# WSB5508L-2

**WILLSEMI Will Semicon** · Schottky Diodes · SOD-123

WSB5508L-2 from WILLSEMI Will Semicon, in a SOD-123. 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 of the Schottky diode (banded end of the package); VR and VRM are rated 40 V, and average rectified forward current is 1 A. |
| 2 | A | passive | Anode of the Schottky diode; forward voltage is 0.57 V max at IF=1A and peak forward current is 25 A (1 us single pulse). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI Will Semicon |
| Package | SOD-123 |
| Category | Diodes |
| 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 voltage (repetitive peak) | VRM |  |  | 40 | V |  | 1 |
| Reverse voltage (DC) | VR |  |  | 40 | V |  | 1 |
| Average rectified forward current | IO |  |  | 1 | A |  | 1 |
| Peak forward current | IPK |  |  | 25 | A | Note 1: Pulse Width=1us, Single Pulse | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 1 |
| Junction Temperature |  | -55 |  | 150 | °C |  | 1 |
| Forward voltage | VF |  |  | 0.57 | V | IF=1A | 1 |
| Reverse current | IR |  |  | 100 | uA | VR=40V | 1 |
| Junction capacitance | CJ |  |  | 105 | pF | VR=4V, F=1MHz | 1 |
| Thermal resistance, junction to lead | RθJL |  |  | 120 | K/W | Junction to lead | 1 |

## CAD (KiCad official)

- Symbol: `WSB5508L-2`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `wsb5508l-2-etched.step` / `wsb5508l-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wsb5508l-2.step` / `wsb5508l-2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [WILLSEMI Will Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588885013269635072) (3 pp, sha256 `f2ff7450f54a36ce`, retrieved 2026-10-18, 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/wsb5508l-2-datasheet.pdf)