# DYWH-IR26-21C

**TONYU** · Infrared LED Emitters · 1206

DYWH-IR26-21C from TONYU, 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/dywh-ir26-21c/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode (negative terminal, marked with Cathode Mark) of the infrared emitting diode; forward current max 65 mA, reverse voltage max 5 V. |
| 2 | A | passive | Anode (positive terminal, marked with Anode Mark) of the infrared emitting diode; VF 1.2 V typ (1.5 V max) at IF=20 mA, peak forward current 1.0 A at pulse width ≤100 µs and duty ≤1%. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TONYU |
| 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 |
|---|---|---|---|---|---|---|---|
| Forward voltage | VF |  | 1.2 | 1.5 | V | IF=20mA | 4 |
| Forward voltage | VF |  | 1.6 | 2 | V | IF=100mA, Pulse width≤100μs, Duty≤1% | 4 |
| Reverse current | IR |  |  | 10 | μA | VR=5V | 4 |
| Radiant intensity | Ee | 1 | 3.5 |  | mW/sr | IF=20mA | 4 |
| Forward current | IF |  |  | 65 | mA |  | 6 |
| Peak forward current | IFP |  |  | 1 | A | Pulse width≤100μs, Duty≤1% | 6 |
| Reverse voltage | VR |  |  | 5 | V |  | 6 |
| Power dissipation | Pd |  |  | 130 | mW |  | 6 |
| Operation temperature | Tamb | -25 |  | 85 | ℃ |  | 6 |
| Storage temperature | Tstg | -25 |  | 85 | ℃ |  | 6 |
| Soldering temperature | Tsol |  |  | 260 | ℃ | Reflow soldering: 260 ℃ for 5 sec | 6 |
| Forward voltage tolerance | VF | -0.1 |  | 0.1 | V | Forward voltage tolerance range | 4 |
| Radiant intensity tolerance | Ee | -10 |  | 10 | % | Radiant intensity tolerance range | 4 |
| Wavelength tolerance | λp | -1 |  | 1 | nm | Wavelength tolerance range | 4 |
| Radiant intensity | Ee |  | 15 |  | mW/sr | IF=100mA, Pulse width≤100μs, Duty≤1% | 4 |
| Spectral band width | Δλ |  | 45 |  | nm | IF=20mA | 4 |
| Peak wavelength | λp |  | 940 |  | nm | IF=20mA | 4 |
| Viewing angle | 2θ1/2 |  | 20 |  | deg | IF=20mA | 4 |

## CAD (KiCad official)

- Symbol: `DYWH-IR26-21C`
- Footprint: `LED_SMD:LED_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `dywh-ir26-21c-etched.step` / `dywh-ir26-21c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dywh-ir26-21c.step` / `dywh-ir26-21c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TONYU datasheet](docs/dywh-ir26-21c-datasheet.pdf) (11 pp, sha256 `b0cf26f05e48e697`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/dywh-ir26-21c-datasheet.pdf)