{"id":11269,"date":"2026-07-26T03:51:21","date_gmt":"2026-07-26T03:51:21","guid":{"rendered":"https:\/\/ic-vendor.com\/sm8s33athe3-i\/"},"modified":"2026-07-26T03:51:21","modified_gmt":"2026-07-26T03:51:21","slug":"sm8s33athe3-i","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/sm8s33athe3-i\/","title":{"rendered":"SM8S33ATHE3\/I"},"content":{"rendered":"

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

The Semtech SM8S33ATHE3\/I is a 6000W peak pulse power unidirectional TVS diode for 24V automotive bus protection. 33V standoff voltage, 36.7V breakdown in a DO-218AB (SM8) package.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Direction<\/td>\nUnidirectional<\/td>\n<\/tr>\n
Standoff Voltage (VWM)<\/td>\n33 V<\/td>\n<\/tr>\n
Breakdown Voltage (VBR)<\/td>\n36.7V min, 40.6V max<\/td>\n<\/tr>\n
Clamping Voltage (VC)<\/td>\n53.3V @ 112A<\/td>\n<\/tr>\n
Peak Pulse Power (PPP)<\/td>\n6000 W (10\/1000us)<\/td>\n<\/tr>\n
Peak Pulse Current (IPP)<\/td>\n112 A<\/td>\n<\/tr>\n
Leakage Current<\/td>\n1 uA max @ 33V<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-55 to +175C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nDO-218AB (SM8, 7.1×6.1mm)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 6000W peak pulse power<\/li>\n
  • Unidirectional for DC line protection<\/li>\n
  • AEC-Q101 automotive qualified<\/li>\n
  • ISO 7637 load dump suppression<\/li>\n
  • Low 1uA leakage at standoff<\/li>\n
  • DO-218AB high-reliability package<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • 24V truck\/bus battery line protection<\/li>\n
    • Industrial 24V DC supply TVS<\/li>\n
    • ISO 7637 Pulse 5a\/5b suppression<\/li>\n
    • Heavy-duty vehicle ECU protection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The Semtech SM8S33ATHE3\/I is a 6000W peak pulse power unidirectional TVS diode for 24V automotive bus protection. 33V standoff voltage, 36.7V breakdown in a DO-218AB (SM8) package. Key Specifications Direction Unidirectional Standoff Voltage (VWM) 33 V Breakdown Voltage (VBR) 36.7V min, 40.6V max Clamping Voltage (VC) 53.3V @ 112A Peak Pulse Power (PPP) […]<\/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":[2545],"chip_brand":[136],"class_list":["post-11269","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","tag-sm8s33athe3-i","chip_brand-vishay"],"acf":{"brief_explanation":"6000W unidirectional TVS, 33V VWM, 53.3V Vc, DO-218AB, AEC-Q101, -55 to 175C","date_code":"","package_case":"DO-218AB (SM8, 7.1x6.1x2.5mm)","in_stock":4503,"datasheet":"https:\/\/www.semtech.com\/uploads\/documents\/SM8S33A-D.PDF","price":"$0.90 @ 1ku","product_introduction":"The SM8S33ATHE3\/I from Semtech is a 6000W peak pulse power unidirectional TVS diode in an automotive DO-218AB (SM8) package. With 33V standoff voltage and 53.3V clamping voltage at 112A, it protects 24V automotive and industrial DC supply lines against load dump and transient events. The unidirectional configuration provides optimal protection for positive voltage rails. AEC-Q101 qualified with 1uA leakage current.","working_principle":"The SM8S33A uses a large-area silicon avalanche diode for high energy absorption. Below 33V standoff, the device presents high impedance. When a positive transient exceeds breakdown (36.7-40.6V), avalanche multiplication clamps to 53.3V at peak current. In reverse direction, the forward-biased junction conducts at ~0.7V for negative transients. The DO-218AB package provides excellent thermal transfer for dissipating transient energy.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>Anode<\/td>I\/O<\/td>Ground\/reference<\/td><\/tr>
      2<\/td>Cathode<\/td>I\/O<\/td>Protected positive line<\/td><\/tr><\/table>","application_scenarios":"
      • 24V truck battery bus TVS protection<\/li>
      • Industrial 24V DC supply transient suppression<\/li>
      • Heavy vehicle ISO 7637 load dump<\/li>
      • Construction equipment ECU protection<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        SMBJ33A<\/td>Littelfuse<\/td>600W, SMB package, lower power<\/td><\/tr>
        5.0SMDJ33A<\/td>Littelfuse<\/td>3000W, SMC package<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=11269"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/11269\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=11269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=11269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=11269"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=11269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}