# APT1608EC

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

APT1608EC 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/apt1608ec/render/states.json"}

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode, per the package drawing's diode symbol; the reverse voltage limit between the pins is 5 V. |
| 2 | A | passive | Anode, per the package drawing's diode symbol; forward current is 20 mA typical test and 30 mA DC maximum, with 2 V typical (2.5 V max) forward voltage at 20 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 |
|---|---|---|---|---|---|---|---|
| Luminous Intensity | Iv | 8 | 15 |  | mcd | @ 20mA | 1 |
| Forward Voltage | VF |  | 2 | 2.5 | V | IF = 20mA | 2 |
| Reverse Current | IR |  |  | 10 | µA | VR = 5V | 2 |
| Power Dissipation | PD |  |  | 75 | mW |  | 2 |
| Reverse Voltage | VR |  |  | 5 | V |  | 2 |
| Junction Temperature | Tj |  |  | 125 | °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 |  |  | 160 | mA | 1/10 duty cycle, 0.1 ms pulse width | 2 |
| Electrostatic Discharge Threshold (HBM) |  |  |  | 8000 | V | HBM | 2 |
| Luminous Intensity Tolerance | Iv | -15 |  | 15 | % | Luminous intensity / luminous flux | 1 |
| Forward Voltage Tolerance | VF | -0.1 |  | 0.1 | V |  | 2 |
| Dominant Wavelength Tolerance | λdom | -1 |  | 1 | nm | Setup value of sorting machine | 2 |
| Thermal Resistance (Junction / Ambient) | Rth JA |  | 550 |  | °C/W | Mounted on FR4 PCB, pad ≥16 mm2 per pad | 2 |
| Thermal Resistance (Junction / Solder point) | Rth JS |  | 370 |  | °C/W | Mounted on FR4 PCB, pad ≥16 mm2 per pad | 2 |
| Wavelength at Peak Emission | λpeak |  | 627 |  | nm | IF = 20mA | 2 |
| Dominant Wavelength | λdom |  | 617 |  | nm | IF = 20mA | 2 |
| Spectral Bandwidth at 50% | Δλ |  | 45 |  | nm | IF = 20mA | 2 |
| Capacitance | C |  | 15 |  | pF |  | 2 |
| Temperature Coefficient of λpeak | TCλpeak |  | 0.13 |  | nm/°C | IF = 20mA, -10°C ≤ T ≤ 85°C | 2 |
| Temperature Coefficient of VF | TCV |  | -1.9 |  | mV/°C | IF = 20mA, -10°C ≤ T ≤ 85°C | 2 |
| Temperature Coefficient of λdom | TCλdom |  | 0.06 |  | nm/°C | IF = 20mA, -10°C ≤ T ≤ 85°C | 2 |
| Viewing Angle (2θ1/2) | 2θ1/2 |  | 150 |  | ° |  | 1 |

## CAD (KiCad official)

- Symbol: `APT1608EC`
- Footprint: `LED_SMD:LED_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `apt1608ec-etched.step` / `apt1608ec-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `apt1608ec.step` / `apt1608ec.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/8590904036214321152) (4 pp, sha256 `bbc8a9fcec828508`, retrieved 2026-11-07, 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/apt1608ec-datasheet.pdf)