{"id":8604,"date":"2026-06-29T06:56:32","date_gmt":"2026-06-29T06:56:32","guid":{"rendered":"https:\/\/materialparts.com\/40tps12a\/"},"modified":"2026-06-29T06:56:32","modified_gmt":"2026-06-29T06:56:32","slug":"40tps12a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/40tps12a\/","title":{"rendered":"40TPS12A"},"content":{"rendered":"

Productos<\/h2>\n

The Vishay 40TPS12A is a phase control silicon controlled rectifier (SCR) rated at 1200 V reverse voltage with 55 A RMS on-state current. Packaged in TO-247AC, it utilizes glass passivation technology for reliable operation up to 125\u00b0C junction temperature, and is designed for medium power switching and phase control applications such as soft starters, motor controls, and power regulators.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n
VDRM \/ VRRM<\/td>\n1200 V<\/td>\n<\/tr>\n
IT(RMS)<\/td>\n55 A<\/td>\n<\/tr>\n
IT(AV)<\/td>\n35 A<\/td>\n<\/tr>\n
IGT (Gate Trigger)<\/td>\n200 mA max<\/td>\n<\/tr>\n
VTM<\/td>\n1.35 V max<\/td>\n<\/tr>\n
Paquete<\/td>\nTO-247AC<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 1200 V reverse voltage rating for high-voltage applications<\/li>\n
  • Glass passivation technology for reliability<\/li>\n
  • 55 A RMS current capability<\/li>\n
  • Low gate trigger current: 200 mA max<\/li>\n
  • Operating junction temperature: -40\u00b0C to +125\u00b0C<\/li>\n
  • TO-247AC package for efficient heat sinking<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Soft start circuits for motors<\/li>\n
    • Phase control power regulators<\/li>\n
    • AC static switches and contactors<\/li>\n
    • Heating element control<\/li>\n
    • Battery charger rectification<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Vishay 40TPS12A is a phase control silicon controlled rectifier (SCR) rated at 1200 V reverse voltage with 55 A RMS on-state current. Packaged in TO-247AC, it utilizes glass passivation technology for reliable operation up to 125\u00b0C junction temperature, and is designed for medium power switching and phase control applications such as soft […]<\/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":[57,13],"tags":[],"chip_brand":[136],"class_list":["post-8604","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-vishay"],"acf":{"brief_explanation":"Phase control SCR, 1200V, 55A RMS, 35A avg, TO-247AC, glass passivated, low Igt","date_code":"","package_case":"TO-247AC (3-lead)","in_stock":5430,"datasheet":"https:\/\/www.vishay.com\/docs\/94565\/40tps12a.pdf","price":"$3.78 @ 1ku","product_introduction":"The 40TPS12A from Vishay is a high-voltage phase control SCR designed for medium power switching and phase control applications. With a 1200 V repetitive peak off-state voltage rating and 55 A RMS on-state current, it is suitable for demanding industrial power control. The device uses glass passivation technology that provides reliable operation up to 125\u00b0C junction temperature. The TO-247AC package enables efficient thermal management with low thermal resistance, making it ideal for applications requiring high power dissipation in a compact footprint.","working_principle":"The 40TPS12A is a three-terminal semiconductor device (anode, cathode, gate) that operates as a latch. In the off-state, the SCR blocks forward voltage between anode and cathode. When a positive gate current above the trigger threshold (200 mA max) is applied, the internal NPN-PNP regenerative feedback loop is activated, causing the device to latch on. Once latched, the gate loses control and the SCR remains conducting until the anode current falls below the holding current. The device returns to the blocking state when the current crosses zero during AC operation. Phase control is achieved by varying the gate trigger timing relative to the AC zero crossing, thereby controlling the conduction angle and average power delivered to the load.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>Cathode<\/td>Power<\/td>Cathode terminal<\/td><\/tr>\n
      2<\/td>Anode<\/td>Power<\/td>Anode terminal (connected to tab)<\/td><\/tr>\n
      3<\/td>Gate<\/td>Input<\/td>Gate trigger terminal<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • AC motor soft-start controllers<\/li>\n
      • Phase-angle power regulators for heating<\/li>\n
      • Static AC switches for industrial contactors<\/li>\n
      • High-voltage battery charger rectifiers<\/li>\n
      • Welder current control circuits<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Voltage<\/th>Current<\/th>Notes<\/th><\/tr>\n
        ST<\/td>TS80TP-12B<\/td>1200 V<\/td>80 A<\/td>Higher current alternative<\/td><\/tr>\n
        Infineon<\/td>SKKT42B12E<\/td>1200 V<\/td>42 A<\/td>Module-type alternative<\/td><\/tr>\n
        Littelfuse<\/td>S8035W<\/td>1200 V<\/td>35 A<\/td>Similar rating SCR<\/td><\/tr>\n
        Vishay<\/td>40TPS16A<\/td>1600 V<\/td>55 A<\/td>Higher voltage variant<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8604","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=8604"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/8604\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=8604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=8604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=8604"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=8604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}