{"id":9330,"date":"2026-07-03T05:50:55","date_gmt":"2026-07-03T05:50:55","guid":{"rendered":"https:\/\/materialparts.com\/rk73b1jttd2r2j\/"},"modified":"2026-07-03T08:06:00","modified_gmt":"2026-07-03T08:06:00","slug":"rk73b1jttd2r2j","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/rk73b1jttd2r2j\/","title":{"rendered":"RK73B1JTTD2R2J"},"content":{"rendered":"

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

The RK73B1JTTD2R2J is a thick film chip resistor from KOA Speer’s RK73B series, featuring 2.2Ohm resistance with +\/-5% tolerance in a 0603 (1608 Metric) surface-mount package. Rated at 0.1W with +\/-200 ppm\/C TCR, AEC-Q200 qualified for low-resistance damping and current limiting in automotive applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n
Resistance<\/td>\n2.2 Ohm<\/td>\n<\/tr>\n
Tolerance<\/td>\n+\/-5% (J)<\/td>\n<\/tr>\n
Power Rating<\/td>\n0.1W (1\/10W)<\/td>\n<\/tr>\n
TCR<\/td>\n+\/-200 ppm\/C<\/td>\n<\/tr>\n
Package \/ Case<\/td>\n0603 (1608 Metric)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55C to +155C<\/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
  • 2.2Ohm very low resistance for damping<\/li>\n
  • 0603 compact footprint<\/li>\n
  • General-purpose +\/-5% tolerance<\/li>\n
  • KOA Speer automotive reliability<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Power supply output damping<\/li>\n
    • Inrush current limiting<\/li>\n
    • EMI suppression resistor<\/li>\n
    • MOSFET gate damping<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The RK73B1JTTD2R2J is a thick film chip resistor from KOA Speer’s RK73B series, featuring 2.2Ohm resistance with +\/-5% tolerance in a 0603 (1608 Metric) surface-mount package. Rated at 0.1W with +\/-200 ppm\/C TCR, AEC-Q200 qualified for low-resistance damping and current limiting in automotive applications. Key Specifications Resistance 2.2 Ohm Tolerance +\/-5% (J) Power […]<\/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":[761],"chip_brand":[400],"class_list":["post-9330","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-resistors","tag-rk73b1jttd2r2j","chip_brand-koa-speer"],"acf":{"brief_explanation":"2.2Ohm +\/-5% 0.1W thick film resistor, 0603, +\/-200 ppm\/C, AEC-Q200","date_code":"","package_case":"0603 (1608 Metric) 1.6 x 0.8 x 0.55 mm","in_stock":20464,"datasheet":"https:\/\/www.koaglobal.com\/-\/media\/Files\/KOA_Global\/product\/commonpdf\/rk73b.pdf","price":"$0.004 @ 10ku","product_introduction":"The RK73B1JTTD2R2J is a thick film chip resistor from KOA Speer's RK73B series, featuring 2.2Ohm resistance with +\/-5% tolerance in a 0603 (1608 Metric) surface-mount package. Rated at 0.1W with +\/-200 ppm\/C TCR, AEC-Q200 qualified. The very low 2.2Ohm value is commonly used for power supply output damping, inrush current limiting, EMI suppression, and MOSFET gate damping in automotive power circuits.","working_principle":"The RK73B1JTTD2R2J operates as a passive thick film resistor:\n\n1. Low Resistance Value: 2.2Ohm is one of the lowest standard thick film resistor values. It provides minimal resistance while still offering measurable damping and current limiting.\n\n2. Power Supply Damping: In switching power supplies, a 2.2Ohm series resistor with a ceramic capacitor forms an RC damper that suppresses ringing caused by parasitic LC resonance.\n\n3. Inrush Current Limiting: When placed in series with capacitive loads, the 2.2Ohm resistor limits peak inrush current to manageable levels during power-up.\n\n4. AEC-Q200: Automotive qualification ensures reliability even at elevated temperatures where the resistor must dissipate heat.\n\n5. MOSFET Gate Damping: Placed between gate driver output and MOSFET gate to dampen high-frequency oscillations during switching transitions.","pin_description":"\n
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Terminal A<\/td>Passive<\/td>Resistive element connection<\/td><\/tr>\n
      2<\/td>Terminal B<\/td>Passive<\/td>Resistive element connection<\/td><\/tr>\n<\/table>","application_scenarios":"\n
      Application<\/th>Circuit Role<\/th>Key Requirement<\/th><\/tr>\n
      Power Supply<\/td>Output LC damper resistor<\/td>2.2Ohm, 0603, AEC-Q200<\/td><\/tr>\n
      DC-DC Converter<\/td>Inrush current limiter<\/td>2.2Ohm, 5%, 0.1W<\/td><\/tr>\n
      EMI Filter<\/td>Suppression resistor<\/td>2.2Ohm, low value, reliable<\/td><\/tr>\n
      MOSFET Gate<\/td>Gate damping resistor<\/td>2.2Ohm, 0603, auto grade<\/td><\/tr>\n
      Industrial<\/td>Snubber network resistor<\/td>2.2Ohm, 5%, 0603<\/td><\/tr>\n<\/table>","alternative_models":"\n
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Key Specs<\/th>Notes<\/th><\/tr>\n
      Vishay<\/td>CRCW06032R20JNEA<\/td>0603<\/td>2.2Ohm, 5%, 0.1W, AEC-Q200<\/td>Direct equivalent<\/td><\/tr>\n
      Panasonic<\/td>ERJ-3GEYJ2R2V<\/td>0603<\/td>2.2Ohm, 5%, 0.1W, AEC-Q200<\/td>Direct equivalent<\/td><\/tr>\n
      Yageo<\/td>RC0603JR-072R2L<\/td>0603<\/td>2.2Ohm, 5%, 0.1W<\/td>Direct equivalent<\/td><\/tr>\n
      Bourns<\/td>CR0603-JW-2R2ELF<\/td>0603<\/td>2.2Ohm, 5%, 0.1W<\/td>Direct equivalent<\/td><\/tr>\n
      Walsin<\/td>WR06X2R2JTL<\/td>0603<\/td>2.2Ohm, 5%, 0.1W<\/td>Direct equivalent<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9330","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=9330"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9330\/revisions"}],"predecessor-version":[{"id":9362,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9330\/revisions\/9362"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9330"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9330"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9330"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9330"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}