BC546BBK

(DIOTEC) · Bipolar Transistors - BJT · TO-92

BC546BBK from (DIOTEC), in a TO-92. 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	C	passive	Collector; VCEO max 65 V (BC546), 45 V (BC547), 30 V (BC548/549); IC max 100 mA dc, 200 mA peak.
2	B	passive	Base; peak base current IBM max 200 mA, and emitter-base voltage VEBO max 5 V.
3	E	passive	Emitter; peak emitter current IEM max 200 mA, VEBO max 5 V with collector open.

Key specifications

Parameter	Value
Manufacturer	(DIOTEC)
Package	TO-92
Category	Triode/MOS Tube/Transistor
Pins	3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part	Material	Colour / plating	Datasheet says	Page
contacts		silver	affect human life or health, user shall contact in advance Diotec Semiconductor AG's Managing Board (Heitersheim, Germany) to	3

CAD (KiCad official)

Symbol: BC546BBK
Footprint: Package_TO_SOT_THT:TO-92_Inline
3D model: TO-92 (KiCad packages3D, STEP)
3D model files: bc546bbk-etched.step / bc546bbk-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bc546bbk.step / bc546bbk.glb are the bare package body.

Provenance

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

Datasheet: (DIOTEC) datasheet (3 pp, sha256 889a83aa8ac5ef11, retrieved 2026-10-28, 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

# BC546BBK

**(DIOTEC)** · Bipolar Transistors - BJT · TO-92

BC546BBK from (DIOTEC), in a TO-92. 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 | C | passive | Collector; VCEO max 65 V (BC546), 45 V (BC547), 30 V (BC548/549); IC max 100 mA dc, 200 mA peak. |
| 2 | B | passive | Base; peak base current IBM max 200 mA, and emitter-base voltage VEBO max 5 V. |
| 3 | E | passive | Emitter; peak emitter current IEM max 200 mA, VEBO max 5 V with collector open. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | (DIOTEC) |
| Package | TO-92 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | silver | affect human life or health, user shall contact in advance Diotec Semiconductor AG's Managing Board (Heitersheim, Germany) to | 3 |

## CAD (KiCad official)

- Symbol: `BC546BBK`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `bc546bbk-etched.step` / `bc546bbk-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc546bbk.step` / `bc546bbk.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [(DIOTEC) datasheet](docs/bc546bbk-datasheet.pdf) (3 pp, sha256 `889a83aa8ac5ef11`, retrieved 2026-10-28, 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/bc546bbk-datasheet.pdf)