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WST3423

Public Made by Adom

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

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WST3423

Winsok Semicon · MOSFETs · SOT-23

WST3423 from Winsok Semicon, 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; the datasheet pin drawing shows it at the bottom-left of the SOT-23N, with VGS rated ±12 V maximum and threshold of -0.3 to -1 V at ID=-250uA.
2 S passive Source; the datasheet pin drawing shows it at the bottom-right of the SOT-23N, with continuous source current of -2.4 A maximum.
3 D passive Drain; the datasheet pin drawing shows it as the single pin on the top side of the SOT-23N, with VDS rated -20 V and continuous ID of -2.9 A at 25°C.

Key specifications

Parameter Value
Manufacturer Winsok Semicon
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 -20 V 1
Gate-Source Voltage VGS -12 12 V 1
Continuous Drain Current ID@Tc=25℃ -2.9 A Tc=25℃, VGS @ -4.5V 1
Continuous Drain Current ID@Tc=70℃ -1.9 A Tc=70℃, VGS @ -4.5V 1
Pulsed Drain Current IDM -10 A 1
Total Power Dissipation PD@TA=25℃ 1 W TA=25℃ 1
Storage Temperature Range TSTG -55 150 ℃ 1
Operating Junction Temperature Range TJ -55 150 ℃ 1
Thermal Resistance Junction-ambient RθJA 125 ℃/W 1
Thermal Resistance Junction-Case RθJC 80 ℃/W 1
Drain-Source Breakdown Voltage BVDSS -20 V VGS=0V, ID=-250uA 2
Static Drain-Source On-Resistance RDS(ON) 100 130 mΩ VGS=-4.5V, ID=-2A 2
Static Drain-Source On-Resistance RDS(ON) 145 170 mΩ VGS=-2.5V, ID=-1A 2
Static Drain-Source On-Resistance RDS(ON) 185 220 mΩ VGS=-1.8V, ID=-1.5A 2
Gate Threshold Voltage VGS(th) -0.3 -0.5 -1 V VGS=VDS, ID=-250uA 2
Drain-Source Leakage Current IDSS -1 uA VDS=-16V, VGS=0V, TJ=25℃ 2
Drain-Source Leakage Current IDSS -5 uA VDS=-16V, VGS=0V, TJ=55℃ 2
Gate-Source Leakage Current IGSS -100 100 nA VGS=±8V, VDS=0V 2
Gate Resistance Rg 13.1 26.2 Ω VDS=0V, VGS=0V, f=1MHz 2
Total Gate Charge (-4.5V) Qg 5.6 7.8 nC VDS=-15V, VGS=-4.5V, ID=-2A 2
Gate-Source Charge Qgs 0.72 1 nC VDS=-15V, VGS=-4.5V, ID=-2A 2
Gate-Drain Charge Qgd 1.45 2 nC VDS=-15V, VGS=-4.5V, ID=-2A 2
Turn-On Delay Time Td(on) 4 8 ns VDD=-15V, VGS=-4.5V, RG=3.3Ω, ID=-2A 2
Rise Time Tr 25.6 46 ns VDD=-15V, VGS=-4.5V, RG=3.3Ω, ID=-2A 2
Turn-Off Delay Time Td(off) 26 52 ns VDD=-15V, VGS=-4.5V, RG=3.3Ω, ID=-2A 2
Fall Time Tf 12.4 24.8 ns VDD=-15V, VGS=-4.5V, RG=3.3Ω, ID=-2A 2
Input Capacitance Ciss 332 465 pF VDS=-15V, VGS=0V, f=1MHz 2
Output Capacitance Coss 48 67 pF VDS=-15V, VGS=0V, f=1MHz 2
Reverse Transfer Capacitance Crss 42 59 pF VDS=-15V, VGS=0V, f=1MHz 2
Continuous Source Current IS -2.4 A VG=VD=0V, Force Current 2
Pulsed Source Current ISM -10 A 2
Diode Forward Voltage VSD -1.2 V VGS=0V, IS=-1A, TJ=25℃ 2

CAD (KiCad official)

  • Symbol: WST3423
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: wst3423-etched.step / wst3423-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wst3423.step / wst3423.glb are the bare package body.

Provenance

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

  • Datasheet: Winsok Semicon datasheet (5 pp, sha256 a6775f3cede9c75c, 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