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MJD31CT4

Public Made by Adom

by adom

STMicroelectronics Bipolar (BJT), DPAK. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs mjd31ct4: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
viewers mjd31ct4: viewers · Ray 1mo ago
mjd31ct4-etched.fit.json mjd31ct4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mjd31ct4-etched.glb mjd31ct4: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
mjd31ct4-etched.step mjd31ct4: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
mjd31ct4.glb Publish 0.1.0 · Ray 1mo ago
mjd31ct4.kicad_mod Publish 0.1.0 · Ray 1mo ago
mjd31ct4.kicad_sym Publish 0.1.0 · Ray 1mo ago
mjd31ct4.lbr Publish 0.1.0 · Ray 1mo ago
mjd31ct4.step Publish 0.1.0 · Ray 1mo ago
package.json mjd31ct4: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
page.json mjd31ct4: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray 23d ago
README.md Initial commit: component/mjd31ct4 · Ray 1mo ago

MJD31CT4

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mjd31ct4.step / mjd31ct4.glb are 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, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF