# SMF5.0AQ

**Yangzhou Yangjie Elec Tech** · ESD And Surge Protection (TVS/ESD) · SOD-123

SMF5.0AQ from Yangzhou Yangjie Elec Tech, 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 terminal, marked by the polarity band on the uni-directional SMF5.0AQ, which has a 6.40 V to 7.07 V breakdown at 10 mA, 5.0 V working peak reverse voltage and 9.2 V maximum clamping voltage at 21.74 A. |
| 2 | A | passive | Anode terminal at the unbanded end of the uni-directional SMF5.0AQ, which has 200 W peak pulse power on a 10/1000 μs waveform. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOD-123 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `SMF5.0AQ`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123 (KiCad packages3D, STEP)
- 3D model files: `smf5-0aq-etched.step` / `smf5-0aq-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smf5-0aq.step` / `smf5-0aq.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/smf5-0aq-datasheet.pdf) (5 pp, sha256 `ee5ec921bff683ff`, retrieved 2026-10-09, 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/smf5-0aq-datasheet.pdf)