# SD03CS

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

SD03CS from Wild Goose, 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 | 1 | passive | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Wild Goose |
| 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 Working Voltage | VRWM |  |  | 3.3 | V |  | 2 |
| Breakdown Voltage | VBR | 3.6 | 4.5 | 5.5 | V | Ir=1mA | 2 |
| Leakage Current | ILeak |  |  | 0.2 | μA | VRWM=3.3V | 2 |
| Clamping Voltage | Vc |  | 5.5 | 6.5 | V | Ipp=1A,Tp=8/20μs | 2 |
| Clamping Voltage | Vc |  | 7 | 8 | V | Ipp=20A,Tp=8/20μs | 2 |
| Junction Capacitance | Cj |  | 30 | 40 | pF | Vr=0V,f=1MHz | 2 |
| Peak Pulse Power | PPPM |  |  | 160 | W | tp=8/20μs | 2 |
| Peak Pulse Current | IPPM |  |  | 20 | A | tp=8/20μs | 2 |
| ESD voltage IEC 61000-4-2 (air discharge) | VESD |  |  | 30 | kV | IEC 61000-4-2 air discharge | 2 |
| ESD voltage IEC 61000-4-2 (contact discharge) | VESD |  |  | 30 | kV | IEC 61000-4-2 contact discharge | 2 |
| Maximum lead temperature for soldering | Tt |  |  | 260 | ℃ | during 10s | 2 |
| Storage Temperature Range | Tstg | -55 |  | 150 | ℃ |  | 2 |
| Operating Temperature Range | Top | -40 |  | 125 | ℃ |  | 2 |
| Dynamic Resistance | RDYN |  | 0.1 |  | Ω | TLP=0.2/100ns | 2 |

## CAD (KiCad official)

- Symbol: `SD03CS`
- Footprint: `Diode_SMD:D_SOD-323`
- 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files: `sd03cs-etched.step` / `sd03cs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sd03cs.step` / `sd03cs.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Wild Goose datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590917115362680832) (4 pp, sha256 `fabc6964cd25d95a`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal 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/sd03cs-datasheet.pdf)