# CPDH5-5V0U-HF

**Comchip** · ESD And Surge Protection (TVS/ESD) · SOT-553

CPDH5-5V0U-HF from Comchip, in a SOT-553. 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 | Terminal 1 at the bottom left of the SOT-553 circuit diagram, connected to the lower-left diode of the ESD protection array (IEC 61000-4-2 Level 4). |
| 2 | 2 | passive | Terminal 2 at the bottom centre of the SOT-553 circuit diagram, with no diode drawn directly on it. |
| 3 | 3 | passive | Terminal 3 at the bottom right of the SOT-553 circuit diagram, connected to the lower-right diode of the ESD protection array. |
| 4 | 4 | passive | Terminal 4 at the top right of the SOT-553 circuit diagram, connected to the upper-right diode of the ESD protection array. |
| 5 | 5 | passive | Terminal 5 at the top left of the SOT-553 circuit diagram, connected to the upper-left diode of the ESD protection array. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Comchip |
| Package | SOT-553 |
| Category | Circuit Protection |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `CPDH5-5V0U-HF`
- Footprint: `Package_TO_SOT_SMD:SOT-553`
- 3D model: SOT-553 (KiCad packages3D, STEP)
- 3D model files: `cpdh5-5v0u-hf-etched.step` / `cpdh5-5v0u-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cpdh5-5v0u-hf.step` / `cpdh5-5v0u-hf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Comchip datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589810018469523457) (4 pp, sha256 `00dbc742c403fda0`, 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/cpdh5-5v0u-hf-datasheet.pdf)