# BCX41QTA

**Diodes Incorporated** · Bipolar (BJT) · SOT-23-3

BCX41QTA from Diodes Incorporated, in a SOT-23-3. 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 terminal of the NPN BJT. Controls collector current via base current (IB max 100mA). VBE(SAT) max 1.4V at IC = 300mA, IB = 30mA. |
| 2 | E | passive | Emitter terminal of the NPN BJT. Emitter-Base breakdown voltage BVEBO = 7V min; absolute max VEBO = 5V. |
| 3 | C | passive | Collector terminal of the NPN BJT. Collector-Emitter breakdown voltage BVCEO = 125V min; continuous collector current IC = 800mA, peak pulse ICM = 1A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23-3 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `BCX41QTA`

## CAD (KiCad official)

- Symbol: `BCX41QTA`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `bcx41qta-etched.step` / `bcx41qta-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bcx41qta.step` / `bcx41qta.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602568866774339584) (None pp, sha256 `bd3d287d58ff2215`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bcx41qta-datasheet.pdf)