# LMUN2232LT1G

**LRC** · Digital Transistors · SOT-23

LMUN2232LT1G 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 | Base input pin. Connected through the internal 4.7 kΩ series resistor R1 to the transistor base; a second 4.7 kΩ resistor R2 shunts base-to-emitter. Drive with a logic-level signal to switch the transistor on. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor; also the low side of the internal base-emitter resistor R2. Typically tied to circuit ground in a low-side switch configuration. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor. Rated VCEO = 50 V, VCBO = 50 V, IC = 100 mA continuous. Connect through the load to the positive supply for a low-side switch. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `LMUN2232LT1G`
- `LMUN2232LT1GS-LMUN2232LT1G`

## CAD (KiCad official)

- Symbol: `LMUN2232LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `lmun2232lt1g-etched.step` / `lmun2232lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmun2232lt1g.step` / `lmun2232lt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586183129623511040) (5 pp, sha256 `f9f271a831308dc6`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/lmun2232lt1g-datasheet.pdf)