{"id":9207,"date":"2026-07-02T14:03:06","date_gmt":"2026-07-02T14:03:06","guid":{"rendered":"https:\/\/materialparts.com\/rk73b2ettd132j\/"},"modified":"2026-07-02T14:05:45","modified_gmt":"2026-07-02T14:05:45","slug":"rk73b2ettd132j","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/rk73b2ettd132j\/","title":{"rendered":"RK73B2ETTD132J"},"content":{"rendered":"

Productos<\/h2>\n

The RK73B2ETTD132J is a general-purpose thick film chip resistor manufactured by KOA Speer Electronics, Inc. It features a resistance of 1.3 kOhm with a power rating of 0.5W (1\/2W) in a 1210 (3225 Metric) surface-mount package. With \u00b15% tolerance and \u00b1200 ppm\/\u00b0C temperature coefficient, this resistor is AEC-Q200 qualified, making it suitable for demanding automotive and industrial environments. The device operates over a wide temperature range of -55\u00b0C to +155\u00b0C and supports a maximum working voltage of 200V. Its metal glaze thick film construction ensures excellent heat resistance and weather resistance, while the triple-layer electrode structure provides high reliability and long-term stability.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Resistance<\/td>\n1.3 kOhm<\/td>\n<\/tr>\n
Power Rating<\/td>\n0.5W (1\/2W)<\/td>\n<\/tr>\n
Tolerance<\/td>\n\u00b15%<\/td>\n<\/tr>\n
Temperature Coefficient<\/td>\n\u00b1200 ppm\/\u00b0C<\/td>\n<\/tr>\n
Package \/ Case<\/td>\n1210 (3225 Metric)<\/td>\n<\/tr>\n
Maximum Working Voltage<\/td>\n200V<\/td>\n<\/tr>\n
Maximum Overload Voltage<\/td>\n400V<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-55\u00b0C to +155\u00b0C<\/td>\n<\/tr>\n
Rated Ambient Temperature<\/td>\n70\u00b0C<\/td>\n<\/tr>\n
Rated Terminal Part Temperature<\/td>\n125\u00b0C<\/td>\n<\/tr>\n
Composition<\/td>\nThick Film (Metal Glaze)<\/td>\n<\/tr>\n
Termination Style<\/td>\nSMD\/SMT (Sn Plating)<\/td>\n<\/tr>\n
Number of Terminations<\/td>\n2<\/td>\n<\/tr>\n
Embalaje<\/td>\nTape and Reel<\/td>\n<\/tr>\n
Cualificaci\u00f3n<\/td>\nAEC-Q200<\/td>\n<\/tr>\n
EU RoHS<\/td>\nCompliant with Exemption<\/td>\n<\/tr>\n
Dimensions (L x W x T)<\/td>\n3.2 x 2.6 x 0.6 mm<\/td>\n<\/tr>\n
Weight<\/td>\n0.0155g (per unit)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • AEC-Q200 qualified for automotive grade reliability<\/li>\n
  • Metal glaze thick film provides excellent heat resistance and weather resistance<\/li>\n
  • Triple-layer electrode structure (inner electrode \/ Ni plating \/ Sn plating) ensures high reliability<\/li>\n
  • Suitable for both flow and reflow soldering processes<\/li>\n
  • Lead-free terminations meet EU RoHS requirements<\/li>\n
  • Wide size lineup from 01005 to 2512 in the RK73B series<\/li>\n
  • Rated terminal part temperature of 125\u00b0C enables high-temperature operation<\/li>\n
  • Derating curve applies linearly from 70\u00b0C to 155\u00b0C ambient temperature<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Automotive electronics and car infotainment systems<\/li>\n
    • Power supply and voltage regulation circuits<\/li>\n
    • Industrial control and automation equipment<\/li>\n
    • Electr\u00f3nica de consumo y electrodom\u00e9sticos<\/li>\n
    • Industrial robot and machinery controllers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The RK73B2ETTD132J is a general-purpose thick film chip resistor manufactured by KOA Speer Electronics, Inc. It features a resistance of 1.3 kOhm with a power rating of 0.5W (1\/2W) in a 1210 (3225 Metric) surface-mount package. With \u00b15% tolerance and \u00b1200 ppm\/\u00b0C temperature coefficient, this resistor is AEC-Q200 qualified, making it suitable for […]<\/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":[403],"chip_brand":[400],"class_list":["post-9207","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-resistors","tag-rk73b2ettd132j","chip_brand-koa-speer"],"acf":{"brief_explanation":"1.3kOhm 0.5W thick film chip resistor, 1210 package, \u00b15%, \u00b1200ppm\/\u00b0C, AEC-Q200 automotive grade","date_code":"","package_case":"1210 (3225 Metric) 3.2 x 2.6 x 0.6 mm","in_stock":6581,"datasheet":"https:\/\/www.mouser.com\/ds\/2\/219\/RK73B-919.pdf","price":"$0.02 @ 1ku","product_introduction":"The RK73B2ETTD132J is a thick film flat chip resistor from KOA Speer Electronics' RK73B series, designed for general-purpose applications requiring reliable performance under demanding conditions. The resistor utilizes a metal glaze thick film deposited on a high-purity alumina ceramic substrate, providing excellent heat resistance and environmental stability. The triple-layer electrode construction consists of an inner electrode (Ag\/Pd thick film), nickel plating for barrier protection, and tin plating for solderability. With a power rating of 0.5W and resistance value of 1.3 kOhm, this device is well-suited for medium-power signal conditioning and biasing networks. AEC-Q200 qualification ensures the component meets stringent automotive reliability standards, including resistance to thermal shock, moisture, and extended high-temperature exposure. The 1210 case size offers a practical balance between power handling capability and PCB area efficiency, making it a popular choice for space-constrained automotive and industrial designs.","working_principle":"The RK73B2ETTD132J operates as a passive thick film resistor through the following mechanisms:\n\n1. Resistive Element: A metal glaze thick film (ruthenium oxide based) is screen-printed onto the alumina ceramic substrate and fired at high temperature. The resistance value is determined by the film composition, thickness, and geometric pattern.\n\n2. Triple-Layer Electrode: The inner electrode (Ag\/Pd alloy) provides low-resistance contact to the resistive film. The nickel barrier layer prevents solder leaching and migration. The outer tin plating enables reliable solder joint formation during assembly.\n\n3. Power Derating: At ambient temperatures up to 70\u00b0C, the full 0.5W power rating is available. Above 70\u00b0C, the allowable power dissipation decreases linearly to zero at 155\u00b0C, ensuring the resistor element stays within safe thermal limits.\n\n4. Voltage Limitation: The effective working voltage is the lesser of the calculated value (sqrt(P x R)) and the maximum rated voltage of 200V. For the 1.3 kOhm value, the voltage-limited regime applies at lower power levels.","pin_description":"\n
      Terminal<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Terminal A<\/td>Passive<\/td>Resistor terminal - connected to one end of the resistive element through inner electrode<\/td><\/tr>\n
      2<\/td>Terminal B<\/td>Passive<\/td>Resistor terminal - connected to the other end of the resistive element through inner electrode<\/td><\/tr>\n<\/table>\n

