component
TIP31C
Public Made by Adomby adom
STMicroelectronics Bipolar (BJT), TO-220. 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
markdownTIP31C
STMicroelectronics · Bipolar (BJT) · TO-220
TIP31C from STMicroelectronics, in a TO-220. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Base | input | Base terminal of the NPN power transistor; base current IB is rated up to 1 A absolute maximum. |
| 2 | Collector | passive | Collector terminal, internally connected to the metal mounting tab; rated for collector-emitter voltage up to 100 V and collector current up to 3 A (5 A peak). |
| 3 | Emitter | passive | Emitter terminal of the NPN power transistor; emitter-base voltage rated up to 5 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-220 |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base voltage | VCBO | 100 | V | IE = 0 | 3 | ||
| Collector-emitter voltage | VCEO | 100 | V | IB = 0 | 3 | ||
| Emitter-base voltage | VEBO | 5 | V | IC = 0 | 3 | ||
| Collector current | IC | 3 | A | 3 | |||
| Collector peak current | ICM | 5 | A | 3 | |||
| Base current | IB | 1 | A | 3 | |||
| Total dissipation | PTOT | 40 | W | Tcase = 25°C | 3 | ||
| Total dissipation | PTOT | 2 | W | Tamb = 25°C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Max. operating junction temperature | TJ | 150 | °C | 3 | |||
| Collector cut-off current | ICEO | 0.3 | mA | IB = 0, VCE = 60V | 4 | ||
| Emitter cut-off current | IEBO | 1 | mA | IC = 0, VEB = 5V | 4 | ||
| Collector cut-off current | ICES | 0.2 | mA | VBE = 0, VCE = 100V | 4 | ||
| Collector-emitter sustaining voltage | VCEO(sus) | 100 | V | IB = 0, IC = 30mA; pulsed duration = 300 ms, duty cycle ≥ 1.5% | 4 | ||
| Collector-emitter saturation voltage | VCE(sat) | 1.2 | V | IC = 3A, IB = 375mA; pulsed duration = 300 ms, duty cycle ≥ 1.5% | 4 | ||
| Base-emitter voltage | VBE(on) | 1.8 | V | IC = 3A, VCE = 4V | 4 |
CAD (KiCad official)
- Symbol:
TIP31C - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
tip31c-etched.step/tip31c-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tip31c.step/tip31c.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (10 pp, sha256
01acd35a9e756d39, retrieved 2026-09-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).