# ESD5425E

**TECH PUBLIC** · ESD And Surge Protection (TVS/ESD) · SOT-23-6

ESD5425E from TECH PUBLIC, in a SOT-23-6. 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 | Protected data line 1 (steering-diode pair to the VCC and GND rails), 0.3pF typical I/O-to-I/O and 0.8pF max to ground, 5V reverse working voltage. |
| 2 | GND | power_in | Ground reference pin, at the bottom rail of the schematic and the anode side of the central TVS diode that every I/O pin is rated against. |
| 3 | I/O2 | passive | Protected data line 2 (steering-diode pair to the VCC and GND rails), 0.3pF typical I/O-to-I/O and 0.8pF max to ground, 5V reverse working voltage. |
| 4 | I/O3 | passive | Protected data line 3 (steering-diode pair to the VCC and GND rails), 0.3pF typical I/O-to-I/O and 0.8pF max to ground, 5V reverse working voltage. |
| 5 | VCC | power_in | Power line protected by the central TVS diode (Vcc-GND), with 300W peak pulse power at 8/20µs and 18V max clamping at IPP=17A. |
| 6 | I/O4 | passive | Protected data line 4 (steering-diode pair to the VCC and GND rails), 0.3pF typical I/O-to-I/O and 0.8pF max to ground, 5V reverse working voltage. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-6 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `ESD5425E`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `esd5425e-etched.step` / `esd5425e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd5425e.step` / `esd5425e.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/8590239523100921856) (4 pp, sha256 `61776eb725e9542a`, retrieved 2026-10-17, 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/esd5425e-datasheet.pdf)