# WSR38P10

**Winsok Semicon** · MOSFETs · TO-220

WSR38P10 from Winsok Semicon, in a TO-220. 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; P-channel gate drive with VGS rated ±20 V and fully enhanced at VGS = -10 V (RDS(ON) 78 mΩ typ at ID = -10 A), threshold -1.2 to -2.5 V. |
| 2 | D | passive | Drain, also connected to the tab; VDS rated -100 V and continuous drain current -35 A at TC = 25 °C. |
| 3 | S | passive | Source; continuous source (body diode) current is limited to -18 A and diode forward voltage is -1.2 V max at IS = -1 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Winsok Semicon |
| Package | TO-220 |
| Category | Triode/MOS Tube/Transistor |
| 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 |  |  | -100 | V |  | 1 |
| Gate-Source Voltage | VGS | -20 |  | 20 | V |  | 1 |
| Continuous Drain Current | ID@TC=25℃ |  |  | -35 | A | -VGS @ -10V | 1 |
| Continuous Drain Current | ID@TC=100℃ |  |  | -16 | A | -VGS @ -10V | 1 |
| Pulsed Drain Current | IDM |  |  | -75 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 157 | mJ |  | 1 |
| Avalanche Current | IAS |  |  | -18.9 | A |  | 1 |
| Total Power Dissipation | PD@TC=25℃ |  |  | 54 | W |  | 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 |  |  | 2.3 | ℃/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -100 |  |  | V | VGS=0V , ID=-250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 78 | 95 | mΩ | VGS=-10V , ID=-10A | 2 |
| Gate Threshold Voltage | VGS(th) | -1.2 | -1.7 | -2.5 | V | VGS=VDS , ID =-250uA | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 1 | uA | VDS=-48V , VGS=0V , TJ=25℃ | 2 |
| Drain-Source Leakage Current | IDSS |  |  | 5 | uA | VDS=-48V , VGS=0V , TJ=55℃ | 2 |
| Gate-Source Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V , VDS=0V | 2 |
| Single Pulse Avalanche Energy | EAS | 100 |  |  | mJ | VDD=-25V , L=0.5mH , IAS=-10A | 2 |
| Continuous Source Current | IS |  |  | -18 | A | VG=VD=0V , Force Current | 2 |
| Diode Forward Voltage | VSD |  |  | -1.2 | V | VGS=0V , IS=-1A , TJ=25℃ | 2 |
| BVDSS Temperature Coefficient | △BVDSS/△TJ |  | -0.021 |  | V/℃ | Reference to 25℃ , ID=-1mA | 2 |
| VGS(th) Temperature Coefficient | △VGS(th) |  | 4.08 |  | mV/℃ | VGS=VDS , ID =-250uA | 2 |
| Forward Transconductance | gfs |  | 24 |  | S | VDS=-10V , ID=-10A | 2 |
| Total Gate Charge (-4.5V) | Qg |  | 44 |  | nC | VDS=-50V , VGS=-10V , ID=-20A | 2 |
| Gate-Source Charge | Qgs |  | 9 |  | nC | VDS=-50V , VGS=-10V , ID=-20A | 2 |
| Gate-Drain Charge | Qgd |  | 6 |  | nC | VDS=-50V , VGS=-10V , ID=-20A | 2 |
| Turn-On Delay Time | Td(on) |  | 12 |  | ns | VDD=-30V , VGS=-10V , RG=6Ω, ID=-10A ,RG=30Ω. | 2 |
| Rise Time | Tr |  | 27 |  | ns | VDD=-30V , VGS=-10V , RG=6Ω, ID=-10A ,RG=30Ω. | 2 |
| Turn-Off Delay Time | Td(off) |  | 79 |  | ns | VDD=-30V , VGS=-10V , RG=6Ω, ID=-10A ,RG=30Ω. | 2 |
| Fall Time | Tf |  | 53 |  | ns | VDD=-30V , VGS=-10V , RG=6Ω, ID=-10A ,RG=30Ω. | 2 |
| Input Capacitance | Ciss |  | 3029 |  | pF | VDS=-30V , VGS=0V , f=1MHz | 2 |
| Output Capacitance | Coss |  | 129 |  | pF | VDS=-30V , VGS=0V , f=1MHz | 2 |
| Reverse Transfer Capacitance | Crss |  | 76 |  | pF | VDS=-30V , VGS=0V , f=1MHz | 2 |

## CAD (KiCad official)

- Symbol: `WSR38P10`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `wsr38p10-etched.step` / `wsr38p10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wsr38p10.step` / `wsr38p10.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Winsok Semicon datasheet](docs/wsr38p10-datasheet.pdf) (5 pp, sha256 `4a52fbe3518dd963`, retrieved 2026-10-23, 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](docs/wsr38p10-datasheet.pdf)