component
MMBTSA812G
Public Made by Adomby adom
ST Semtech Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBTSA812G
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbtsa812g.step/mmbtsa812g.glbare 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, primaryclaude-haiku-5-5(text), consensusclaude-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).