component
BCX54
Public Made by Adomby adom
Nexperia Bipolar (BJT), SOT-89. 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
markdownBCX54
Nexperia · Bipolar (BJT) · SOT-89
BCX54 from Nexperia, in a SOT-89. 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 | emitter | passive | Emitter of the NPN transistor; the emitter-base voltage is limited to 5 V (VEBO, open collector) and the collector current to 1 A (IC). |
| 2 | collector | passive | Collector of the NPN transistor, also the exposed die pad for heat transfer; collector-emitter voltage is limited to 45 V (VCEO, open base) and collector current to 1 A (IC, peak 2 A for single pulse tp ≤ 1 ms). |
| 3 | base | passive | Base of the NPN transistor; base current is limited to 0.3 A (IB) and peak base current to 0.3 A (IBM, single pulse tp ≤ 1 ms). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOT-89 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
BCX54 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
bcx54-etched.step/bcx54-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bcx54.step/bcx54.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (23 pp, sha256
36064037c3d57b9e, retrieved 2026-10-10, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).