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MMUN2114LT1G

Public Made by Adom

by adom

onsemi Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMUN2114LT1G

onsemi · Digital Transistors · SOT-23

MMUN2114LT1G from onsemi, 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 BASE input Base is the BRT input, with the internal series base resistor R1 (10 k typ) connected here; the device input forward voltage VIN(fwd) is 40 Vdc max and input reverse voltage VIN(rev) is 6 Vdc max.
2 EMITTER power_in Emitter is labeled GROUND on the datasheet and connects to the internal base-emitter resistor R2 (47 k); the datasheet gives no separate electrical limit for this pin.
3 COLLECTOR output Collector is the BRT output, rated for a maximum continuous collector current IC of 100 mAdc and a collector-emitter voltage VCEO of 50 Vdc.

Key specifications

Parameter Value
Manufacturer onsemi
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 Voltage VCBO 50 Vdc 1
Collector−Emitter Voltage VCEO 50 Vdc 1
Collector Current − Continuous IC 100 mAdc 1
Input Forward Voltage VIN(fwd) 40 Vdc 1
Input Reverse Voltage VIN(rev) 6 Vdc 1
Total Device Dissipation (SOT-23) PD 246 mW TA = 25°C; Note 1 (FR−4 @ Minimum Pad) 3
Total Device Dissipation (SOT-23) PD 400 mW TA = 25°C; Note 2 (FR−4 @ 1.0 x 1.0 Inch Pad) 3
Derate above 25°C (SOT-23) 2 mW/°C Note 1 (FR−4 @ Minimum Pad) 3
Derate above 25°C (SOT-23) 3.2 mW/°C Note 2 (FR−4 @ 1.0 x 1.0 Inch Pad) 3
Thermal Resistance, Junction to Ambient (SOT-23) RJA 508 °C/W Note 1 (FR−4 @ Minimum Pad) 3
Thermal Resistance, Junction to Ambient (SOT-23) RJA 311 °C/W Note 2 (FR−4 @ 1.0 x 1.0 Inch Pad) 3
Thermal Resistance, Junction to Lead (SOT-23) RJL 174 °C/W Note 1 (FR−4 @ Minimum Pad) 3
Thermal Resistance, Junction to Lead (SOT-23) RJL 208 °C/W Note 2 (FR−4 @ 1.0 x 1.0 Inch Pad) 3
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 3
Collector−Base Cutoff Current ICBO 100 nAdc VCB = 50 V, IE = 0 4
Collector−Emitter Cutoff Current ICEO 500 nAdc VCE = 50 V, IB = 0 4
Emitter−Base Cutoff Current IEBO 0.2 mAdc VEB = 6.0 V, IC = 0 4
Collector−Base Breakdown Voltage V(BR)CBO 50 Vdc IC = 10 A, IE = 0 4
Collector−Emitter Breakdown Voltage V(BR)CEO 50 Vdc IC = 2.0 mA, IB = 0 4
DC Current Gain hFE 80 140 IC = 5.0 mA, VCE = 10 V 4
Collector Emitter Saturation Voltage VCE(sat) 0.25 Vdc IC = 10 mA, IB = 0.3 mA 4
Input Voltage (off) Vi(off) 0.7 0.5 Vdc VCE = 5.0 V, IC = 100 A 4
Input Voltage (on) Vi(on) 1.4 0.9 Vdc VCE = 0.2 V, IC = 1.0 mA 4
Output Voltage (on) VOL 0.2 Vdc VCC = 5.0 V, VB = 2.5 V, RL = 1.0 k 4
Output Voltage (off) VOH 4.9 Vdc VCC = 5.0 V, VB = 0.5 V, RL = 1.0 k 4
Input Resistor R1 R1 7 10 13 k 4
Resistor Ratio R1/R2 0.17 0.21 0.25 4

CAD (KiCad official)

  • Symbol: MMUN2114LT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmun2114lt1g-etched.step / mmun2114lt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmun2114lt1g.step / mmun2114lt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (12 pp, sha256 8a420fcb2d358d56, retrieved 2026-10-19, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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