resistive Element: Metal glaze thick film on alumina ceramic substrate, laser-trimmed to the precise 249 kOhm E96 value.\n\n2. Triple-Layer Electrode: Silver-palladium inner, nickel barrier, tin outer plating for reliable solder joints.\n\n3. Power Derating: Full 0.1W up to 70\u00b0C, derating to zero at 155\u00b0C.\n\n4. Miniaturization: The 0402 package achieves 75% area reduction compared to 0805, critical for high-density IoT and wearable designs.","pin_description":"\n
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Terminal A<\/td>Passive<\/td>Resistor terminal<\/td><\/tr>\n
      2<\/td>Terminal B<\/td>Passive<\/td>Resistor terminal<\/td><\/tr>\n<\/table>\n

      Note: 2-terminal passive chip resistor, no polarity. 0402 package requires reflow soldering only.<\/p>","application_scenarios":"\n
      Application<\/th>Circuit Role<\/th>Key Requirement<\/th><\/tr>\n
      IoT Sensor<\/td>High-impedance voltage divider<\/td>249k E96, 0402, AEC-Q200<\/td><\/tr>\n
      Wearable Device<\/td>Biasing in low-power amplifiers<\/td>Ultra-compact 0402<\/td><\/tr>\n
      Automotive ECU<\/td>Sensor interface biasing<\/td>\u00b11%, \u00b1100 ppm\/\u00b0C<\/td><\/tr>\n
      Medical Portable<\/td>Precision measurement bridge<\/td>249k, low drift<\/td><\/tr>\n
      Industrial<\/td>High-impedance feedback<\/td>E96 precision, 0.1W<\/td><\/tr>\n<\/table>","alternative_models":"\n
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Key Specs<\/th>Notes<\/th><\/tr>\n
      Vishay<\/td>CRCW0402249KFKEA<\/td>0402<\/td>249kOhm, 0.063W, 1%<\/td>Direct equivalent<\/td><\/tr>\n
      Yageo<\/td>RC0402FR-07249KL<\/td>0402<\/td>249kOhm, 0.063W, 1%<\/td>Direct equivalent<\/td><\/tr>\n
      KOA Speer<\/td>RK73H1ETTP2493F<\/td>0402<\/td>249kOhm, 0.063W, 1%<\/td>Direct equivalent<\/td><\/tr>\n
      Samsung<\/td>RC1005F2493CS<\/td>0402<\/td>249kOhm, 0.063W, 1%<\/td>Direct equivalent<\/td><\/tr>\n
      Walsin<\/td>WR04X2493FTL<\/td>0402<\/td>249kOhm, 0.063W, 1%<\/td>Direct equivalent<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9275","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=9275"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9275\/revisions"}],"predecessor-version":[{"id":9285,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9275\/revisions\/9285"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9275"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}