component
LMUN2111LT1G
Public Made by Adomby adom
LRC Digital 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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README
markdownLMUN2111LT1G
LRC · Digital Transistors · SOT-23
LMUN2111LT1G from LRC, in a SOT-23. 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 | BASE | input | Monolithic bias resistor transistor base input with integrated 10kΩ series base resistor and 10kΩ base-emitter pull-down resistor. |
| 2 | EMITTER | power_in | Emitter; ground reference pin providing low-impedance return path for collector and base currents. |
| 3 | COLLECTOR | output | Collector output; delivers switched collector current up to 100mA at collector-emitter voltage maximum of 50Vdc. |
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 Voltage | VCBO | 50 | Vdc | 1 | |||
| Collector-Emitter Voltage | VCEO | 50 | Vdc | 1 | |||
| Collector Current | IC | 100 | mAdc | 1 | |||
| Total Device Dissipation (FR-4 @ Minimum Pad) | PD | 246 | mW | TA = 25°C, FR-4 @ Minimum Pad (Note 1) | 1 | ||
| Total Device Dissipation (FR-4 @ 1.0 x 1.0 inch Pad) | PD | 400 | mW | TA = 25°C, FR-4 @ 1.0 x 1.0 inch Pad (Note 2) | 1 | ||
| Thermal Resistance Junction-to-Ambient (FR-4 @ Minimum Pad) | RθJA | 508 | °C/W | FR-4 @ Minimum Pad (Note 1) | 1 | ||
| Thermal Resistance Junction-to-Ambient (FR-4 @ 1.0 x 1.0 inch Pad) | RθJA | 311 | °C/W | FR-4 @ 1.0 x 1.0 inch Pad (Note 2) | 1 | ||
| Thermal Resistance Junction-to-Lead (FR-4 @ Minimum Pad) | RθJL | 174 | °C/W | FR-4 @ Minimum Pad (Note 1) | 1 | ||
| Thermal Resistance Junction-to-Lead (FR-4 @ 1.0 x 1.0 inch Pad) | RθJL | 208 | °C/W | FR-4 @ 1.0 x 1.0 inch Pad (Note 2) | 1 | ||
| Junction and Storage Temperature Range | TJ, Tstg | -55 | 150 | °C | 1 | ||
| DC Current Gain | hFE | 35 | 60 | VCE = 10 V, IC = 5.0 mA | 3 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.25 | Vdc | IC = 10 mA, IB = 0.3 mA | 3 | ||
| Collector-Base Cutoff Current | ICBO | 100 | nAdc | 3 | |||
| Collector-Emitter Cutoff Current | ICEO | 500 | nAdc | VCE = 50 V, IB = 0 | 3 | ||
| Emitter-Base Cutoff Current | IEBO | 0.5 | mAdc | VEB = 6.0 V, IC = 0 | 3 | ||
| 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 | ||
| 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 | 7 | 10 | 13 | kΩ | 4 | |
| Resistor Ratio | R1/R2 | 0.8 | 1 | 1.2 | 4 | ||
| Bias Resistor R2 (nominal) | R2 | 10 | kΩ | 2 |
CAD (KiCad official)
- Symbol:
LMUN2111LT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lmun2111lt1g-etched.step/lmun2111lt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmun2111lt1g.step/lmun2111lt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (16 pp, sha256
af33d5c787db0c28, retrieved 2026-09-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).