# SS8050-HF

**Comchip** · Bipolar (BJT) · SOT-23

SS8050-HF from Comchip, 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 | BASE | passive | Base terminal of the SS8050-HF NPN general-purpose transistor; the datasheet gives the emitter-base voltage limit (VEBO, 5 V maximum rating) but no separate base current rating. |
| 2 | EMITTER | passive | Emitter terminal of the SS8050-HF NPN transistor; the emitter-base breakdown voltage V(BR)EBO is at least 5 V at IE=100µA with IC=0. |
| 3 | COLLECTOR | passive | Collector terminal of the SS8050-HF NPN transistor, rated for a collector current IC of 1.5 A with a collector-emitter voltage VCEO of 25 V and a collector-base voltage VCBO of 40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-Base breakdown voltage | V(BR)CBO | 40 |  |  | V | IC=100μA, IE=0 | 1 |
| Collector-Emitter breakdown voltage | V(BR)CEO | 25 |  |  | V | IC=0.1mA, IB=0 | 1 |
| Emitter-Base breakdown voltage | V(BR)EBO | 5 |  |  | V | IE=100μA, IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | 0.1 | µA | VCB=40V, IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 0.1 | µA | VEB=5V, IC=0 | 1 |
| Collector-Emitter saturation voltage | VCE(sat) |  |  | 0.5 | V | IC=800mA, IB=80mA | 1 |
| Base-Emitter saturation voltage | VBE(sat) |  |  | 1.2 | V | IC=800mA, IB=80mA | 1 |
| DC current gain | hFE(1) | 200 |  | 350 |  | VCE=1V, IC=100mA | 1 |
| DC current gain | hFE(2) | 40 |  | 100 |  | VCE=1V, IC=800mA | 1 |
| Collector-Collector max current | VCBO |  |  | 40 | V |  | 1 |
| Collector-Emitter voltage | VCEO |  |  | 25 | V |  | 1 |
| Emitter-Base voltage | VEBO |  |  | 5 | V |  | 1 |
| Collector current | IC |  |  | 1.5 | A |  | 1 |
| Collector power dissipation | PC |  |  | 300 | mW |  | 1 |
| Operation junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |
| Thermal resistance from junction to ambient | RθJA |  | 417 |  | °C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `SS8050-HF`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ss8050-hf-etched.step` / `ss8050-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ss8050-hf.step` / `ss8050-hf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Comchip datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590456129131622400) (5 pp, sha256 `55bb1c69222989c5`, retrieved 2026-10-18, 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/ss8050-hf-datasheet.pdf)