component
LMUN2231LT1G
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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownLMUN2231LT1G
LRC · Digital Transistors · SOT-23
LMUN2231LT1G 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 terminal of the NPN bias-resistor transistor, with the internal input resistor R1 = 2.2 kΩ connected to it and an input voltage Vin listed as -10 V to +12 V. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor, with emitter-base cutoff current IEBO specified at VEB = 6.0 V. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor, rated for VCBO = 50 V, VCEO = 50 V and a continuous collector current IC of 100 mA. |
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 |
|---|---|---|---|---|---|---|---|
| DC Current Gain | HFE | 8 | IC = 5.0 mA, VCE = 10 V | 2 | |||
| Collector-Emitter Breakdown Voltage | VBR(CEO) | 50 | V | IC = 2.0 mA, IB = 0 | 2 | ||
| Collector-Base Breakdown Voltage | VBR(CBO) | 50 | V | IC = 10 μA, IE = 0 | 2 | ||
| Collector-Base Cutoff Current | ICBO | 100 | nA | VCB = 50 V, IE = 0 | 2 | ||
| Collector-Emitter Cutoff Current | ICEO | 500 | nA | VCE = 50 V, IB = 0 | 2 | ||
| Emitter-Base Cutoff Current | IEBO | 2.3 | mA | VEB = 6.0 V, IC = 0 | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.25 | V | IC = 10 mA, IB = 5 mA | 2 | ||
| Output Voltage (on) | VOL | 0.2 | V | VCC = 5.0 V, VB = 2.5 V, RL = 1.0KΩ | 2 | ||
| Output Voltage (on) | VOH | 4.9 | V | VCC = 5.0 V, VB = 0.25 V, RL = 1.0KΩ | 2 | ||
| Input Resistor | R1 | 1.5 | 2.9 | KΩ | 2 | ||
| Resistor Ratio | R1/R2 | 0.8 | 1.2 | 2 | |||
| Collector-Base Voltage | VCBO | 50 | V | 1 | |||
| Collector-Emitter Voltage | VCEO | 50 | V | 1 | |||
| Collector Current, Continuous | IC | 100 | mA | 1 | |||
| Total Device Dissipation | PD | 246 | mW | FR−5 Board (Note 1) @ TA = 25ºC | 1 | ||
| Junction and Storage Temperature | TJ,Tstg | -55 | 150 | ºC | 1 | ||
| Input Voltage | Vin | -10 | 12 | V | 1 | ||
| Derate above 25ºC | 1.5 | mW/ºC | Derate above 25ºC | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RΘJA | 508 | ºC/W | Junction-to-Ambient (Note 1) | 1 | ||
| Device nominal resistor R1 | R1 | 2.2 | K | 1 | |||
| Device nominal resistor R2 | R2 | 2.2 | K | 1 |
CAD (KiCad official)
- Symbol:
LMUN2231LT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lmun2231lt1g-etched.step/lmun2231lt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmun2231lt1g.step/lmun2231lt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (5 pp, sha256
71ca714b912db648, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).