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BC817-40W
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FUXINSEMI Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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BC817-40W
FUXINSEMI · Bipolar (BJT) · SOT-323
BC817-40W from FUXINSEMI, in a SOT-323. 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 | BASE | input | Base of the NPN transistor; the datasheet gives V(BR)EBO of 5 V minimum (IE=1µA) and VEBO of 5 V maximum. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; the datasheet gives a maximum continuous collector current of 0.5 A. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; the datasheet gives VCEO of 45 V and VCBO of 50 V maximum, with 0.5 A continuous current. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SOT-323 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
BC817-40W - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
bc817-40w-etched.step/bc817-40w-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc817-40w.step/bc817-40w.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FUXINSEMI datasheet (3 pp, sha256
482974197c13133e, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-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).
# BC817-40W
**FUXINSEMI** · Bipolar (BJT) · SOT-323
BC817-40W from FUXINSEMI, in a SOT-323. 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 | BASE | input | Base of the NPN transistor; the datasheet gives V(BR)EBO of 5 V minimum (IE=1µA) and VEBO of 5 V maximum. |
| 2 | EMITTER | passive | Emitter of the NPN transistor; the datasheet gives a maximum continuous collector current of 0.5 A. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; the datasheet gives VCEO of 45 V and VCBO of 50 V maximum, with 0.5 A continuous current. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SOT-323 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `BC817-40W`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `bc817-40w-etched.step` / `bc817-40w-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bc817-40w.step` / `bc817-40w.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [FUXINSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234427172421632) (3 pp, sha256 `482974197c13133e`, retrieved 2026-10-09, 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/bc817-40w-datasheet.pdf)