# TPESDA25-4BP6

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-563

TPESDA25-4BP6 from TECH PUBLIC, in a SOT-563. 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 | I/O1 | passive | ESD/TVS protected line 1 (bi-directional), clamps to ground; 25V max reverse working voltage, ±15kV air / ±8kV contact ESD per IEC 61000-4-2. |
| 2 | GND | power_in | Ground reference for the TVS diode array, connected internally to pin 5. |
| 3 | I/O2 | passive | ESD/TVS protected line 2 (bi-directional), clamps to ground; 25V max reverse working voltage, 5pF max junction capacitance. |
| 4 | I/O3 | passive | ESD/TVS protected line 3 (bi-directional), clamps to ground; 25V max reverse working voltage, 60W peak pulse power (8/20µs). |
| 5 | GND | power_in | Ground reference for the TVS diode array, connected internally to pin 2. |
| 6 | I/O4 | passive | ESD/TVS protected line 4 (bi-directional), clamps to ground; 25V max reverse working voltage, 2A peak pulse current (8/20µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-563 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `TPESDA25-4BP6`
- Footprint: `Package_TO_SOT_SMD:SOT-563`
- 3D model: SOT-563 (KiCad packages3D, STEP)
- 3D model files: `tpesda25-4bp6-etched.step` / `tpesda25-4bp6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpesda25-4bp6.step` / `tpesda25-4bp6.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/8590931205200027648) (4 pp, sha256 `ae96d607b2b60a0c`, retrieved 2026-10-19, 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/tpesda25-4bp6-datasheet.pdf)