# SMF22CA

**LGE** · ESD And Surge Protection (TVS/ESD) · SOD-123

SMF22CA from LGE, 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 | A1 | passive | Bidirectional TVS terminal 1 (SMF22CA, 22 V working voltage, 200 W peak pulse power at 10/1000 μs); the device is symmetric and has no cathode band. |
| 2 | A2 | passive | Bidirectional TVS terminal 2 (SMF22CA, 22 V working voltage, 200 W peak pulse power at 10/1000 μs); the device is symmetric and has no cathode band. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | SOD-123 |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage | VBR | 24.4 |  | 26.9 | V | @IT, IT = 1 mA | 2 |
| Maximum reverse leakage current | IR |  |  | 1 | uA | @VRWM = 22.0 V | 2 |
| Maximum clamping voltage | VC |  |  | 35.5 | V | @IPP | 2 |
| Maximum reverse surge current | IPP |  |  | 5.63 | A |  | 2 |
| Peak power dissipation | PPP |  |  | 200 | W | 10/1000μs waveform | 1 |
| Peak power dissipation | PPP |  |  | 1000 | W | 8/20μs waveform | 1 |
| Power dissipation on infinite heatsink | PD |  |  | 0.4 | W | TL = 75 °C, infinite heatsink | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `SMF22CA`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `smf22ca-etched.step` / `smf22ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf22ca.step` / `smf22ca.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586189797265690624) (3 pp, sha256 `a2ee85aa52e0a4f6`, 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/smf22ca-datasheet.pdf)