{"id":3376,"date":"2026-06-03T06:42:03","date_gmt":"2026-06-03T06:42:03","guid":{"rendered":"https:\/\/materialparts.com\/irfb4321pbf\/"},"modified":"2026-06-03T06:42:03","modified_gmt":"2026-06-03T06:42:03","slug":"irfb4321pbf","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/irfb4321pbf\/","title":{"rendered":"IRFB4321PBF"},"content":{"rendered":"

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

The IRFB4321PBF from Infineon Technologies is a 150V N-channel StrongIRFET power MOSFET in a TO-220AB through-hole package. With 12m\u03a9 typical RDS(on) at 10V, 85A continuous drain current, and 71nC gate charge, it is optimized for low-frequency switching applications requiring high current capability and low conduction losses.<\/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\n\n\n
VDS<\/td>\n150V<\/td>\n<\/tr>\n
ID (TC=25\u00b0C)<\/td>\n85 A<\/td>\n<\/tr>\n
RDS(on) Typ @ VGS=10V<\/td>\n12 m\u03a9<\/td>\n<\/tr>\n
RDS(on) Max @ VGS=10V<\/td>\n15 m\u03a9<\/td>\n<\/tr>\n
VGS(th)<\/td>\n3.0V to 5.0V<\/td>\n<\/tr>\n
Qg Total Gate Charge<\/td>\n71 nC typ (110 nC max)<\/td>\n<\/tr>\n
Qgd (Miller Charge)<\/td>\n21 nC typ<\/td>\n<\/tr>\n
\u062a\u0628\u062f\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629<\/td>\n350W (TC=25\u00b0C)<\/td>\n<\/tr>\n
R\u03b8JC<\/td>\n0.43\u00b0C\/W<\/td>\n<\/tr>\n
EAS (Single Pulse Avalanche)<\/td>\n120 mJ<\/td>\n<\/tr>\n
Body Diode trr<\/td>\n89 ns typ<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-55 to +175\u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTO-220AB (3-pin, through-hole)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • StrongIRFET family optimized for low RDS(on) and high current<\/li>\n
  • Very low RDS(on): 12m\u03a9 typical<\/li>\n
  • 85A continuous current capability<\/li>\n
  • \u00b130V gate-source voltage rating (enhanced robustness)<\/li>\n
  • Fully characterized avalanche SOA<\/li>\n
  • Improved body diode recovery<\/li>\n
  • Industry-standard TO-220AB package<\/li>\n
  • Lead-free (PbF) termination<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • DC motor and motion control<\/li>\n
    • Battery management systems<\/li>\n
    • Inverters and UPS<\/li>\n
    • \u0645\u062d\u0648\u0644\u0627\u062a DC-DC<\/li>\n
    • Synchronous rectification in SMPS<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The IRFB4321PBF from Infineon Technologies is a 150V N-channel StrongIRFET power MOSFET in a TO-220AB through-hole package. With 12m\u03a9 typical RDS(on) at 10V, 85A continuous drain current, and 71nC gate charge, it is optimized for low-frequency switching applications requiring high current capability and low conduction losses. Key Specifications VDS 150V ID (TC=25\u00b0C) 85 […]<\/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":[173],"class_list":["post-3376","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-mosfets","chip_brand-infineon"],"acf":{"brief_explanation":"150V N-ch MOSFET, 12mOhm, 85A, 71nC Qg, TO-220AB, StrongIRFET","date_code":"","package_case":"TO-220AB (10.67 x 4.82 x 9.02mm, 3-pin, through-hole)","in_stock":850,"datasheet":"https:\/\/www.infineon.com\/dgdl\/irfb4321pbf.pdf","price":"$2.85 @ 1ku","product_introduction":"The IRFB4321PBF from Infineon is a 150V N-channel StrongIRFET MOSFET in TO-220AB with 12m\u03a9 typical RDS(on) at VGS=10V and 85A drain current. 71nC gate charge with 21nC Miller charge. \u00b130V gate voltage rating provides enhanced robustness. 350W power dissipation with 0.43\u00b0C\/W R\u03b8JC. 120mJ single-pulse avalanche rating. PBF suffix denotes lead-free. Optimized for low-frequency high-current applications below 100kHz.","working_principle":"Uses Infineon HEXFET planar technology with vertical DMOS structure. The gate charge of 71nC requires adequate gate drive current for desired switching speed. At 2.5\u03a9 external gate resistance, typical turn-on delay is 18ns with 60ns rise time. The \u00b130V VGS rating is significantly higher than typical \u00b120V, providing additional margin against gate voltage transients. The body diode has 89ns reverse recovery time with 300nC recovery charge, suitable for hard-switched applications but not optimal for high-frequency synchronous rectification. The 120mJ avalanche energy rating provides self-protection against unclamped inductive switching transients.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>Gate<\/td>Input<\/td>Gate control terminal<\/td><\/tr>
      2<\/td>Drain<\/td>Drain<\/td>Drain terminal (connected to tab)<\/td><\/tr>
      3<\/td>Source<\/td>Source<\/td>Source terminal<\/td><\/tr>
      Tab<\/td>Drain<\/td>Drain<\/td>Drain tab (heatsink mounting surface)<\/td><\/tr><\/table>","application_scenarios":"
      • 48V battery management system with 85A switching capability<\/li>
      • DC motor H-bridge driver at 48V\/60V bus voltage<\/li>
      • Low-frequency inverter output stage below 100kHz<\/li>
      • UPS transfer switch with high surge current handling<\/li>
      • Solar charge controller at 48V with low conduction losses<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Infineon<\/td>IRFB4321TRLPBF<\/td>D2PAK<\/td>SMD version of same die<\/td><\/tr>
        onsemi<\/td>FDB86360_F085<\/td>TO-220<\/td>100V, 6.5m\u03a9, lower voltage alternative<\/td><\/tr>
        Infineon<\/td>IRFB4310PBF<\/td>TO-220<\/td>100V, 5.6m\u03a9, lower voltage lower RDS(on)<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3376","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=3376"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/3376\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=3376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=3376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=3376"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=3376"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}