# BSS308PE

**UMW** · MOSFETs · SOT-23

BSS308PE from UMW, 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 terminal; the datasheet states the device operates with gate voltages as low as 2.5V and the gate-source voltage is rated at ±20V. |
| 2 | S | passive | SOURCE terminal of the P-channel MOSFET, part of the device rated at VDS = -30V. |
| 3 | D | passive | DRAIN terminal of the P-channel MOSFET; the datasheet rates continuous drain current ID at -2 A at TA=25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOT-23 |
| 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 breakdown voltage | V(BR)DSS | -30 |  |  | V | VGS=0V, ID=-250µA | 2 |
| Gate threshold voltage | VGS(th) | -1 | -1.5 | -2 | V | VDS=VGS, ID=-11µA | 2 |
| Drain-source leakage current | IDSS |  |  | -1 | μA | VDS=-30V,VGS=0V,TJ=25°C | 2 |
| Gate-source leakage current | IGSS |  |  | -100 | nA | VGS=-20V, VDS=0V | 2 |
| Drain-source on-state resistance | RDS(on) |  |  | 90 | mΩ | VGS=-4.5V, ID=-1.7A | 2 |
| Drain-source on-state resistance | RDS(on) |  |  | 70 | mΩ | VGS=-10V, ID=-2A | 2 |
| Input capacitance | Ciss |  | 376 | 500 | pF | VDS=0V, VGS=-15V, f=1MHz | 3 |
| Output capacitance | Coss |  | 196 | 261 | pF | VDS=0V, VGS=-15V, f=1MHz | 3 |
| Reverse transfer capacitance | Crss |  | 12 | 18 | pF | VDS=0V, VGS=-15V, f=1MHz | 3 |
| Diode forward voltage | VSD |  |  | -1.1 | V | VGS=0V, IF=-2V, TJ=25°C | 3 |
| Drain current (TA=25°C) | ID |  |  | -2 | A | TA=25 °C | 1 |
| Drain current (TA=70°C) | ID |  |  | -1.6 | A | TA=70 °C | 1 |
| Pulsed drain current | ID, pulse |  |  | -8 | A | TA=25 °C | 1 |
| Avalanche energy, single pulse | EAS |  |  | -10.7 | mJ | ID=-2 A, RGS=25 Ω | 1 |
| Gate source voltage | VGS | -20 |  | 20 | V |  | 1 |
| Power dissipation | Ptot |  |  | 0.5 | W | TA=25 °C | 1 |
| Operating and storage temperature | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Reverse diode dv/dt | dv/dt |  |  | 6 | kV/µs | ID=-2 A, VDS=-16V; di/dt=-200A/µs, Tj,max=150 °C | 1 |
| Soldering temperature |  |  |  | 260 | °C |  | 1 |
| Thermal resistance, junction - ambient (minimal footprint) | RthJA |  |  | 250 | K/W | minimal footprint | 2 |
| Thermal resistance, junction - ambient (40mm² FR4 PCB) | RthJA |  | 62 |  | K/W | Performed on 40mm² FR4 PCB (footnote 1) | 2 |

## CAD (KiCad official)

- Symbol: `BSS308PE`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bss308pe-etched.step` / `bss308pe-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss308pe.step` / `bss308pe.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](docs/bss308pe-datasheet.pdf) (10 pp, sha256 `7ba470bbb0d70162`, retrieved 2026-11-12, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/bss308pe-datasheet.pdf)