# TPBC856S

**TECH PUBLIC** · Bipolar (BJT) · SOT-363

TPBC856S from TECH PUBLIC, in a SOT-363. 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 | E1 | passive | Emitter of PNP transistor 1 (arrow on this leg in the circuit diagram); -VEBO max 5 V. |
| 2 | B1 | passive | Base of PNP transistor 1; DC current gain hFE 220 to 475 at -VCE = 5 V, -IC = 2 mA. |
| 3 | C2 | passive | Collector of PNP transistor 2; -VCEO max 65 V, -VCBO max 80 V, -IC max 100 mA. |
| 4 | E2 | passive | Emitter of PNP transistor 2 (arrow on this leg in the circuit diagram); -VEBO max 5 V. |
| 5 | B2 | passive | Base of PNP transistor 2; DC current gain hFE 220 to 475 at -VCE = 5 V, -IC = 2 mA. |
| 6 | C1 | passive | Collector of PNP transistor 1; -VCEO max 65 V, -VCBO max 80 V, -IC max 100 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPBC856S`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `tpbc856s-etched.step` / `tpbc856s-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpbc856s.step` / `tpbc856s.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603080451993055232) (4 pp, sha256 `2ab28365283b1e6e`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/tpbc856s-datasheet.pdf)