{"id":5390,"date":"2026-06-09T11:31:08","date_gmt":"2026-06-09T11:31:08","guid":{"rendered":"https:\/\/materialparts.com\/smbj18a\/"},"modified":"2026-06-09T11:31:08","modified_gmt":"2026-06-09T11:31:08","slug":"smbj18a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/smbj18a\/","title":{"rendered":"SMBJ18A"},"content":{"rendered":"

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

SMBJ18A from Littelfuse is an 18V unidirectional TVS diode, 600W peak pulse power, SMB. ESD\/surge protection for 18V rails.<\/p>\n

\u5de5\u4f5c\u539f\u7406<\/h2>\n

Transient Voltage Suppressor for protecting sensitive electronics. 18V standoff voltage, 20.6V breakdown. 600W peak pulse power at 10\/1000us. Unidirectional for DC rails. Low clamping voltage 29.2V at peak current.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\n\u9634\u6781<\/td>\nBanded end<\/td>\n<\/tr>\n
2<\/td>\n\u9633\u6781<\/td>\nUnbanded<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • DC power rail protection<\/li>\n
  • ESD protection<\/li>\n
  • Surge suppression<\/li>\n
  • Automotive transients<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n
    Mfr<\/th>\nPart<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    onsemi<\/td>\nSMBJ18A-Q<\/td>\nAEC-Q101 version<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview SMBJ18A from Littelfuse is an 18V unidirectional TVS diode, 600W peak pulse power, SMB. ESD\/surge protection for 18V rails. Working Principle Transient Voltage Suppressor for protecting sensitive electronics. 18V standoff voltage, 20.6V breakdown. 600W peak pulse power at 10\/1000us. Unidirectional for DC rails. Low clamping voltage 29.2V at peak current. Pin Description Pin […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[57,13],"tags":[],"chip_brand":[200],"class_list":["post-5390","post","type-post","status-publish","format-standard","hentry","category-insulated-gate-bipolar-transistors-igbt","category-integrated-circuits-ics","chip_brand-littelfuse"],"acf":{"brief_explanation":"18V uni-TVS, 600W, SMB","date_code":"","package_case":"SMB (5.9x3.6x2.3mm)","in_stock":4894,"datasheet":"https:\/\/www.littelfuse.com\/media?resourcetype=datasheet&itemid=1d0e3e6b","price":"$0.18 @ 1ku","product_introduction":"SMBJ18A from Littelfuse is an 18V unidirectional TVS diode, 600W peak pulse power, SMB. ESD\/surge protection for 18V rails.","working_principle":"Transient Voltage Suppressor for protecting sensitive electronics. 18V standoff voltage, 20.6V breakdown. 600W peak pulse power at 10\/1000us. Unidirectional for DC rails. Low clamping voltage 29.2V at peak current.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>Cathode<\/td>Banded end<\/td><\/tr>
    2<\/td>Anode<\/td>Unbanded<\/td><\/tr><\/table>","application_scenarios":"
    • DC power rail protection<\/li>
    • ESD protection<\/li>
    • Surge suppression<\/li>
    • Automotive transients<\/li><\/ul>","alternative_models":"
      Mfr<\/th>Part<\/th>Notes<\/th><\/tr>
      onsemi<\/td>SMBJ18A-Q<\/td>AEC-Q101 version<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5390","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=5390"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5390\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5390"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5390"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5390"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5390"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}