# TPESD05V14T-LC

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-143

TPESD05V14T-LC from TECH PUBLIC, in a SOT-143. 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 | 1 | passive | Common rail at the bottom of the diode bridge, joined to the TVS diode on the pin 1 side; the datasheet gives it no name or function label. |
| 2 | 2 | passive | Protected line connected to the midpoint of one steering-diode pair between pin 4 and pin 1; the datasheet gives it no name. |
| 3 | 3 | passive | Protected line connected to the midpoint of the second steering-diode pair between pin 4 and pin 1; the datasheet gives it no name. |
| 4 | 4 | passive | Common rail at the top of the diode bridge, joined to the TVS diode on the pin 4 side; the datasheet gives it no name or function label. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-143 |
| Category | Circuit Protection |
| Pins | 4 |

## CAD (KiCad official)

- Symbol: `TPESD05V14T-LC`
- Footprint: `Package_TO_SOT_SMD:SOT-143`
- 3D model: SOT-143 (KiCad packages3D, STEP)
- 3D model files: `tpesd05v14t-lc-etched.step` / `tpesd05v14t-lc-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpesd05v14t-lc.step` / `tpesd05v14t-lc.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECH PUBLIC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944662325706752) (1 pp, sha256 `22bf46a19fb730ae`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/tpesd05v14t-lc-datasheet.pdf)