component

BF550

Public Made by Adom

by adom

Nexperia Bipolar (BJT), SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs bf550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers bf550: viewers · Ray 1mo ago
bf550-etched.fit.json bf550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bf550-etched.glb bf550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bf550-etched.step bf550: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
bf550.glb Publish 0.1.0 · Ray 1mo ago
bf550.kicad_mod Publish 0.1.0 · Ray 1mo ago
bf550.kicad_sym Publish 0.1.0 · Ray 1mo ago
bf550.lbr Publish 0.1.0 · Ray 1mo ago
bf550.step Publish 0.1.0 · Ray 1mo ago
package.json Publish 0.1.0 · Ray 1mo ago
page.json bf550: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
README.md bf550: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 1mo ago

BF550

Nexperia · Bipolar (BJT) · SOT-23

BF550 from Nexperia, in a SOT-23. 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 PNP BJT. Controls collector current via VBE (typ. -750 mV at IC = -1 mA, VCE = -10 V). Emitter-base breakdown VEBO = -4 V (open collector).
2 E passive Emitter terminal of the PNP BJT. Common reference for VBE and VCE. Emitter cut-off current IEBO max -100 nA at VEB = -3 V.
3 C passive Collector terminal of the PNP BJT. VCBO = -40 V (open emitter), VCEO = -40 V (open base), IC (DC) max -25 mA, total power dissipation 250 mW at Tamb <= 25 C.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-23
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BF550
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bf550-etched.step / bf550-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bf550.step / bf550.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (7 pp, sha256 17214ceb4de5cd8d, 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