# PESDHC3D12VU

**UMW** · Electrostatic And Surge Protection (TVS/ESD) · SOD-323

PESDHC3D12VU from UMW, in a SOD-323. 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 | K | passive | Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOD-323 |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Unidirectional Peak Pulse Power | PPP |  |  | 500 | W | tp=8/20μs | 2 |
| Maximum Peak Pulse Current | IPP |  |  | 20 | A | tp=8/20μs | 2 |
| Lead Soldering Temperature | TL |  |  | 260 | °C | 10 sec | 2 |
| Operating Temperature | TJ | -55 |  | 125 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 2 |
| Working Voltage | VRWM |  |  | 12 | V |  | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | Lead finish:100% matte Sn(Tin) Mounting position: Any | 1 |

## CAD (KiCad official)

- Symbol: `PESDHC3D12VU`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `pesdhc3d12vu-etched.step` / `pesdhc3d12vu-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pesdhc3d12vu.step` / `pesdhc3d12vu.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](docs/pesdhc3d12vu-datasheet.pdf) (8 pp, sha256 `c45f5b0ec7a30825`, retrieved 2026-10-28, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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/pesdhc3d12vu-datasheet.pdf)