component
MMBTRA226SS
Public Made by Adomby adom
ST Semtech Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownMMBTRA226SS
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbtra226ss.step/mmbtra226ss.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).