component

MMBT9012

Public Made by Adom

by adom

SY(顺烨) Bipolar (BJT), SOT-23. 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
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docs Publish 0.1.0 · Ray 8d ago
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mmbt9012-etched.step mmbt9012: factory component page (tier=lcsc) · Ray 8d ago
mmbt9012-hero.glb mmbt9012: hero GLB from the etched model (keeps the MPN mark) · Ray 8d ago
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MMBT9012

SY(顺烨) · Bipolar (BJT) · SOT-23

MMBT9012 from SY(顺烨), 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 B input Base; bottom-left pin in the simplified outline, with VEBO rating of -5 V and IEBO of -0.1 uA max at VEB=-5V.
2 E passive Emitter; bottom-right pin in the simplified outline, with VEBO rating of -5 V.
3 C passive Collector; single top pin in the simplified outline, rated IC -500 mA, VCBO -40 V and VCEO -25 V.

Key specifications

Parameter Value
Manufacturer SY(顺烨)
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
Collector-base breakdown voltage V(BR)CBO -40 V IC=-0.1mA, IE=0 1
Collector-emitter breakdown voltage V(BR)CEO -25 V IC=-1mA, IB=0 1
Emitter-base breakdown voltage V(BR)EBO -5 V IE=-0.1mA, IC=0 1
Collector cut-off current ICBO -0.1 uA VCB=-40V, IE=0 1
Emitter cut-off current IEBO -0.1 uA VEB=-5V, IC=0 1
DC current gain hFE 120 400 VCE=-1V, IC=-50mA 1
Collector-emitter saturation voltage VCE(sat) -0.6 V IC=-500mA, IB=-50mA 1
Base-emitter saturation voltage VBE(sat) -1.2 V IC=-500mA, IB=-50mA 1
Transition frequency fT 150 MHz VCE=-6V, IC=-20mA, f=30MHz 1
Collector output capacitance Cob 5 pF VCB=-10V, IE=0, f=1MHz 1
Collector-base voltage VCBO -40 V 1
Collector-emitter voltage VCEO -25 V 1
Emitter-base voltage VEBO -5 V 1
Collector current IC -500 mA 1
Collector power dissipation PC 300 mW 1
Junction temperature Tj 150 ℃ 1
Storage temperature Tstg -55 150 ℃ 1
Thermal resistance from junction to ambient RθJA 416 ℃/W 1

CAD (KiCad official)

  • Symbol: MMBT9012
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt9012-etched.step / mmbt9012-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt9012.step / mmbt9012.glb are the bare package body.

Provenance

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

  • Datasheet: SY(顺烨) datasheet (3 pp, sha256 a2123b3255a3ba5a, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-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).

Datasheet PDF