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MMBTA14G-AE3-R

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UTC(Unisonic Tech) Darlington Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBTA14G-AE3-R

UTC(Unisonic Tech) · Darlington Transistors · SOT-23

MMBTA14G-AE3-R from UTC(Unisonic Tech), 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 E passive Emitter of the NPN Darlington transistor (SOT-23 pin assignment E-B-C for MMBTA14G-AE3-R); VEBO max 10V.
2 B input Base of the NPN Darlington transistor; emitter-base voltage VEBO max 10V and IEBO max 100nA at VEB=10V.
3 C passive Collector of the NPN Darlington transistor; VCES and VCBO max 30V, collector current IC max 500mA.

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
Package SOT-23
Category Transistors
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-Emitter Breakdown Voltage BVCES 30 V IC=100µA, IB=0 2
Collector Cutoff Current ICBO 100 nA VCB=30V, IE=0 2
Emitter Cutoff Current IEBO 100 nA VEB=10V, IC=0 2
DC Current Gain hFE 20000 VCE=5V, IC=100 mA (Note) 2
Collector-Emitter Saturation Voltage VCE(SAT) 1.5 V IC=100mA, IB=0.1mA (Note) 2
Base-Emitter On Voltage VBE(ON) 2 V VCE=5V, IC=100mA (Note) 2
Current Gain Bandwidth Product fT 125 MHz VCE=5V, IC=10mA, f=100MHz 2
Collector-Base Voltage VCBO 30 V TA=25°C 2
Collector-Emitter Voltage VCES 30 V TA=25°C 2
Emitter-Base Voltage VEBO 10 V TA=25°C 2
Collector Dissipation PC 350 mW TC=25C 2
Collector Current IC 500 mA TA=25°C 2
Junction Temperature TJ 150 C 2
Storage Temperature TSTG -40 150 C 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing PC Emitter-Base Voltage VEBO 10 V Collector Dissipation (TC=25C) PC 350 mW 2

CAD (KiCad official)

  • Symbol: MMBTA14G-AE3-R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbta14g-ae3-r-etched.step / mmbta14g-ae3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbta14g-ae3-r.step / mmbta14g-ae3-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (3 pp, sha256 77eb45eb18074faa, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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