# RM3A

**EIC Semicon** · Diodes - General Purpose · DO-201AD

RM3A from EIC Semicon, in a DO-201AD. 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 axial lead at the color-band end of the DO-201AD body (lead length 1.00 in (25.4 mm) min). |
| 2 | A | passive | Anode, the axial lead at the end opposite the color band (lead length 1.00 in (25.4 mm) min), rated 2.5 A average forward current. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | EIC Semicon |
| Package | DO-201AD |
| Category | Diodes |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `RM3A`
- Footprint: `Diode_THT:D_DO-201AD_P15.24mm_Horizontal`
- 3D model: DO-201AD (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [EIC Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590414448843661312) (2 pp, sha256 `edb25cfd7b071a1c`, retrieved 2026-10-13, 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/rm3a-datasheet.pdf)