# BCX 42 E6327

**Infineon Technologies** · Bipolar (BJT) · SOT-23-3

BCX 42 E6327 from Infineon Technologies, in a SOT-23-3. 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 | B | passive | Base terminal; the datasheet limits base current to IB 100 mA continuous and IBM 200 mA peak. |
| 2 | E | passive | Emitter terminal; the emitter-base voltage is limited to VEBO 5 V, and the emitter-base breakdown voltage is specified as V(BR)EBO min. 5 V. |
| 3 | C | passive | Collector terminal; the datasheet limits collector-emitter voltage to VCEO 125 V, collector-base voltage to VCBO 125 V, and collector current to IC 800 mA (peak ICM 1 A). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOT-23-3 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BCX 42 E6327`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `bcx-42-e6327-etched.step` / `bcx-42-e6327-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bcx-42-e6327.step` / `bcx-42-e6327.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912407003467776) (7 pp, sha256 `4747f4599952a389`, retrieved 2026-10-09, 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/bcx-42-e6327-datasheet.pdf)