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LMUN2112LT1G

Public Made by Adom

by adom

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

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LMUN2112LT1G

LRC · Digital Transistors · SOT-23

LMUN2112LT1G from LRC, 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 input of the BRT; the series base resistor R1 for LMUN2112LT1G is 22 kΩ (typical, range 15.4 to 28.6 kΩ), per the device marking and resistor table.
2 EMITTER power_in Emitter, labelled GROUND in the datasheet; the base-emitter resistor R2 for LMUN2112LT1G is 22 kΩ, connected between base and emitter.
3 COLLECTOR output Collector output of the BRT; rated for a collector-emitter voltage VCEO of 50 Vdc and a collector current IC of 100 mAdc maximum.

Key specifications

Parameter Value
Manufacturer LRC
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 Breakdown Voltage V(BR)CBO 50 Vdc IC = 10 µA, IE = 0 3
Collector-Emitter Breakdown Voltage V(BR)CEO 50 Vdc IC = 2.0 mA, IB = 0 3
Collector-Emitter Cutoff Current ICEO 500 nAdc VCE = 50 V, IB = 0 3
Collector-Base Cutoff Current ICBO 100 nAdc 3
Emitter-Base Cutoff Current IEBO 0.1 mAdc VEB = 6.0 V, IC = 0 3
Collector-Emitter Saturation Voltage VCE(sat) 0.25 Vdc IC = 10 mA, IB = 0.3 mA 3
Output Voltage (on) VOL 0.2 Vdc VCC = 5.0 V, VB = 2.5 V, RL = 1.0 kΩ 4
Output Voltage (off) VOH 4.9 Vdc VCC = 5.0 V, VB = 0.5 V, RL = 1.0 kΩ 4
Input Resistor R1 R1 15.4 22 28.6 kΩ 4
Resistor Ratio R1/R2 0.8 1 1.2 - 4
Resistor R2 (base-emitter, nominal per marking table) R2 22 kΩ 2
Total Device Dissipation PD 246 mW TA = 25°C, FR-4 @ Minimum Pad 1
Total Device Dissipation PD 400 mW TA = 25°C, FR-4 @ 1.0 x 1.0 inch Pad 1
Thermal Resistance Junction-to-Ambient RθJA 508 °C/W FR-4 @ Minimum Pad 1
Thermal Resistance Junction-to-Ambient RθJA 311 °C/W FR-4 @ 1.0 x 1.0 inch Pad 1
Thermal Resistance Junction-to-Lead RθJL 174 °C/W FR-4 @ Minimum Pad 1
Thermal Resistance Junction-to-Lead RθJL 208 °C/W FR-4 @ 1.0 x 1.0 inch Pad 1
Collector-Base Voltage VCBO 50 Vdc TA = 25°C 1
Collector-Emitter Voltage VCEO 50 Vdc TA = 25°C 1
Collector Current IC 100 mAdc TA = 25°C 1
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: LMUN2112LT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: lmun2112lt1g-etched.step / lmun2112lt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lmun2112lt1g.step / lmun2112lt1g.glb are the bare package body.

Provenance

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

  • Datasheet: LRC datasheet (16 pp, sha256 af33d5c787db0c28, retrieved 2026-10-17, 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