component
BC817-40W
Public Made by Adomby adom
FUXINSEMI Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBC817-40W
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).