# IR25-21C

**Everlight Elec** · Infrared LED Emitters · 1206

IR25-21C from Everlight Elec, in a 1206. 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 of the infrared emitting diode, identified by the cathode mark on the package drawing and the - in the polarity symbol. |
| 2 | A | passive | Anode (+) terminal of the GaAlAs infrared emitting diode, marked + in the polarity symbol; requires a series resistor for current limiting. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Everlight Elec |
| Package | 1206 |
| Category | Optoelectronics |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `IR25-21C`
- Footprint: `LED_SMD:LED_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `ir25-21c-etched.step` / `ir25-21c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ir25-21c.step` / `ir25-21c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Everlight Elec datasheet](https://en.everlight.com/wp-content/plugins/ItemRelationship/product_files/pdf/IR25-21C-TR8.pdf) (9 pp, sha256 `4402a4e1d2a2b1a7`, 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/ir25-21c-datasheet.pdf)