{"id":9665,"date":"2026-07-05T09:06:50","date_gmt":"2026-07-05T09:06:50","guid":{"rendered":"https:\/\/materialparts.com\/ao3415a\/"},"modified":"2026-07-05T09:06:50","modified_gmt":"2026-07-05T09:06:50","slug":"ao3415a","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/ao3415a\/","title":{"rendered":"AO3415A"},"content":{"rendered":"

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

The AO3415A from Alpha & Omega Semiconductor is a -20V P-Channel MOSFET in a SOT-23-3 package. Using advanced trench technology, it achieves low RDS(on) of 41mOhm (max) at VGS=-4.5V with a continuous drain current rating of -5A. The device includes built-in ESD protection and is suitable for load switch and battery protection applications. DigiKey lists this part as Not For New Designs.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
VDS<\/td>\n-20 V<\/td>\n<\/tr>\n
VGS<\/td>\n+-8 V (max)<\/td>\n<\/tr>\n
ID (at 25C)<\/td>\n-5 A<\/td>\n<\/tr>\n
RDS(on) at VGS=-4.5V<\/td>\n41 mOhm (max)<\/td>\n<\/tr>\n
RDS(on) at VGS=-2.5V<\/td>\n53 mOhm (max)<\/td>\n<\/tr>\n
Qg (at VGS=-4.5V)<\/td>\n9.3 nC (typ)<\/td>\n<\/tr>\n
VGS(th)<\/td>\n-0.3 to -0.9 V<\/td>\n<\/tr>\n
\u897f\u65af<\/td>\n751 pF (typ)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-3<\/td>\n<\/tr>\n
TJ Max<\/td>\n150C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Low RDS(on) of 41mOhm at -4.5V for minimal conduction losses<\/li>\n
  • Sub-1V threshold voltage enables operation from 1.8V logic supplies<\/li>\n
  • Built-in ESD protection diode for handling robustness<\/li>\n
  • 5A continuous current rating in a tiny SOT-23-3 package<\/li>\n
  • Advanced trench technology for low gate charge and fast switching<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Battery charge\/discharge path switches<\/li>\n
    • Load switches for power rail gating<\/li>\n
    • DC-DC converter synchronous rectification<\/li>\n
    • \u7535\u6c60\u4fdd\u62a4\u7535\u8def<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The AO3415A from Alpha & Omega Semiconductor is a -20V P-Channel MOSFET in a SOT-23-3 package. Using advanced trench technology, it achieves low RDS(on) of 41mOhm (max) at VGS=-4.5V with a continuous drain current rating of -5A. The device includes built-in ESD protection and is suitable for load switch and battery protection applications. […]<\/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":[13,56],"tags":[942],"chip_brand":[197],"class_list":["post-9665","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","tag-ao3415a","chip_brand-aos"],"acf":{"brief_explanation":"-20V P-CH MOSFET, 41mOhm @ -4.5V, 5A, SOT-23-3, ESD protected, low Vth","date_code":"","package_case":"SOT-23-3 (2.9 x 1.3 x 1.0 mm)","in_stock":4956,"datasheet":"https:\/\/www.aosmd.com\/zh\/products\/mosfets\/p-channel-mosfets-8v-60v\/ao3415a","price":"$0.12 @ 30ku","product_introduction":"The Alpha & Omega Semiconductor AO3415A is a -20V P-Channel enhancement-mode MOSFET fabricated using advanced trench technology. The 41mOhm maximum RDS(on) at VGS=-4.5V ensures low conduction losses in battery disconnect switches, while the sub-1V threshold voltage (-0.3 to -0.9V) allows direct drive from 1.8V logic outputs without level shifters. The built-in ESD protection diode enhances handling robustness during PCB assembly. In a tiny SOT-23-3 package with 1.5W power dissipation, the AO3415A delivers 5A continuous drain current, making it one of the highest current-density P-Channel MOSFETs available in this package. Note: DigiKey lists this part as Not For New Designs; AOS recommends AOSS21115C as a replacement.","working_principle":"The AO3415A is a P-Channel enhancement-mode MOSFET where current flows from source to drain when a negative gate-source voltage exceeds the threshold voltage (VGS(th) = -0.3 to -0.9V). The trench gate structure provides a vertical channel with very short current path length, achieving low RDS(on) in a small die area. The low 9.3nC total gate charge enables fast switching transitions and lower gate drive power. The ESD protection diode clamps gate-source voltage transients to prevent oxide breakdown. The body diode (inherent in the MOSFET structure) provides a forward path from drain to source when the MOSFET is off.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>G<\/td>Input<\/td>Gate (control terminal)<\/td><\/tr>
      2<\/td>S<\/td>Power<\/td>Source (power terminal)<\/td><\/tr>
      3<\/td>D<\/td>Power<\/td>Drain (power terminal)<\/td><\/tr><\/table>","application_scenarios":"
      • Battery charge\/discharge path switch in single-cell Li-ion devices<\/li>
      • Power rail load switch with logic-level gate control from 1.8V MCU<\/li>
      • DC-DC buck converter high-side P-Channel switch<\/li>
      • Over-current protection switch in USB power delivery<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        AOS<\/td>AOSS21115C<\/td>SOT-23-3<\/td>Recommended replacement from AOS<\/td><\/tr>
        Diodes Inc<\/td>DMG3415U-7<\/td>SOT-23-3<\/td>-20V P-CH, pin-compatible<\/td><\/tr>
        Nexperia<\/td>PMV65XP<\/td>SOT-23-3<\/td>-20V P-CH, similar specs<\/td><\/tr>
        onsemi<\/td>NTR4101PT1G<\/td>SOT-23-3<\/td>-20V P-CH MOSFET<\/td><\/tr>
        Vishay<\/td>Si2301DS-T1-E3<\/td>SOT-23-3<\/td>-20V P-CH, industry standard<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9665","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=9665"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9665\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9665"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}