# IR11-21C

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

IR11-21C 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.


::adom-states{src="/adom/ir11-21c/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode (-) of the infrared LED, identified by the cathode mark on the package; reverse voltage is limited to 5 V. |
| 2 | A | passive | Anode (+) of the infrared LED; continuous forward current is limited to 65 mA, with a series resistor required for over-current protection. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Everlight Elec |
| Package | 1206 |
| 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 |
|---|---|---|---|---|---|---|---|
| Radiant Intensity | Ie | 0.5 | 1.6 |  | mW /sr | IF=20mA | 3 |
| Forward Voltage | VF |  | 1.2 | 1.5 | V | IF=20mA | 3 |
| Reverse Current | IR |  |  | 10 | μA | VR=5V | 3 |
| Continuous Forward Current | IF |  |  | 65 | mA |  | 3 |
| Reverse Voltage | VR |  |  | 5 | V |  | 3 |
| Operating Temperature | Topr | -25 |  | 85 |  |  | 3 |
| Storage Temperature | Tstg | -40 |  | 85 |  |  | 3 |
| Soldering Temperature | Tsol |  |  | 260 |  | Soldering time 5 seconds (*1) | 3 |
| Power Dissipation | Pd |  |  | 130 | mW | at or below 25 free air temperature | 3 |

## CAD (KiCad official)

- Symbol: `IR11-21C`
- Footprint: `LED_SMD:LED_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `ir11-21c-etched.step` / `ir11-21c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ir11-21c.step` / `ir11-21c.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/IR11-21C-TR8.pdf) (9 pp, sha256 `3f91001715a74035`, retrieved 2026-10-21, 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/ir11-21c-datasheet.pdf)