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WD3401

Public Made by Adom

by adom

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

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WD3401

WEIDA · MOSFETs · SOT-23-3

WD3401 from WEIDA, in a SOT-23-3. 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; gate-source voltage limited to ±12 V, with threshold VGS(th) of -0.7 to -1.3 V at ID = -250µA.
2 S passive Source of the P-channel MOSFET; continuous source current IS up to -4.2 A.
3 D passive Drain; drain-source voltage rated -30 V with continuous drain current -4.2 A and pulsed -16 A.

Key specifications

Parameter Value
Manufacturer WEIDA
Package SOT-23-3
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 Breakdown Voltage V(BR)DSS -30 V VGS = 0V, ID = -250µA 2
Zero Gate Voltage Drain Current IDSS -1 μA VDS = -30V, VGS = 0V 2
Gate-Body Leakage Current lGSS -100 100 nA VDS = 0V, VGS = ±12V 2
Gate-Threshold Voltage VGS(th) -0.7 -1 -1.3 V VDS = VGS, ID = -250µA 2
Drain-Source on-Resistance RDS(on) 42 60 mΩ VGS = -10V, ID = -4.2A 2
Drain-Source on-Resistance RDS(on) 52 75 mΩ VGS = -4.5V, ID = -4A 2
Drain-Source on-Resistance RDS(on) 60 90 mΩ VGS = -2.5V, ID = -1A 2
Diode Forward Voltage VSD -1.2 V IS = -4.2A, VGS = 0V 2
Continuous Source Current IS -4.2 A 2
Drain-Source Voltage VDS -30 V 1
Gate-Source Voltage VGS -12 12 V 1
Continuous Drain Current ID -4.2 A TA=25°C 1
Pulsed Drain Current IDM -16 A 1
Power Dissipation PD 1.2 W TA=25°C 1
Operating Junction and Storage Temperature Range TJ ,TSTG -55 150 °C 1
Thermal Resistance from Junction to Ambient RθJA 104 °C/W 1

CAD (KiCad official)

  • Symbol: WD3401
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: wd3401-etched.step / wd3401-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wd3401.step / wd3401.glb are the bare package body.

Provenance

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

  • Datasheet: WEIDA datasheet (5 pp, sha256 159a2895d27816e2, retrieved 2026-10-17, 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