# 1SS389

**hongjiacheng** · Schottky Diodes · SOD-523

1SS389 from hongjiacheng, in a SOD-523. 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 terminal on the cathode-band end of the SOD-523 body; reverse voltage VR is 10V (VRRM 10V) and average forward current is up to 0.2A. |
| 2 | A | passive | Anode, the terminal opposite the cathode band; forward voltage is 0.3V max at IF=5mA and 0.5V max at IF=100mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOD-523 |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `1SS389`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523 (KiCad packages3D, STEP)
- 3D model files: `1ss389-etched.step` / `1ss389-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1ss389.step` / `1ss389.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [hongjiacheng datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603186968666644480) (3 pp, sha256 `d8174b5b4506eb98`, retrieved 2026-10-12, 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/1ss389-datasheet.pdf)