XINGLIGHT XL-1608UBC-04

Product FAQ

• 1. What are the key electrical and optical specifications of the XINGLIGHT XL-1608UBC-04 LED?
  The XINGLIGHT XL-1608UBC-04 is a blue surface-mount LED in the industry-standard 0603 (1608 metric) package, measuring 1.6 × 0.8 × 0.4 mm. It is specified at a 20 mA forward current with a forward voltage of 2.7 V to 3.4 V. The LED has a dominant wavelength of 460 nm to 475 nm, a typical peak wavelength of 465 nm, and a 120° viewing angle, making it suitable for indicator and backlighting applications.
• 2. What should be considered when driving the XL-1608UBC-04 in a circuit?
  The XL-1608UBC-04 is a current-driven LED with a maximum continuous forward current of 20 mA. To prevent excessive current caused by forward-voltage variation, a current-limiting resistor should be used in the drive circuit. The datasheet recommends using a circuit configuration that regulates the current through each LED rather than relying on constant-voltage drive alone, as forward-voltage differences can cause current imbalance and may subject some LEDs to stresses exceeding their maximum ratings. Following the recommended circuit design helps ensure reliable operation and long-term performance.
• 3. How do temperature and drive current affect the long-term performance of the XL-1608UBC-04?
  Like other LEDs, the XL-1608UBC-04 performs best when operated within its specified electrical and environmental limits. Excessive drive current and elevated operating temperatures can reduce luminous intensity, affect color characteristics, and shorten service life. Following the recommended operating conditions, providing appropriate current limiting, and considering thermal management during system design help maintain stable optical performance over time.
• 4. Which PCB layout and soldering practices help ensure reliable assembly of the XL-1608UBC-04?
  The XL-1608UBC-04 is designed for automated SMT assembly and is compatible with infrared reflow soldering. During assembly, correct LED polarity should be verified before soldering. The datasheet recommends a maximum soldering temperature of 240 ± 5°C for approximately 6 seconds, and reflow soldering should not be performed more than twice. Following the manufacturer's recommended soldering profile and handling precautions helps ensure reliable assembly and long-term performance.
• 5. Why is the XL-1608UBC-04 commonly used in compact electronic products?
  The XL-1608UBC-04 combines a compact 0603 (1608 metric) package with blue light output, making it suitable for space-constrained electronic designs. According to the datasheet, typical applications include communication products, industrial equipment, automotive electronics, smart home devices, medical equipment, indicator lights, and backlighting applications. Its small package size also makes it well suited for high-density SMT assembly.