# RS1J

**MDD Microdiode Semiconductor** · Fast Recovery / High Efficiency Diodes · SMA

RS1J from MDD Microdiode Semiconductor, in a SMA. 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 polarity-marked end of the body (bar side of the diode symbol); the part is rated for 600 V repetitive peak reverse voltage (RS1J) and 1.0 A average forward current. |
| 2 | A | passive | Anode, the terminal opposite the polarity band (the triangle side of the diode symbol); the forward voltage is 1.30 V maximum at 1.0 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MDD Microdiode Semiconductor |
| Package | SMA |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `RS1J`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA (KiCad packages3D, STEP)
- 3D model files: `rs1j-etched.step` / `rs1j-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rs1j.step` / `rs1j.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MDD Microdiode Semiconductor datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588935530042576896) (3 pp, sha256 `0e0ed991ed25acf8`, 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/rs1j-datasheet.pdf)