component

SMMBT2222ALT1G

Public Made by Adom

by adom

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

componenttransistors-thyristorssmmbt2222alt1gfactory-2.0.0extractor-text
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SMMBT2222ALT1G

onsemi · Bipolar (BJT) · SOT-23

SMMBT2222ALT1G from onsemi, 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 passive Base terminal of the NPN general-purpose transistor; the datasheet gives the emitter-base voltage rating VEBO as 6.0 Vdc for the SMMBT2222AL (5.0 Vdc for MMBT2222L).
2 EMITTER passive Emitter terminal of the NPN general-purpose transistor; the datasheet gives the emitter-base voltage rating VEBO as 6.0 Vdc for the SMMBT2222AL (5.0 Vdc for MMBT2222L).
3 COLLECTOR passive Collector terminal of the NPN general-purpose transistor; rated VCEO 40 Vdc and VCBO 75 Vdc for the SMMBT2222AL (30 Vdc and 60 Vdc for MMBT2222L), with continuous collector current 600 mA and peak 1100 mA.

Key specifications

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

CAD (KiCad official)

  • Symbol: SMMBT2222ALT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: smmbt2222alt1g-etched.step / smmbt2222alt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smmbt2222alt1g.step / smmbt2222alt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 28b0392b032a9ba7, 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