{"id":5401,"date":"2026-06-09T11:31:29","date_gmt":"2026-06-09T11:31:29","guid":{"rendered":"https:\/\/materialparts.com\/fdn342p\/"},"modified":"2026-06-09T11:31:29","modified_gmt":"2026-06-09T11:31:29","slug":"fdn342p","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/fdn342p\/","title":{"rendered":"FDN342P"},"content":{"rendered":"

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

FDN342P from onsemi is a P-channel 20V 1.7A MOSFET with 70mOhm RDS(on), logic level. SOT-23 for load switching.<\/p>\n

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

P-channel enhancement MOSFET in SOT-23. -20V VDS, -1.7A ID. 70mOhm RDS(on) at VGS=-4.5V. Logic level gate. Popular for high-side load switching and battery disconnect.<\/p>\n

Pin Description<\/h2>\n\n\n\n\n\n
\u9488\u811a<\/th>\n\u540d\u79f0<\/th>\n\u529f\u80fd<\/th>\n<\/tr>\n
1<\/td>\nG<\/td>\n\u5927\u95e8<\/td>\n<\/tr>\n
2<\/td>\nS<\/td>\n\u8d44\u6599\u6765\u6e90<\/td>\n<\/tr>\n
3<\/td>\nD<\/td>\n\u6392\u6c34<\/td>\n<\/tr>\n<\/table>\n

\u5e94\u7528<\/h2>\n
    \n
  • High-side load switch<\/li>\n
  • Battery disconnect<\/li>\n
  • Power management<\/li>\n
  • Battery protection<\/li>\n<\/ul>\n

    Alternative Models<\/h2>\n\n\n\n
    Mfr<\/th>\nPart<\/th>\n\u8bf4\u660e<\/th>\n<\/tr>\n
    \u4e8c\u6781\u7ba1<\/td>\nDMP2305U-7<\/td>\nSimilar P-ch SOT-23<\/td>\n<\/tr>\n<\/table>","protected":false},"excerpt":{"rendered":"

    Product Overview FDN342P from onsemi is a P-channel 20V 1.7A MOSFET with 70mOhm RDS(on), logic level. SOT-23 for load switching. Working Principle P-channel enhancement MOSFET in SOT-23. -20V VDS, -1.7A ID. 70mOhm RDS(on) at VGS=-4.5V. Logic level gate. Popular for high-side load switching and battery disconnect. Pin Description Pin Name Function 1 G Gate 2 […]<\/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":[13,56],"tags":[],"chip_brand":[144],"class_list":["post-5401","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","chip_brand-on"],"acf":{"brief_explanation":"P-ch MOSFET, -20V, -1.7A, 70mOhm, SOT-23","date_code":"","package_case":"SOT-23 (2.9x1.3x1.0mm)","in_stock":8693,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/FDN342P-D.PDF","price":"$0.15 @ 1ku","product_introduction":"FDN342P from onsemi is a P-channel 20V 1.7A MOSFET with 70mOhm RDS(on), logic level. SOT-23 for load switching.","working_principle":"P-channel enhancement MOSFET in SOT-23. -20V VDS, -1.7A ID. 70mOhm RDS(on) at VGS=-4.5V. Logic level gate. Popular for high-side load switching and battery disconnect.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>G<\/td>Gate<\/td><\/tr>
    2<\/td>S<\/td>Source<\/td><\/tr>
    3<\/td>D<\/td>Drain<\/td><\/tr><\/table>","application_scenarios":"
    • High-side load switch<\/li>
    • Battery disconnect<\/li>
    • Power management<\/li>
    • Battery protection<\/li><\/ul>","alternative_models":"
      Mfr<\/th>Part<\/th>Notes<\/th><\/tr>
      Diodes<\/td>DMP2305U-7<\/td>Similar P-ch SOT-23<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5401","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=5401"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/5401\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=5401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=5401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=5401"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=5401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}