      Note: This is a 2-terminal passive chip resistor with no polarity. The 1210 package has a rectangular shape with terminations on opposite ends. Land pattern dimensions per IPC-7351: pad width 1.0-1.4mm, pad length 0.8-1.2mm, pad spacing 1.6-2.0mm.<\/p>","application_scenarios":"\n
      Application<\/th>Circuit Role<\/th>Key Requirement<\/th><\/tr>\n
      Automotive ECU<\/td>Pull-up\/pull-down resistor in signal lines<\/td>AEC-Q200, -55\u00b0C to +155\u00b0C operation<\/td><\/tr>\n
      Power Supply<\/td>Voltage divider and feedback network<\/td>0.5W power rating, 200V withstand<\/td><\/tr>\n
      Industrial Control<\/td>Current limiting and biasing<\/td>High reliability, moisture resistance<\/td><\/tr>\n
      Consumer Electronics<\/td>General-purpose signal conditioning<\/td>Cost-effective, RoHS compliant<\/td><\/tr>\n
      Robot Controller<\/td>Interface resistor in motor drive circuits<\/td>Thermal stability, \u00b1200 ppm\/\u00b0C TCR<\/td><\/tr>\n<\/table>","alternative_models":"\n
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Key Specs<\/th>Notes<\/th><\/tr>\n
      Vishay<\/td>CRCW12101K30JNEA<\/td>1210<\/td>1.3kOhm, 0.25W, 5%, 200ppm\/\u00b0C<\/td>Lower power rating<\/td><\/tr>\n
      Yageo<\/td>RC1210JR-071K3L<\/td>1210<\/td>1.3kOhm, 0.25W, 5%<\/td>Lower power rating<\/td><\/tr>\n
      Panasonic<\/td>ERJ-8ENF1321V<\/td>1210<\/td>1.3kOhm, 0.25W, 1%<\/td>Higher precision<\/td><\/tr>\n
      Walsin<\/td>WR12X132JTL<\/td>1210<\/td>1.3kOhm, 0.25W, 5%<\/td>Lower power rating<\/td><\/tr>\n
      TE Connectivity<\/td>CRG1210F1K3<\/td>1210<\/td>1.3kOhm, 0.5W, 1%<\/td>Higher precision, same power<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=9207"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9207\/revisions"}],"predecessor-version":[{"id":9208,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/9207\/revisions\/9208"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=9207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=9207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=9207"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=9207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}