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AO3402A

Public Made by Adom

by adom

UMW MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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docs Publish 0.1.0 · Ray 25d ago
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ao3402a-etched.glb ao3402a: factory component page (tier=lcsc) · Ray 25d ago
ao3402a-etched.step ao3402a: factory component page (tier=lcsc) · Ray 25d ago
ao3402a-hero.glb ao3402a: hero GLB from the etched model (keeps the MPN mark) · Ray 25d ago
ao3402a-hero.overlay.json Publish 0.1.0 · Ray 25d ago
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ao3402a.step Publish 0.1.0 · Ray 25d ago
package.json Publish 0.1.0 · Ray 25d ago
page.json ao3402a: specified limits as data (metadata.characteristics, 16 rows from the datasheet) · Ray 18d ago
README.md ao3402a: specified limits as data (metadata.characteristics, 16 rows from the datasheet) · Ray 18d ago

AO3402A

UMW · MOSFETs · SOT-23

AO3402A from UMW, in a SOT-23. 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 G input GATE terminal of the N-channel MOSFET; gate-source voltage is rated at ±12 V (VGS), and the device is specified for operation with gate voltage as low as 2.5 V.
2 S passive SOURCE terminal of the N-channel MOSFET, the return path for the drain current (ID continuous 4 A, pulsed 15 A).
3 D passive DRAIN terminal of the N-channel MOSFET; drain-source voltage is rated at 30 V (VDS) with continuous drain current of 4 A.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-23
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Drain-source voltage VDS 30 V 1
Gate-source voltage VGS -12 12 V 1
Continuous drain current ID 4 A 1
Pulsed drain current IDM 15 A Repetitive rating, pulse width limited by junction temperature (note 1) 1
Power dissipation PD 0.35 W TA=25°C 1
Junction temperature TJ 150 °C 1
Storage temperature TSTG -55 150 °C 1
Thermal resistance, junction to ambient RθJA 125 °C/W Surface mounted on FR4 board, t≤10s (note 2) 1
Drain-source breakdown voltage V(BR)DSS 30 V VGS=0V, ID=250µA 2
Zero gate voltage drain current IDSS 1 µA VDS=24V, VGS=0V 2
Gate-body leakage current IGSS -100 100 nA VGS=±12V, VDS=0V 2
Gate threshold voltage VGS(th) 0.8 1.4 V VDS=VGS, ID=250μA 2
Drain-source on-resistance RDS(ON) 52 mΩ VGS=10V, ID=4A 2
Drain-source on-resistance RDS(ON) 65 mΩ VGS=4.5V, ID=3A 2
Drain-source on-resistance RDS(ON) 85 mΩ VGS=2.5V, ID=2A 2
Diode forward voltage VSD 1 V IS=1A, VGS=0V 2

CAD (KiCad official)

  • Symbol: AO3402A
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ao3402a-etched.step / ao3402a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ao3402a.step / ao3402a.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (7 pp, sha256 353a34342a0ef4bc, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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