# APT1608LSYCK

**Kingbright** · LED Indication - Discrete · 0603

APT1608LSYCK from Kingbright, in a 0603. 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/apt1608lsyck/render/states.json"}

## Pinout

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

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Kingbright |
| Package | 0603 |
| 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 |
| Operating Temperature | Top | -40 |  | 85 | °C |  | 2 |
| Storage Temperature | Tstg | -40 |  | 85 | °C |  | 2 |
| Power Dissipation | PD |  |  | 75 | mW |  | 2 |
| Reverse Voltage | VR |  |  | 5 | V |  | 2 |
| Junction Temperature | Tj |  |  | 115 | °C |  | 2 |
| DC Forward Current | IF |  |  | 30 | mA |  | 2 |
| Peak Forward Current | IFM |  |  | 140 | mA | 1/10 Duty Cycle, 0.1ms Pulse Width | 2 |
| Electrostatic Discharge Threshold (HBM) |  |  |  | 3000 | V |  | 2 |
| Thermal Resistance (Junction / Ambient) | Rth JA |  | 520 |  | °C/W | Mounted on PC board FR4, pad size ≥ 16 mm2 per pad | 2 |
| Thermal Resistance (Junction / Solder point) | Rth JS |  | 420 |  | °C/W | Mounted on PC board FR4, pad size ≥ 16 mm2 per pad | 2 |

## CAD (KiCad official)

- Symbol: `APT1608LSYCK`
- Footprint: `LED_SMD:LED_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `apt1608lsyck-etched.step` / `apt1608lsyck-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `apt1608lsyck.step` / `apt1608lsyck.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/8589836229820129280) (4 pp, sha256 `57f437a5e192969e`, 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/apt1608lsyck-datasheet.pdf)