# F1

**SY(顺烨)** · IC · SOD-123FL

F1 from SY(顺烨), in a SOD-123FL. 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, the end marked with the polarity band on the body; F1 is rated 50V VRRM/VDC, 35V VRMS, 1.0A average forward current. |
| 2 | A | passive | Anode terminal, the end opposite the polarity band; forward voltage max 1.30V at 1.0A, peak surge 35.0A (8.3ms). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SY(顺烨) |
| Package | SOD-123FL |
| Category |  |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum repetitive peak reverse voltage | VRRM |  |  | 50 | V |  | 1 |
| Maximum RMS voltage | VRMS |  |  | 35 | V |  | 1 |
| Maximum DC blocking voltage | VDC |  |  | 50 | V |  | 1 |
| Maximum average forward rectified current | I(AV) |  |  | 1 | A | at TL=100 C | 1 |
| Peak forward surge current | IFSM |  |  | 35 | A | 8.3 ms single half sine-wave superimposed on rated load | 1 |
| Maximum instantaneous forward voltage | VF |  |  | 1.3 | V | at 1.0 A | 1 |
| Maximum DC reverse current | IR |  |  | 5 | uA | TA=25 C, at rated DC blocking voltage | 1 |
| Maximum reverse recovery time | Trr |  |  | 150 | ns | IF=0.5A, IR=1.0A, Irr=0.25A (Note 1) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | C |  | 1 |
| Soldering temperature |  |  |  | 250 | C | 10 seconds at terminals | 1 |
| Typical junction capacitance | CJ |  | 9 |  | pF | Measured at 1 MHz and applied reverse voltage of 4.0 V DC (Note 2) | 1 |
| Typical thermal resistance | RθJA |  | 85 |  | C/W |  | 1 |

## CAD (KiCad official)

- Symbol: `F1`
- Footprint: `Diode_SMD:D_SOD-123F`
- 3D model: SOD-123FL (KiCad packages3D, STEP)
- 3D model files: `f1-etched.step` / `f1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `f1.step` / `f1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SY(顺烨) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603367479007854592) (2 pp, sha256 `a612d1c60e89d30a`, retrieved 2026-10-17, 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/f1-datasheet.pdf)