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BCP54

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Shikues Bipolar (BJT), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BCP54

Shikues · Bipolar (BJT) · SOT-223

BCP54 from Shikues, in a SOT-223. 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 input Base of the NPN transistor; Emitter-Base voltage limit is 5 V and peak base current is 0.2 A.
2 C passive Collector of the NPN transistor; continuous collector current is 1 A (peak 1.5 A), with VCEO of 45 V (BCP54), 60 V (BCP55) or 80 V (BCP56).
3 E passive Emitter of the NPN transistor, normally connected to the lowest potential in the circuit.

Key specifications

Parameter Value
Manufacturer Shikues
Package SOT-223
Category Transistors/Thyristors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Collector-Emitter cut-off current ICBO 100 nA VCE=30V, IE=0 1
Collector-emitter saturation voltage VCE(sat) 0.5 V IC=500mA, IB=50mA 1
Collector-Base Voltage (BCP54) VCBO 45 V 1
Collector-Emitter Voltage (BCP54) VCEO 45 V 1
Emitter-Base Voltage VEBO 5 V 1
Collector Current -Continuous IC 1 A 1
Peak Collector Current ICM 1.5 A 1
Peak Base Current IBM 0.2 A 1
Total power consumption Ptot 1.33 W 1
Junction Temperature Tj 150 ℃ 1
Storage Temperature Range Tstg -65 150 ℃ 1
Thermal resistance from junction to environment Rth(j-a) 95 K/W 1
Thermal resistance from junction to solder point Rth(j-s) 13 K/W 1

CAD (KiCad official)

  • Symbol: BCP54
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: bcp54-etched.step / bcp54-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bcp54.step / bcp54.glb are the bare package body.

Provenance

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

  • Datasheet: Shikues datasheet (3 pp, sha256 2e4ad5b250f4fe66, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+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