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WSF40N10A

Winsok Semicon · MOSFETs · TO-252

WSF40N10A 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; gate-source voltage is rated at ±20 V maximum, with a typical threshold of 1.5 V (0.9 to 2.5 V) at ID=250uA.
2 D passive Drain, also connected to the exposed tab; drain-source voltage is rated at 100 V, with continuous current of 31 A at TC=25℃ and pulsed current of 55 A.
3 S passive Source; the body diode carries a continuous source current of 12 A, with forward voltage of 1.3 V max at IS=1A.

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 100 V VGS=0V, ID=250uA 2
Gate Threshold Voltage VGS(th) 0.9 1.5 2.5 V VGS=VDS, ID=250uA 2
Static Drain-Source On-Resistance (VGS=10V) RDS(ON) 42 55 mΩ VGS=10V, ID=12A 2
Static Drain-Source On-Resistance (VGS=5.0V) RDS(ON) 58 85 mΩ VGS=5.0V, ID=8A 2
Drain-Source Leakage Current (TJ=25℃) IDSS 10 uA VDS=80V, VGS=0V, TJ=25℃ 2
Drain-Source Leakage Current (TJ=55℃) IDSS 100 uA VDS=80V, VGS=0V, TJ=55℃ 2
Gate-Source Leakage Current IGSS -100 100 nA VGS=±20V, VDS=0V 2
Total Gate Charge (10V) Qg 13.5 22 nC VDS=80V, VGS=10V, ID=12A 2
Continuous Source Current IS 12 A VG=VD=0V, Force Current 2
Diode Forward Voltage VSD 1.3 V VGS=0V, IS=1A, TJ=25℃ 2
Drain-Source Voltage VDS -100 100 V 1
Gate-Source Voltage VGS -20 20 V 1
Continuous Drain Current at TC=25℃ ID 31 A TC=25℃, VGS @ 10V 1
Continuous Drain Current at TC=100℃ ID 22 A TC=100℃, VGS @ 10V 1
Pulsed Drain Current IDM 55 A 1
Total Power Dissipation at TC=25℃ PD 52.1 W TC=25℃ 1
Total Power Dissipation at TA=25℃ PD 2 W TA=25℃ 1
Storage Temperature Range TSTG -55 150 ℃ 1
Operating Junction Temperature Range TJ -55 150 ℃ 1
Thermal Resistance Junction-ambient RθJA 62 ℃/W 1
Thermal Resistance Junction-Case RθJC 2.4 ℃/W 1

CAD (KiCad official)

  • Symbol: WSF40N10A
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: wsf40n10a-etched.step / wsf40n10a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wsf40n10a.step / wsf40n10a.glb are the bare package body.

Provenance

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

  • Datasheet: Winsok Semicon datasheet (6 pp, sha256 405ac8a740d7c3f9, retrieved 2026-10-19, 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