# WSR45P10

**Winsok Semicon** · MOSFETs · TO-220

WSR45P10 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; controls the channel with VGSS rated ±20 V and threshold VGS(th) of -1 to -3 V at IDS=-250μA. |
| 2 | D | passive | Drain (also connected to the tab); VDSS rated -100 V and continuous drain current -40 A at TC=25°C. |
| 3 | S | passive | Source; diode continuous forward current is -40 A at TC=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Winsok Semicon |
| Package | TO-220 |
| 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 |
|---|---|---|---|---|---|---|---|
| Gate-Source Voltage | VGSS | -20 |  | 20 | V |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 175 | °C |  | 1 |
| Drain-Source Voltage | VDSS |  |  | -100 | V |  | 1 |
| Maximum Junction Temperature | TJ |  |  | 175 | °C |  | 1 |
| Diode Continuous Forward Current | IS |  |  | -40 | A | TC=25°C; mounted on large heat sink | 1 |
| Pulsed Drain Current | IDM |  |  | -120 | A | Repetitive rating; pulse width limited by junction temperature | 1 |
| Continuous Drain Current | ID |  |  | -40 | A | TC=25°C | 1 |
| Continuous Drain Current | ID |  |  | -26 | A | TC=100°C | 1 |
| Maximum Power Dissipation | PD |  |  | 136 | W | TC=25°C | 1 |
| Maximum Power Dissipation | PD |  |  | 68 | W | TC=100°C | 1 |
| Avalanche Energy, Single Pulsed | EAS |  |  | 308 | mJ | L=0.5mH; VD=-80V (note ***) | 1 |
| Thermal Resistance-Junction to Case | RθJC |  |  | 1.1 | °C/W |  | 1 |
| Thermal Resistance-Junction to Ambient | RθJA |  |  | 62.5 | °C/W |  | 1 |
| Drain-Source Breakdown Voltage | BVDSS | -100 |  |  | V | VGS=0V, IDS=-250μA | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -1 | μA | VDS=-100 V, VGS=0V | 2 |
| Zero Gate Voltage Drain Current | IDSS |  |  | -10 | μA | TJ=85°C | 2 |
| Gate Threshold Voltage | VGS(th) | -1 | -2 | -3 | V | VDS=VGS, IDS=-250μA | 2 |
| Gate Leakage Current | IGSS | -100 |  | 100 | nA | VGS=±20V, VDS=0V | 2 |
| Drain-Source On-state Resistance | RDS(ON) |  | 44 | 55 | mΩ | VGS=-10V, IDS=-20A | 2 |
| Drain-Source On-state Resistance | RDS(ON) |  | 47 | 58.5 | mΩ | VGS=-4.5V, IDS=-20A | 2 |
| Diode Forward Voltage | VSD |  | -0.8 | -1.2 | V | ISD=-20A, VGS=0V | 2 |

## CAD (KiCad official)

- Symbol: `WSR45P10`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files: `wsr45p10-etched.step` / `wsr45p10-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wsr45p10.step` / `wsr45p10.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Winsok Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588887659636789248) (10 pp, sha256 `0af1078cd6c34af0`, retrieved 2026-10-21, 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/wsr45p10-datasheet.pdf)