component
MJD31CT4
Public Made by Adomby adom
STMicroelectronics Bipolar (BJT), DPAK. Datasheet-verified pinout, 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
markdownMJD31CT4
STMicroelectronics · Bipolar (BJT) · DPAK
MJD31CT4 from STMicroelectronics, in a DPAK. 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 | B | input | Base control terminal with absolute maximum input current rating of 1 A for controlling collector current. |
| 2 | C | output | Collector terminal with TAB providing thermal connection, rated for maximum 3 A continuous current and 100 V collector-emitter voltage. |
| 3 | E | output | Emitter terminal providing the return current path for this NPN power transistor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DPAK |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MJD31CT4 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: DPAK (KiCad packages3D, STEP)
- 3D model files:
mjd31ct4-etched.step/mjd31ct4-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mjd31ct4.step/mjd31ct4.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (13 pp, sha256
339d9033aceba953, 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).