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MMDTC114EE

Public Made by Adom

by adom

ST Semtech Digital Transistors, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMDTC114EE

ST Semtech · Digital Transistors · SOT-523

MMDTC114EE from ST Semtech, in a SOT-523. 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 (Input) connects through built-in R1 (7 to 13 kΩ, 10 kΩ typ) to the transistor base, with input voltage rated -10 to +40 V.
2 Emitter passive Emitter (Common) is the common return of the NPN digital transistor and of the R2 bias resistor.
3 Collector passive Collector (Output) is the switched output, rated VCEO 50 V and IC 100 mA maximum.

Key specifications

Parameter Value
Manufacturer ST Semtech
Package SOT-523
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 hFE 30 at VCE = 5 V, IC = 5 mA 2
Collector Base Cutoff Current ICBO 500 nA at VCB = 50 V 2
Emitter Base Cutoff Current IEBO 0.88 mA at VEB = 5 V 2
Collector Emitter Saturation Voltage VCE(sat) 0.3 V at IC = 10 mA, IB = 0.5 mA 2
Input on Voltage VI(on) 3 V at VCE = 0.3 V, IC = 10 mA 2
Input off Voltage VI(off) 0.5 V at VCE = 5 V, IC = 100 µA 2
Input Resistance R1 7 10 13 kΩ 2
Resistance Ratio R2 / R1 0.8 1 1.2 - 2
Collector Emitter Voltage VCEO 50 V 1
Input Voltage VI -10 40 V 1
Collector Current IC 100 mA 1
Power Dissipation Ptot 150 mW 1
Junction Temperature Tj 150 1
Storage Temperature Range Tstg -55 150 1
Thermal Resistance from Junction to Ambient RθJA 833 /W Device mounted on FR-4 substrate PC board, 2oz copper, with minimum recommended pad layout 1

CAD (KiCad official)

  • Symbol: MMDTC114EE
  • Footprint: Package_TO_SOT_SMD:SOT-523
  • 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: mmdtc114ee-etched.step / mmdtc114ee-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmdtc114ee.step / mmdtc114ee.glb are the bare package body.

Provenance

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

  • Datasheet: ST Semtech datasheet (4 pp, sha256 196301eae74c123f, retrieved 2026-10-19, 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