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AO4421-VB

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VBsemi Elec MOSFETs, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AO4421-VB

VBsemi Elec · MOSFETs · SO-8

AO4421-VB from VBsemi Elec, in a SO-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 S passive Source terminal of the P-channel MOSFET (pin 1 of SO-8), tied to pins 2 and 3; continuous source current (diode conduction) IS is -4.5 A.
2 S passive Source terminal of the P-channel MOSFET (pin 2 of SO-8), tied to pins 1 and 3; continuous source current (diode conduction) IS is -4.5 A.
3 S passive Source terminal of the P-channel MOSFET (pin 3 of SO-8), tied to pins 1 and 2; continuous source current (diode conduction) IS is -4.5 A.
4 G input Gate terminal of the P-channel MOSFET with a maximum gate-source voltage VGS of ±20 V and gate-source leakage up to ±100 nA.
5 D passive Drain terminal of the P-channel MOSFET (pin 5 of SO-8), tied to pins 6, 7 and 8; drain-source voltage VDS is -60 V and continuous drain current ID is -8 A at TC = 25 °C.
6 D passive Drain terminal of the P-channel MOSFET (pin 6 of SO-8), tied to pins 5, 7 and 8; drain-source voltage VDS is -60 V and continuous drain current ID is -8 A at TC = 25 °C.
7 D passive Drain terminal of the P-channel MOSFET (pin 7 of SO-8), tied to pins 5, 6 and 8; drain-source voltage VDS is -60 V and continuous drain current ID is -8 A at TC = 25 °C.
8 D passive Drain terminal of the P-channel MOSFET (pin 8 of SO-8), tied to pins 5, 6 and 7; drain-source voltage VDS is -60 V and continuous drain current ID is -8 A at TC = 25 °C.

Key specifications

Parameter Value
Manufacturer VBsemi Elec
Package SO-8
Category Transistors
Pins 8

CAD (KiCad official)

  • Symbol: AO4421-VB
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SO-8 (KiCad packages3D, STEP)
  • 3D model files: ao4421-vb-etched.step / ao4421-vb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ao4421-vb.step / ao4421-vb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: VBsemi Elec datasheet (9 pp, sha256 a348b89c8593589f, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF