# ESD56151W04

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

ESD56151W04 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 | Pin1 | passive | Terminal 1 of the 1-line bi-directional TVS diode, polarity-independent, with VRWM 4.5V max for ESD56151W04 and electrical parameters measured from pin 1 to pin 2. |
| 2 | Pin2 | passive | Terminal 2 of the 1-line bi-directional TVS diode, polarity-independent, with VRWM 4.5V max for ESD56151W04 and electrical parameters measured from pin 1 to pin 2. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOD-323 |
| Category | Circuit 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 |
|---|---|---|---|---|---|---|---|
| Reverse stand-off voltage | VRWM |  |  | 4.5 | V |  | 3 |
| Breakdown voltage | VBR | 4.7 | 5.3 | 6.4 | V | IBR=1mA | 3 |
| Reverse leakage current | IRM |  |  | 0.1 | μA | at VRWM | 3 |
| Junction capacitance | CJ |  | 280 | 350 | pF | F=1MHz, VR=0V | 3 |
| Clamping voltage at IPP | VCL |  |  | 16 | V | at rated IPP=150A, 8/20μs | 3 |
| Rated peak pulse current | IPP |  |  | 150 | A | 8/20μs, IEC61000-4-5 | 3 |
| Clamping voltage at 16A TLP | VCL |  |  | 6.5 | V | IPP=16A, tp=100ns | 3 |
| Clamping voltage at 8kV ESD | VCL |  |  | 7 | V | VESD = 8kV | 3 |
| Peak Pulse Power | PPK |  |  | 2400 | W | tp=8/20μs, TA=25°C | 1 |
| ESD air discharge | VESD | -30 |  | 30 | kV | IEC61000-4-2 air discharge | 1 |
| ESD contact discharge | VESD | -30 |  | 30 | kV | IEC61000-4-2 contact discharge | 1 |
| Junction Temperature | TJ |  |  | 125 | °C |  | 1 |
| Operating temperature | TOP | -40 |  | 85 | °C |  | 1 |
| Lead temperature | TL |  |  | 260 | °C |  | 1 |
| Storage temperature | TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `ESD56151W04`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `esd56151w04-etched.step` / `esd56151w04-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd56151w04.step` / `esd56151w04.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [UMW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755877162996252672) (7 pp, sha256 `1dfac975e825aad1`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/esd56151w04-datasheet.pdf)