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AO4419

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Alpha Omega Semicon MOSFETs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ao4419-hero.glb ao4419: hero GLB from the etched model (keeps the MPN mark) · Ray 20d ago
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AO4419

Alpha Omega Semicon · MOSFETs · SOIC-8

AO4419 from Alpha Omega Semicon, in a SOIC-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 of the P-channel MOSFET; the datasheet drawing shows pins 1-3 as S, with the device rated for VDS of -30V.
2 S passive Source of the P-channel MOSFET, tied to the other source pins; continuous drain current is -9.7A at TA=25°C.
3 S passive Source of the P-channel MOSFET, tied to the other source pins; pulsed drain current is -70A.
4 G input Gate of the P-channel MOSFET; maximum gate-source voltage is ±20V, with gate threshold of -1.5V to -2.5V.
5 D passive Drain of the P-channel MOSFET, tied to the other drain pins; RDS(ON) is below 20mΩ at VGS=-10V.
6 D passive Drain of the P-channel MOSFET, tied to the other drain pins; drain-source voltage is -30V maximum.
7 D passive Drain of the P-channel MOSFET, tied to the other drain pins; RDS(ON) is below 35mΩ at VGS=-4.5V.
8 D passive Drain of the P-channel MOSFET, tied to the other drain pins; body-diode continuous current is -4A.

Key specifications

Parameter Value
Manufacturer Alpha Omega Semicon
Package SOIC-8
Category Transistors/Thyristors
Pins 8

CAD (KiCad official)

  • Symbol: AO4419
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: ao4419-etched.step / ao4419-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ao4419.step / ao4419.glb are the bare package body.

Provenance

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

  • Datasheet: Alpha Omega Semicon datasheet (6 pp, sha256 1bc7da9e15bbc90a, retrieved 2026-10-09, 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