# S1MFL

**onsemi** · Diodes - General Purpose · SOD-123F

S1MFL from onsemi, in a SOD-123F. 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 | Cathode | passive | Cathode terminal, identified by the band on the package; the part is rated for a repetitive peak reverse voltage of 50 V to 1000 V depending on the variant and a 1 A average forward current. |
| 2 | Anode | passive | Anode terminal, opposite the cathode band; forward current flows from anode to cathode, with a non-repetitive peak forward surge of 30 A at 60 Hz. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOD-123F |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `S1MFL`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123F (KiCad packages3D, STEP)
- 3D model files: `s1mfl-etched.step` / `s1mfl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `s1mfl.step` / `s1mfl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/s1mfl-d.pdf) (5 pp, sha256 `5b7a325a59600321`, retrieved 2026-10-13, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/s1mfl-datasheet.pdf)