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Contents

README

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APT1608SYCK

Kingbright · LED Indication - Discrete · 0603

APT1608SYCK 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.

Pinout

Pin Name Type Function
1 K passive Cathode of the LED, on the pad that the diode symbol's bar points to (the polarity mark is on the package-drawing bottom view); reverse current is at most 10 µA at VR = 5 V.
2 A passive Anode of the AlGaInP super bright yellow LED; the diode symbol on the package drawing points from pin 1 to pin 2, with a rated DC forward current of 30 mA, typical VF of 2.0 V (max 2.5 V) at 20 mA, and reverse voltage limit of 5 V.

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 2 2.5 V IF = 20mA 2
Reverse Current IR 10 µA VR = 5V 2
Luminous Intensity (Super Bright Yellow, Water Clear) Iv 80 150 mcd @ 20mA 1
Forward Voltage tolerance VF -0.1 0.1 V 2
Dominant Wavelength tolerance (sorting setup value) λdom -1 1 nm 2
Luminous intensity / luminous flux tolerance Iv -15 15 % Luminous intensity / luminous flux 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 HBM 2
Thermal Resistance (Junction / Ambient) Rth JA 780 °C/W Mounted on PC board FR4, pad size ≥ 16 mm2 per pad 2
Thermal Resistance (Junction / Solder point) Rth JS 650 °C/W Mounted on PC board FR4, pad size ≥ 16 mm2 per pad 2
Wavelength at Peak Emission λpeak 590 nm IF = 20mA 2
Dominant Wavelength λdom 590 nm IF = 20mA 2
Spectral Bandwidth at 50% Φ REL MAX Δλ 20 nm IF = 20mA 2
Capacitance C 20 pF 2
Temperature Coefficient of λpeak TCλpeak 0.12 nm/°C IF = 20mA, -10°C ≤ T ≤ 85°C 2
Temperature Coefficient of λdom TCλdom 0.07 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

CAD (KiCad official)

  • Symbol: APT1608SYCK
  • Footprint: LED_SMD:LED_0603_1608Metric
  • 3D model: 0603 (KiCad packages3D, STEP)
  • 3D model files: apt1608syck-etched.step / apt1608syck-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); apt1608syck.step / apt1608syck.glb are the bare package body.

Provenance

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

  • Datasheet: Kingbright datasheet (4 pp, sha256 7173cad8c185b4b1, retrieved 2026-10-18, 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