# LBSS4350SY3T1G

**LRC** · Bipolar (BJT) · SOT-89

LBSS4350SY3T1G from LRC, in a SOT-89. 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 | B | input | Base of the NPN transistor; the datasheet gives VEBO of 6 V maximum and VCBO of 60 V maximum. |
| 2 | C | passive | Collector of the NPN transistor; the datasheet gives VCEO of 50 V, IC of 3 A and ICP of 6 A (pulse) maximum. |
| 3 | E | passive | Emitter of the NPN transistor, shown with the arrow pointing out of the device in the symbol; VEBO is 6 V maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-89 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `LBSS4350SY3T1G`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `lbss4350sy3t1g-etched.step` / `lbss4350sy3t1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lbss4350sy3t1g.step` / `lbss4350sy3t1g.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/8589835031578374144) (6 pp, sha256 `d2fa5becd9117f8f`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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](docs/lbss4350sy3t1g-datasheet.pdf)