component
MMBTA14G-AE3-R
Public Made by Adomby adom
UTC(Unisonic Tech) Darlington Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, 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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Contents
README
markdownMMBTA14G-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=25C) 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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbta14g-ae3-r.step/mmbta14g-ae3-r.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).