# APTD2012LSYCK

**Kingbright** · LED Indication - Discrete · 0805

APTD2012LSYCK from Kingbright, in a 0805. 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/aptd2012lsyck/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode of the LED chip; reverse voltage max 5 V, reverse current 10 µA max at VR = 5 V. |
| 2 | A | passive | Anode of the AlGaInP Super Bright Yellow LED chip; DC forward current max 30 mA, VF 1.85 V typ and 2.1 V max at IF = 2 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Kingbright |
| Package | 0805 |
| 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 | 1.5 | 1.85 | 2.1 | V | IF = 2mA | 2 |
| Reverse Current | IR |  |  | 10 | µA | VR = 5V | 2 |
| Luminous Intensity | Iv | 30 | 90 |  | mcd | IF = 2mA | 1 |
| Forward Voltage tolerance | VF | -0.1 |  | 0.1 | V | Printed as ±0.1V (note 2) | 2 |
| Dominant Wavelength tolerance | λdom | -1 |  | 1 | nm | Printed as ±1nm, sorting machine tolerance (note 1) | 2 |
| Luminous Intensity / luminous flux tolerance | Iv | -15 |  | 15 | % | Printed as ±15% (note 2) | 1 |
| Power Dissipation | PD |  |  | 75 | mW |  | 2 |
| Reverse Voltage | VR |  |  | 5 | V |  | 2 |
| Junction Temperature | Tj |  |  | 115 | °C |  | 2 |
| Operating Temperature | Top | -40 |  | 85 | °C |  | 2 |
| Storage Temperature | Tstg | -40 |  | 85 | °C |  | 2 |
| DC Forward Current | IF |  |  | 30 | mA |  | 2 |
| Peak Forward Current | IFM |  |  | 175 | mA | 1/10 Duty Cycle, 0.1ms Pulse Width | 2 |
| Electrostatic Discharge Threshold (HBM) |  |  |  | 3000 | V |  | 2 |
| Temperature Coefficient of VF | TCV |  | -1.9 |  | mV/°C | IF = 2mA, -10°C ≤ T ≤ 85°C | 2 |
| Wavelength at Peak Emission | λpeak |  | 590 |  | nm | IF = 2mA | 2 |
| Dominant Wavelength | λdom |  | 590 |  | nm | IF = 2mA | 2 |
| Spectral Bandwidth at 50% | ∆λ |  | 20 |  | nm | IF = 2mA | 2 |
| Capacitance | C |  | 20 |  | pF |  | 2 |
| Temperature Coefficient of λpeak | TCλpeak |  | 0.12 |  | nm/°C | IF = 2mA, -10°C ≤ T ≤ 85°C | 2 |
| Temperature Coefficient of λdom | TCλdom |  | 0.07 |  | nm/°C | IF = 2mA, -10°C ≤ T ≤ 85°C | 2 |
| Thermal Resistance (Junction / Ambient) | Rth JA |  | 690 |  | °C/W | Mounted on FR4 PC board, pad size ≥ 16 mm² per pad (note 2) | 2 |
| Thermal Resistance (Junction / Solder point) | Rth JS |  | 560 |  | °C/W | Mounted on FR4 PC board, pad size ≥ 16 mm² per pad (note 2) | 2 |

## CAD (KiCad official)

- Symbol: `APTD2012LSYCK`
- Footprint: `LED_SMD:LED_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `aptd2012lsyck-etched.step` / `aptd2012lsyck-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aptd2012lsyck.step` / `aptd2012lsyck.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Kingbright datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8569498196231983104) (4 pp, sha256 `8b145a55b25e070e`, 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/aptd2012lsyck-datasheet.pdf)