# SMLD12WBN1W1

**ROHM Semicon** · LED Indication - Discrete · 0603

SMLD12WBN1W1 from ROHM Semicon, in a 0603. 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.


::adom-states{src="/adom/smld12wbn1w1/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode, marked by the cathode index on the package; the white type is taped with the cathode on the sprocket-hole side. |
| 2 | A | passive | Anode; absolute maximum forward current 20 mA (100 mA peak at 1/10 duty, 1 kHz) and reverse voltage 5 V, with typical VF of 2.9 V at IF=5 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | 0603 |
| Category | Optoelectronics |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward current (DC) | IF |  |  | 20 | mA | Ta=25ºC | 1 |
| Peak forward current | IFP |  |  | 100 | mA | *1: 1/10 duty, 1 kHz | 1 |
| Reverse voltage | VR |  |  | 5 | V | Ta=25ºC | 1 |
| Operating temperature | Topr | -40 |  | 100 | ºC |  | 1 |
| Storage temperature | Tstg | -40 |  | 100 | ºC |  | 1 |
| Reverse current | IR |  |  | 10 | μA | VR=5V | 1 |
| Luminous intensity | IV | 56 | 120 |  | mcd | Ta=25ºC | 1 |
| Forward voltage | VF |  | 2.9 |  | V | Ta=25ºC | 1 |

## CAD (KiCad official)

- Symbol: `SMLD12WBN1W1`
- Footprint: `LED_SMD:LED_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `smld12wbn1w1-etched.step` / `smld12wbn1w1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smld12wbn1w1.step` / `smld12wbn1w1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589785002138501120) (10 pp, sha256 `6c857447e2e366ec`, 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/smld12wbn1w1-datasheet.pdf)