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MMBTSA812G

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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MMBTSA812G

ST Semtech · Bipolar (BJT) · SOT-23

MMBTSA812G 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 terminal of the PNP transistor, with emitter-base voltage rated -VEBO 6 V maximum.
2 Emitter passive Emitter terminal of the PNP transistor, operating within the absolute maximum ratings of -VCEO 50 V and -IC 150 mA.
3 Collector passive Collector terminal of the PNP transistor, rated -VCBO 60 V, -VCEO 50 V and -IC 150 mA with 300 mW total power dissipation.

Key specifications

Parameter Value
Manufacturer ST Semtech
Package SOT-23
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
DC Current Gain, Group G hFE 200 400 at -VCE = 6 V, -IC = 1 mA (Group G) 2
Collector Cutoff Current -ICBO 0.1 µA at -VCB = 60 V 2
Emitter Cutoff Current -IEBO 0.1 µA at -VEB = 5 V 2
Collector Saturation Voltage -VCE(sat) 0.3 V at -IC = 100 mA, -IB = 10 mA 2
Base Emitter Voltage -VBE 0.58 0.68 V at -VCE = 6 V, -IC = 1 mA 2
Collector Base Voltage -VCBO 60 V 1
Collector Emitter Voltage -VCEO 50 V 1
Emitter Base Voltage -VEBO 6 V 1
Collector Current -IC 150 mA 1
Power Dissipation Ptot 300 mW 1
Junction Temperature Tj 150 ℃ 1
Storage Temperature Range TStg -55 150 ℃ 1
Thermal Resistance from Junction to Ambient RθJA 417 ℃/W Device mounted on FR-4 PC board, minimum recommended pad layout 1

CAD (KiCad official)

  • Symbol: MMBTSA812G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbtsa812g-etched.step / mmbtsa812g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbtsa812g.step / mmbtsa812g.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (5 pp, sha256 9ad4479bdcedce91, retrieved 2026-10-18, 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