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MMBTRA226SS

Public Made by Adom

by adom

ST Semtech Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBTRA226SS

ST Semtech · Digital Transistors · SOT-23

MMBTRA226SS 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 (input) of the PNP digital transistor, connected through R1 = 2.2 kΩ; absolute maximum input voltage is 12 V / -6 V.
2 Emitter passive Emitter (common) terminal, which is also the return end of the R2 = 10 kΩ base-emitter resistor.
3 Collector output Collector (output) of the transistor; absolute maximum output voltage is -50 V and output current is -300 mA.

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 (at -VO = 5 V, -IO = 50 mA) GI 56 at -VO = 5 V, -IO = 50 mA 2
Output Cutoff Current -IO(OFF) 10 µA at -VO = 30 V 2
Input Current -II 3.6 mA at -VI = 5 V 2
Output Voltage -VO(ON) 0.6 V at -IO = 10 mA, -II = 0.5 mA 2
Input Voltage (ON) -VI(ON) 2 V at -VO = 0.3 V, -IO = 20 mA 2
Input Voltage (OFF) -VI(OFF) 0.3 V at -VO = 5 V, -IO = 0.1 mA, MMBTRA225SS~226SS 2
Transition Frequency fT 200 MHz at -VO = 10 V, -IO = 5 mA, f = 100 MHz 2
Output Voltage (absolute maximum) -VO 50 V 1
Input Voltage (absolute maximum, MMBTRA226SS) -VI -6 12 V 1
Output Current (absolute maximum) -IO 300 mA 1
Total Power Dissipation Ptot 200 mW 1
Junction Temperature Tj 150 °C 1
Storage Temperature Range Tstg -55 150 °C 1
Built-in Bias Resistor R1 R1 2.2 KΩ 1
Built-in Bias Resistor R2 R2 10 KΩ 1

CAD (KiCad official)

  • Symbol: MMBTRA226SS
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbtra226ss-etched.step / mmbtra226ss-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbtra226ss.step / mmbtra226ss.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (5 pp, sha256 13e1bab2c031b02e, retrieved 2026-10-18, 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