# ESD9B5.0ST5G-FS

**FUXINSEMI** · ESD And Surge Protection (TVS/ESD) · SOD-923

ESD9B5.0ST5G-FS from FUXINSEMI, in a SOD-923. 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 | FUXINSEMI |
| Package | SOD-923 |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power (8/20µs pulse) | Ppk |  |  | 96 | W | 8/20µs pulse | 1 |
| Peak Pulse Current (8/20µs pulse) | IPP |  |  | 8 | A | 8/20µs pulse | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Contact) | 1 |
| Operating Temperature Range | TJ | -40 |  | 125 | °C |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| Reverse Working Voltage | VRWM |  |  | 5 | V |  | 2 |
| Breakdown Voltage | VBR | 5.5 |  | 8.5 | V | IT = 1mA | 2 |
| Reverse Leakage Current | IR |  |  | 100 | nA | VRWM = 5V | 2 |
| Clamping Voltage | VC |  |  | 9 | V | IPP = 1A (8 / 20µs pulse) | 2 |
| Clamping Voltage | VC |  |  | 12 | V | IPP = 8A (8 / 20µs pulse) | 2 |
| Junction Capacitance | CJ |  | 15 |  | pF | VR = 0V, f = 1MHz | 2 |

## CAD (KiCad official)

- Symbol: `ESD9B5.0ST5G-FS`
- Footprint: `Diode_SMD:D_SOD-923`
- 3D model: SOD-923 (KiCad packages3D, STEP)
- 3D model files: `esd9b5-0st5g-fs-etched.step` / `esd9b5-0st5g-fs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esd9b5-0st5g-fs.step` / `esd9b5-0st5g-fs.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUXINSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603380552129269760) (3 pp, sha256 `df810fc85b3d3c48`, retrieved 2026-10-17, 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/esd9b5-0st5g-fs-datasheet.pdf)