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WST3407

Winsok Semicon · MOSFETs · SOT-23-3L

WST3407 from Winsok Semicon, in a SOT-23-3L. 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 pin-configuration drawing labels the bottom-left lead G, and the gate-source voltage is rated ±20 V.
2 S passive Source; the pin-configuration drawing labels the bottom-right lead S, with continuous source current of -2 A (IS) and drain-source voltage rating of -30 V.
3 D passive Drain; the pin-configuration drawing labels the single top lead D, with a drain-source voltage rating of -30 V and continuous drain current of -5.8 A at steady state.

Key specifications

Parameter Value
Manufacturer Winsok Semicon
Package SOT-23-3L
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 -20 20 V 1
Continuous Drain Current ID@TC=25℃ -6.3 A VGS @ -10V, 10s 1
Continuous Drain Current ID@TC=25℃ -5.8 A VGS @ -10V, steady state 1
Continuous Drain Current ID@TC=70℃ -4.5 A VGS @ -10V, 10s 1
Continuous Drain Current ID@TC=70℃ -3.5 A VGS @ -10V, steady state 1
Pulsed Drain Current IDM -20 A 1
Total Power Dissipation PD@TA=25℃ 1.32 W 10s 1
Total Power Dissipation PD@TA=25℃ 1 W steady state 1
Total Power Dissipation PD@TA=70℃ 0.84 W 10s 1
Total Power Dissipation PD@TA=70℃ 0.64 W steady state 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-Ambient RθJA 95 ℃/W t ≤10s 1
Thermal Resistance Junction-Case RθJC 80 ℃/W 1
Drain-Source Breakdown Voltage BVDSS -30 V VGS=0V, ID=-250uA 2
Static Drain-Source On-Resistance RDS(ON) 41 52 mΩ VGS=-10V, ID=-3A 2
Static Drain-Source On-Resistance RDS(ON) 62 90 mΩ VGS=-4.5V, ID=-2A 2
Gate Threshold Voltage VGS(th) -1.2 -1.8 -2.5 V VGS=VDS, ID=-250uA 2
Drain-Source Leakage Current IDSS -1 uA VDS=-24V, VGS=0V, TJ=25℃ 2
Drain-Source Leakage Current IDSS -5 uA VDS=-24V, VGS=0V, TJ=55℃ 2
Gate-Source Leakage Current IGSS -100 100 nA VGS=±20V, VDS=0V 2
Total Gate Charge (-4.5V) Qg 6.4 9 nC VDS=-15V, VGS=-4.5V, ID=-3A 2
Gate-Source Charge Qgs 2.3 3.2 nC VDS=-15V, VGS=-4.5V, ID=-3A 2
Gate-Drain Charge Qgd 1.9 2.7 nC VDS=-15V, VGS=-4.5V, ID=-3A 2
Turn-On Delay Time Td(on) 2.8 5.6 ns VDD=-15V, VGS=-10V, RG=3.3Ω, ID=-3A 2
Rise Time Tr 8.4 15.1 ns VDD=-15V, VGS=-10V, RG=3.3Ω, ID=-3A 2
Turn-Off Delay Time Td(off) 39 78 ns VDD=-15V, VGS=-10V, RG=3.3Ω, ID=-3A 2
Fall Time Tf 6 12 ns VDD=-15V, VGS=-10V, RG=3.3Ω, ID=-3A 2
Input Capacitance Ciss 583 816 pF VDS=-15V, VGS=0V, f=1MHz 2
Output Capacitance Coss 100 140 pF VDS=-15V, VGS=0V, f=1MHz 2
Reverse Transfer Capacitance Crss 80 112 pF VDS=-15V, VGS=0V, f=1MHz 2
Continuous Source Current IS -2 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
Reverse Recovery Time trr 11 nS IF=-3A, dI/dt=100A/µs, TJ=25℃ 2

CAD (KiCad official)

  • Symbol: WST3407
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: wst3407-etched.step / wst3407-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); wst3407.step / wst3407.glb are the bare package body.

Provenance

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

  • Datasheet: Winsok Semicon datasheet (5 pp, sha256 8ea6e1d2d90c6494, 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