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MMBTA14W

Public Made by Adom

by adom

ST Semtech Darlington Transistors, SOT-323. 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 mmbta14w: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
viewers mmbta14w: viewers · Ray 1mo ago
mmbta14w-etched.fit.json mmbta14w: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbta14w-etched.glb mmbta14w: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbta14w-etched.step mmbta14w: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 1mo ago
mmbta14w.glb Publish 0.1.0 · Ray 1mo ago
mmbta14w.kicad_mod Publish 0.1.0 · Ray 1mo ago
mmbta14w.kicad_sym Publish 0.1.0 · Ray 1mo ago
mmbta14w.lbr Publish 0.1.0 · Ray 1mo ago
mmbta14w.step Publish 0.1.0 · Ray 1mo ago
package.json mmbta14w: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray 1mo ago
page.json mmbta14w: specified limits as data (metadata.characteristics, 15 rows from the datasheet) · Ray 23d ago
README.md mmbta14w: specified limits as data (metadata.characteristics, 15 rows from the datasheet) · Ray 23d ago

MMBTA14W

ST Semtech · Darlington Transistors · SOT-323

MMBTA14W from ST Semtech, in a SOT-323. 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 - NPN Darlington input; VBE(on) max 2 V at IC = 100 mA, VCE = 5 V; hFE min 10000 at IC = 10 mA.
2 E passive Emitter - NPN Darlington emitter; VEBO max 10 V; IEBO max 100 nA at VEB = 10 V.
3 C passive Collector - NPN Darlington collector; VCES 30 V, IC max 500 mA, VCE(sat) max 1.5 V at IC = 100 mA / IB = 0.1 mA, Ptot max 200 mW.

Key specifications

Parameter Value
Manufacturer ST Semtech
Package SOT-323
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
DC Current Gain (VCE = 5 V, IC = 10 mA) hFE 10000 VCE = 5 V, IC = 10 mA 1
DC Current Gain (VCE = 5 V, IC = 100 mA) hFE 20000 VCE = 5 V, IC = 100 mA 1
Collector Emitter Breakdown Voltage V(BR)CES 30 V IC = 100 µA 1
Collector Cutoff Current ICBO 100 nA VCB = 30 V 1
Emitter Cutoff Current IEBO 100 nA VEB = 10 V 1
Collector Emitter Saturation Voltage VCE(sat) 1.5 V IC = 100 mA, IB = 0.1 mA 1
Base Emitter On Voltage VBE(on) 2 V IC = 100 mA, VCE = 5 V 1
Current Gain Bandwidth Product fT 125 MHz VCE = 5 V, IC = 10 mA, f = 100 MHz 1
Collector Emitter Voltage VCES 30 V Ta = 25℃ 1
Collector Base Voltage VCBO 30 V Ta = 25℃ 1
Emitter Base Voltage VEBO 10 V Ta = 25℃ 1
Collector Current IC 500 mA Ta = 25℃ 1
Power Dissipation Ptot 200 mW Ta = 25℃ 1
Junction Temperature Tj 150 ℃ Ta = 25℃ 1
Storage Temperature Range TStg -55 150 ℃ Ta = 25℃ 1

CAD (KiCad official)

  • Symbol: MMBTA14W
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: mmbta14w-etched.step / mmbta14w-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbta14w.step / mmbta14w.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (1 pp, sha256 3ffd180dac9050a8, retrieved 2026-09-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-sonnet-4-6 (text+vision), consensus claude-opus-4-7 (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