CREE-LED Starboards

The CREE Xlamps available on Marktech starboards include Cree XQ-D White Series, Cree XP-G Color Series, Cree XM-L Color Series, and Cree XM-L Color Series.

CREE LED’s XLamp series, including the XQ-D White and XM-L Color on Marktech starboards, represents a high-performance, versatile array of LEDs designed to cater to a broad spectrum of lighting needs. The XQ-D White series offers a variety of correlated color temperatures (CCT) that provide cool, neutral, or warm white light. Specifically, the cool white is available at 6000K, neutral white at 4000K, and warm white at 3000K, allowing designers to select the appropriate ambiance for different settings.

These white LEDs provide a wide viewing angle of 145 degrees, ensuring a broad distribution of light, which is essential for applications like general area lighting or task lighting where wide coverage is needed. The thermal resistance from junction to solder point is rated at 7.5°C/W, indicating an efficient thermal management system that is critical for maintaining longevity and performance of the LEDs. For protection against electrostatic discharge, the XQ-D series boasts a Class 1 ESD classification, which is crucial for reliable operation in sensitive environments.

The DC forward current specification shows that these LEDs can operate at a range of 350 to 700 mA, providing flexibility in power and brightness levels. They have a forward voltage range of 3.1 to 3.5 V at a standard test current of 80 mA and a temperature of 25°C, which is a common operating point for many lighting applications. The temperature coefficient of voltage is -3 mV/°C, reflecting the change in voltage with the change in temperature, which is an important consideration for lighting systems exposed to varied environmental conditions.

Switching to the XM-L Color series, these LEDs come in vibrant hues with dominant wavelength ranges for red (620-635 nm), green (520-535 nm), and royal blue (450-465 nm). The series also offers cool white and neutral white options, with CCT ranging from 3700K for a softer white to 8000K for a stark, cool white. The viewing angle for the XM-L series is slightly narrower at 130 degrees, which is still ample for most lighting applications requiring direct or focused lighting. The thermal resistance in this series is more efficient at 3.5°C/W, allowing better performance in thermally demanding situations.

The XM-L series features a higher LED junction temperature limit of 150°C, which allows for operation in high-temperature environments. The temperature coefficients of voltage for the red, green, and blue/white LEDs vary slightly, demonstrating the change in forward voltage with temperature changes, important for precise lighting control. The reverse voltage ratings ensure that the LEDs can tolerate a certain amount of reverse current without damage, a critical parameter for protecting the LEDs in complex circuits.