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WSF40P04

Winsok Semicon · MOSFETs · TO-252

WSF40P04 from Winsok Semicon, in a TO-252. 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; controls the P-channel MOSFET, with VGS rated ±20 V and threshold VGS(th) of -1 to -3 V.
2 D passive Drain, also connected to the exposed tab; VDS rated -40 V and continuous drain current -20 A at TC=25℃.
3 S passive Source; the body diode runs from drain to source with continuous source current IS of -10 A.

Key specifications

Parameter Value
Manufacturer Winsok Semicon
Package TO-252
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 BVDSS -40 V VGS=0V , ID=-250uA 2
Static Drain-Source On-Resistance RDS(ON) 32 42 mΩ VGS=-10V , ID=-12A 2
Static Drain-Source On-Resistance RDS(ON) 52 58 mΩ VGS=-4.5V , ID=-8A 2
Gate Threshold Voltage VGS(th) -1 -2 -3 V VGS=VDS , ID=-250uA 2
Drain-Source Leakage Current IDSS -1 uA VDS=-32V , VGS=0V , TJ=25℃ 2
Drain-Source Leakage Current IDSS -5 uA VDS=-32V , VGS=0V , TJ=55℃ 2
Gate-Source Leakage Current IGSS -100 100 nA VGS=±20V , VDS=0V 2
Continuous Source Current IS -10 A VG=VD=0V , Force Current 2
Pulsed Source Current ISM -20 A 2
Diode Forward Voltage VSD -1 V VGS=0V , IS=-1A , TJ=25℃ 2
Drain-Source Voltage VDS -40 V 1
Gate-Source Voltage VGS -20 20 V 1
Continuous Drain Current ID@TC=25℃ -20 A VGS @ -10V 1
Continuous Drain Current ID@TC=100℃ -16 A VGS @ -10V 1
Pulsed Drain Current IDM -28 A 1
Single Pulse Avalanche Energy EAS 55 mJ 1
Total Power Dissipation PD@TC=25℃ 20 W TC=25℃ 1
Total Power Dissipation PD@TA=25℃ 1.5 W TA=25℃ 1
Total Power Dissipation PD@TA=70℃ 2.1 W TA=70℃ 1
Junction and Storage Temperature Range TJ, TSTG -55 175 ℃ 1
Thermal Resistance Junction-Ambient RθJA 50 ℃/W 1
Thermal Resistance Junction-Ambient RθJA 25 ℃/W t ≤10s 1
Thermal Resistance Junction-Case RθJC 2.5 ℃/W 1

CAD (KiCad official)

  • Symbol: WSF40P04
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: wsf40p04-etched.step / wsf40p04-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wsf40p04.step / wsf40p04.glb are the bare package body.

Provenance

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

  • Datasheet: Winsok Semicon datasheet (7 pp, sha256 3f0922b05b22b149, retrieved 2026-10-18, 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