component

MMBT8550C

Public Made by Adom

by adom

ST Semtech 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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MMBT8550C

ST Semtech · Bipolar (BJT) · SOT-23

MMBT8550C from ST Semtech, 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 BASE input Base of the PNP transistor; DC current gain hFE of 100 to 250 for MMBT8550C at -VCE = 1 V, -IC = 100 mA, and -VEBO max 6 V.
2 EMITTER passive Emitter of the PNP transistor; -VEBO rated 6 V maximum with respect to the base.
3 COLLECTOR passive Collector of the PNP transistor; -VCBO 40 V, -VCEO 25 V and -IC 1.5 A maximum.

Key specifications

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

CAD (KiCad official)

  • Symbol: MMBT8550C
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt8550c-etched.step / mmbt8550c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt8550c.step / mmbt8550c.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (2 pp, sha256 10af77b17d1c81b8, retrieved 2026-10-09, 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