{"id":10344,"date":"2026-07-19T12:25:23","date_gmt":"2026-07-19T12:25:23","guid":{"rendered":"https:\/\/ic-vendor.com\/smbj400ca\/"},"modified":"2026-07-19T12:25:23","modified_gmt":"2026-07-19T12:25:23","slug":"smbj400ca","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/smbj400ca\/","title":{"rendered":"SMBJ400CA"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The SMBJ400CA is a 600W bidirectional TVS diode from Littelfuse’s SMBJ series in a DO-214AA (SMB) surface-mount package. It provides high-voltage transient suppression with a reverse standoff voltage of 400V, suitable for protecting high-voltage DC buses and industrial power circuits.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Reverse Standoff Voltage (Vr)<\/td>\n400V<\/td>\n<\/tr>\n
Breakdown Voltage Min<\/td>\n447V<\/td>\n<\/tr>\n
Breakdown Voltage Max<\/td>\n494V<\/td>\n<\/tr>\n
Clamping Voltage (Vc)<\/td>\n648V<\/td>\n<\/tr>\n
Peak Pulse Power (10\/1000\u03bcs)<\/td>\n600W<\/td>\n<\/tr>\n
Peak Pulse Current (Ipp)<\/td>\n1.0A<\/td>\n<\/tr>\n
Leakage Current (Ir)<\/td>\n<1\u03bcA<\/td>\n<\/tr>\n
\u0627\u0644\u0642\u0637\u0628\u064a\u0629<\/td>\nBidirectional<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nDO-214AA (SMB)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +150 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 600W peak pulse power at 10\/1000\u03bcs<\/li>\n
  • Bidirectional protection<\/li>\n
  • Excellent clamping capability at 648V<\/li>\n
  • Low leakage current<\/li>\n
  • Surface-mount SMB package<\/li>\n
  • Halogen-free, RoHS compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • High-voltage DC bus protection<\/li>\n
    • Industrial motor drive and inverter protection<\/li>\n
    • Power supply output transient suppression<\/li>\n
    • Lightning-induced surge protection<\/li>\n
    • Telecom base station equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The SMBJ400CA is a 600W bidirectional TVS diode from Littelfuse’s SMBJ series in a DO-214AA (SMB) surface-mount package. It provides high-voltage transient suppression with a reverse standoff voltage of 400V, suitable for protecting high-voltage DC buses and industrial power circuits. Key Specifications Reverse Standoff Voltage (Vr) 400V Breakdown Voltage Min 447V Breakdown Voltage […]<\/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":[60],"tags":[1608,1618,1607],"chip_brand":[200],"class_list":["post-10344","post","type-post","status-publish","format-standard","hentry","category-passive-components","tag-bidirectional","tag-smbj400ca","tag-tvs-diode","chip_brand-littelfuse"],"acf":{"brief_explanation":"TVS Diode 600W Bi-Dir 400Vr 648Vc DO-214AA SMB, -55~150\u00b0C","date_code":"","package_case":"DO-214AA (SMB)","in_stock":7300,"datasheet":"https:\/\/www.littelfuse.com\/media?res=700091&download=1","price":"","product_introduction":"The SMBJ400CA is a 600W bidirectional TVS diode from Littelfuse's SMBJ series, providing high-voltage transient suppression for industrial and telecom power circuits. With a reverse standoff voltage of 400V and maximum clamping voltage of 648V, it is designed to protect high-voltage DC buses, motor drives, and power supply outputs from lightning-induced and switching transients. The bidirectional configuration makes it suitable for AC line protection as well.","working_principle":"Under normal operating conditions below 400V, the SMBJ400CA presents very high impedance with leakage current below 1\u03bcA. When a transient voltage exceeds the breakdown threshold (447-494V), the avalanche junction rapidly conducts and clamps the voltage to a maximum of 648V at the rated peak pulse current. The bidirectional configuration uses two avalanche junctions in anti-series, providing symmetrical clamping for both positive and negative transients. After the transient subsides, the device automatically returns to its blocking state.","pin_description":"
      Pin<\/th>Function<\/th><\/tr>
      1<\/td>Cathode (banded end)<\/td><\/tr>
      2<\/td>Anode<\/td><\/tr><\/table>

      Note: Bidirectional \u2014 no polarity distinction in operation.<\/p>","application_scenarios":"

      • 380V AC industrial power line surge protection<\/li>
      • High-voltage DC bus clamping (300-400V systems)<\/li>
      • Motor drive and inverter DC link protection<\/li>
      • Telecom base station rectifier output protection<\/li>
      • Renewable energy inverter protection<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Vr<\/th>Pppm<\/th>Notes<\/th><\/tr>
        Vishay<\/td>SMBJ400CA<\/td>400V<\/td>600W<\/td>Direct cross<\/td><\/tr>
        Bourns<\/td>SMBJ400CA<\/td>400V<\/td>600W<\/td>Direct cross<\/td><\/tr>
        Littelfuse<\/td>P6SMB400CA<\/td>400V<\/td>600W<\/td>P6SMB equivalent<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10344"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10344\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10344"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10344"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}