component

MJD122T4G

Public Made by Adom

by adom

MSKSEMI Bipolar Transistors - BJT, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistormjd122t4gfactory-2.0.0extractor-text

Verified MJD122T4G

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MJD122T4G · TO-252 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 6-page datasheet
  • ✓distributor: lcsc C22365380, digikey MJD122T4GOSTR-ND, mouser 863-MJD122T4G
  • ✓family: TO-252-2
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-2gpf0yrj/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.5)
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mjd122t4g.kicad_sym✓ mjd122t4g.kicad_mod✓ mjd122t4g.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers mjd122t4g: viewers · Ray 1d ago
mjd122t4g-etched.glb Publish 0.1.0 · Ray 1d ago
mjd122t4g-etched.step mjd122t4g: factory component page (tier=lcsc) · Ray 1d ago
mjd122t4g-hero.glb mjd122t4g: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
mjd122t4g-hero.overlay.json Publish 0.1.0 · Ray 1d ago
mjd122t4g.glb Publish 0.1.0 · Ray 1d ago
mjd122t4g.kicad_mod Publish 0.1.0 · Ray 1d ago
mjd122t4g.kicad_sym Publish 0.1.0 · Ray 1d ago
mjd122t4g.lbr Publish 0.1.0 · Ray 1d ago
mjd122t4g.step Publish 0.1.0 · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 1d ago

MJD122T4G

MSKSEMI · Bipolar Transistors - BJT · TO-252

MJD122T4G from MSKSEMI, in a TO-252. 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 of the NPN transistor, with emitter-base voltage rated at -5 V (VEBO) and base current stated in the test conditions (IB = 16 mA to 80 mA).
2 COLLECTOR passive Collector of the NPN transistor, rated for collector-base voltage -100 V (VCBO) and continuous collector current -6 A (IC).
3 EMITTER passive Emitter of the NPN transistor, with a built-in damper diode between emitter and collector (E-C).

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package TO-252
Category Triode/MOS Tube/Transistor
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 breakdown voltage V(BR)CBO 100 V Ic=1mA,IE=0 3
Collector-emitter breakdown voltage V(BR)CEO 100 V Ic=30mA,IB=0 3
Emitter-base breakdown voltage V(BR)EBO 5 V IE=3mA,IC=0 3
Collector cut-off current ICBO 10 µA VCB=100V,IE=0 3
Collector-emitter cut-off current ICEO 10 µA VCE=50V,IE=0 3
Emitter cut-off current IEBO 2 mA VEB=5V,IC=0 3
DC current gain hFE(2) 1000 12000 VCE=4V,IC=4A 3
DC current gain hFE(3) 100 VCE=4V,IC=8A 3
Collector-emitter saturation voltage VCE(sat)(1) 2 V IC=4A,IB=16mA 3
Collector-emitter saturation voltage VCE(sat)(2) 4 V IC=8A,IB=80mA 3
Base-emitter saturation voltage VBE(sat) 4.5 V IC=8A,IB=80mA 3
Base-emitter voltage VBE 2.8 V VCE=4V,IC=4A 3
Collector output capacitance Cob 200 pF VCB=10V,IE=0,f=0.1MHz 3
Collector-base voltage (absolute maximum) VCBO -100 V 2
Collector-emitter voltage (absolute maximum) VCEO -100 V 2
Emitter-base voltage (absolute maximum) VEBO -5 V 2
Collector current, continuous (absolute maximum) IC -6 A Continuous 2
Collector current, pulse (absolute maximum) ICP -10 A Pulse 2
Collector power dissipation PC 1.25 W 2
Operating junction and storage temperature range TJ,Tstg -55 150 ℃ 2

CAD (KiCad official)

  • Symbol: MJD122T4G
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: mjd122t4g-etched.step / mjd122t4g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mjd122t4g.step / mjd122t4g.glb are the bare package body.

Provenance

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

  • Datasheet: MSKSEMI datasheet (6 pp, sha256 9036cfb63b13d69a, retrieved 2026-11-05, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-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