# BC846B

**Guangdong Hottech** · Bipolar (BJT) · SOT-23

BC846B from Guangdong Hottech, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | B | input | Base - NPN control terminal; hFE 200-450 (BC846B rank) at VCE=5 V, IC=2 mA; VBE(sat) max 1.1 V at IC=100 mA, IB=5 mA; VEBO max 6 V. |
| 2 | E | passive | Emitter - NPN emitter terminal; IEBO(cut-off) max 0.1 µA at VEB=5 V, IC=0. |
| 3 | C | passive | Collector - NPN collector terminal; IC max 100 mA, VCEO max 65 V, VCBO max 80 V, VCE(sat) max 0.5 V at IC=100 mA IB=5 mA, PC max 200 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Guangdong Hottech |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BC846B`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bc846b-etched.step` / `bc846b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc846b.step` / `bc846b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Guangdong Hottech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586190177488818176) (4 pp, sha256 `4d3e72f410b72a1a`, retrieved 2026-09-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-4-6` (text+vision), consensus `claude-opus-4-7` (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/bc846b-datasheet.pdf)