component

MMBTA55

Public Made by Adom

by adom

hongjiacheng Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 20d ago
viewers mmbta55: viewers · Ray 20d ago
mmbta55-etched.glb mmbta55: factory component page (tier=lcsc) · Ray 20d ago
mmbta55-etched.step mmbta55: factory component page (tier=lcsc) · Ray 20d ago
mmbta55-hero.glb mmbta55: hero GLB from the etched model (keeps the MPN mark) · Ray 20d ago
mmbta55-hero.overlay.json Publish 0.1.0 · Ray 20d ago
mmbta55.glb Publish 0.1.0 · Ray 20d ago
mmbta55.kicad_mod Publish 0.1.0 · Ray 20d ago
mmbta55.kicad_sym Publish 0.1.0 · Ray 20d ago
mmbta55.lbr Publish 0.1.0 · Ray 20d ago
mmbta55.step Publish 0.1.0 · Ray 20d ago
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README.md Publish 0.1.0 · Ray 20d ago

MMBTA55

hongjiacheng · Bipolar (BJT) · SOT-23

MMBTA55 from hongjiacheng, in a SOT-23. 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 passive Base terminal of the PNP transistor; base-emitter saturation voltage is specified at IC=-10mA, VCE=-1.0V with a maximum of -1.2V.
2 E passive Emitter terminal of the PNP transistor; the emitter-base voltage rating VEBO is -4.0V with emitter-base cut-off current IEBO limited to -100nA at VEB=-4.0V.
3 C passive Collector terminal of the PNP transistor; rated for a collector-base voltage VCBO of -60V, collector-emitter voltage VCEO of -60V, and collector current IC of -500mA.

Key specifications

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

CAD (KiCad official)

  • Symbol: MMBTA55
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbta55-etched.step / mmbta55-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbta55.step / mmbta55.glb are the bare package body.

Provenance

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

  • Datasheet: hongjiacheng datasheet (3 pp, sha256 b5c449d097c0b4b4, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF