# WSE3088

**Winsok Semicon** · MOSFETs · SOT-89

WSE3088 from Winsok Semicon, in a SOT-89. 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 of the N-channel MOSFET; gate-source voltage is rated ±20 V max, with threshold VGS(th) of 0.5 V min to 1.5 V max at ID=250uA. |
| 2 | D | passive | Drain of the N-channel MOSFET, also connected to the drain tab shown on the package; rated 30 V VDS and 7.0 A continuous at Tc=25℃ (28 A pulsed). |
| 3 | S | passive | Source of the N-channel MOSFET; the body diode runs source to drain, with continuous source current IS of 2 A max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Winsok Semicon |
| Package | SOT-89 |
| 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 | Printed as ±20 V | 1 |
| Continuous Drain Current | ID@Tc=25℃ |  |  | 7 | A | VGS @ 10V, Tc=25℃ | 1 |
| Continuous Drain Current | ID@Tc=70℃ |  |  | 5.5 | A | VGS @ 10V, Tc=70℃ | 1 |
| Pulsed Drain Current | IDM |  |  | 28 | A |  | 1 |
| Single Pulse Avalanche Energy | EAS |  |  | 9 | mJ |  | 1 |
| Avalanche Current | IAS |  |  | 6 | A |  | 1 |
| Total Power Dissipation | PD@TA=25℃ |  |  | 1.8 | W | TA=25℃ | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance Junction-ambient | RθJA |  |  | 70 | ℃/W | Note 1: surface mounted on 1 inch² FR-4 board, 2OZ copper, t≦10sec | 1 |
| Thermal Resistance Junction-Case | RθJC |  |  | 30 | ℃/W | Note 1: surface mounted on 1 inch² FR-4 board, 2OZ copper, t≦10sec | 1 |
| Drain-Source Breakdown Voltage | BVDSS | 30 |  |  | V | VGS=0V, ID=250uA | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 23 | 28 | mΩ | VGS=4.5V, ID=7A | 2 |
| Static Drain-Source On-Resistance | RDS(ON) |  | 31 | 38 | mΩ | VGS=2.5V, ID=6A | 2 |
| Gate Threshold Voltage | VGS(th) | 0.5 | 1 | 1.5 | 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 |
| Gate Resistance | Rg |  | 2.5 | 5 | Ω | VDS=0V, VGS=0V, f=1MHz | 2 |
| Total Gate Charge (4.5V) | Qg |  | 8 | 10.5 | nC | VDS=10V, VGS=4.5V, ID=7A | 2 |
| Turn-On Delay Time | Td(on) |  | 4 | 7.5 | ns | VDD=10V, VGS=10V, RG=6Ω, ID=1A, RL=10Ω | 2 |
| Rise Time | Tr |  | 12.5 | 23 | ns | VDD=10V, VGS=10V, RG=6Ω, ID=1A, RL=10Ω | 2 |
| Turn-Off Delay Time | Td(off) |  | 13.5 | 25 | ns | VDD=10V, VGS=10V, RG=6Ω, ID=1A, RL=10Ω | 2 |
| Fall Time | Tf |  | 2 | 3.5 | ns | VDD=10V, VGS=10V, RG=6Ω, ID=1A, RL=10Ω | 2 |
| Input Capacitance | Ciss |  | 360 | 730 | pF | VDS=10V, VGS=0V, f=1MHz | 2 |
| Output Capacitance | Coss |  | 80 | 112 | pF | VDS=10V, VGS=0V, f=1MHz | 2 |
| Reverse Transfer Capacitance | Crss |  | 55 | 65 | pF | VDS=10V, VGS=0V, f=1MHz | 2 |
| Single Pulse Avalanche Energy | EAS | 7 |  |  | mJ | VDD=25V, L=0.5mH, IAS=6A | 2 |
| Continuous Source Current | IS |  |  | 2 | A | VG=VD=0V, Force Current | 2 |
| Pulsed Source Current | ISM |  |  | 28 | A |  | 2 |
| Diode Forward Voltage | VSD |  |  | 1.3 | V | VGS=0V, IS=3A, TJ=25℃ | 2 |

## CAD (KiCad official)

- Symbol: `WSE3088`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `wse3088-etched.step` / `wse3088-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wse3088.step` / `wse3088.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/8586194541397348352) (5 pp, sha256 `37904dcc49713691`, retrieved 2026-10-16, 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/wse3088-datasheet.pdf)