# YLED0402YG

**YONGYUTAI** · LED Indication - Discrete · 0402

YLED0402YG from YONGYUTAI, in a 0402. 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/yled0402yg/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode terminal marked ② in the package drawing; reverse voltage must not exceed 5 V, and the part is not designed for reverse operation. |
| 2 | A | passive | Anode (+) terminal marked ① in the package drawing; drive at the rated DC forward current of 20 mA (60 mA peak at 1/10 duty, 0.1 ms) through a series current-limiting resistor. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YONGYUTAI |
| Package | 0402 |
| 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 |
|---|---|---|---|---|---|---|---|
| Luminous intensity | IV | 24 |  | 85 | mcd | IF = 20mA | 2 |
| Forward voltage | VF | 1.8 |  | 2.4 | V | IF = 20mA | 2 |
| Dominant wavelength | λd | 568 |  | 576 | nm | IF = 20mA | 2 |
| Power dissipation | Pd |  |  | 60 | mW |  | 2 |
| Peak forward current | IFP |  |  | 60 | mA | 1/10 duty cycle, 0.1 ms pulse width | 2 |
| DC forward current | IF |  |  | 20 | mA |  | 2 |
| Operating temperature range | Topr | -40 |  | 85 | °C |  | 2 |
| Storage temperature range | Tstg | -40 |  | 85 | °C |  | 2 |
| Soldering temperature, reflow | Tsol |  |  | 260 | °C | Reflow soldering, 10 s | 2 |
| Soldering temperature, hand soldering | Tsol |  |  | 300 | °C | Hand soldering, 3 s | 2 |
| Reverse voltage across LED | VR |  |  | 5 | V | When lighting or testing the LED | 7 |
| Viewing angle (half intensity) | 2θ1/2 |  | 120 |  | deg | IF = 20mA | 2 |
| Peak wavelength | λp |  | 578 |  | nm | IF = 20mA | 2 |
| Spectral line half-width | Δλ |  | 20 |  | nm | IF = 20mA | 2 |

## CAD (KiCad official)

- Symbol: `YLED0402YG`
- Footprint: `LED_SMD:LED_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `yled0402yg-etched.step` / `yled0402yg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `yled0402yg.step` / `yled0402yg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YONGYUTAI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590927197261537280) (8 pp, sha256 `fdc09136591de0f7`, 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/yled0402yg-datasheet.pdf)