Cree, Inc. has come out with the second generation of the XLamp®XHP70, the XPH70.2 LED. Cree describes the new LED model as the highest output extremely high power LED. The XHP70.2 LED comes with the same 7.0 mm x 7.0 mm footprint as the previous generation and offers a drop-in upgrade for customers with existing XHP70 designs.
Like its predecessor, the XHP70.2 employs a ceramic substrate. According to Cree, the new LED boasts 9 percent more lumens and 18 percent higher lumens-per-watt (LPW) than the first generation XHP70 LED. Additionally, Cree contends that the XHP70.2 delivers up to 58 percent higher lumen density than the industry’s closest competing LED of the same size.
Increasing LPW and Lumen Density
According to Cree, much of the LPW improvement comes from improvements at the level of the LED die which results in lower voltage. The lower voltages translate to higher LPW efficiency. In addition, Cree said that because the XHP70.2 is brighter than XHP70, it has higher lumen density.
The increased lumen density allows smaller luminaires and can enable better optical control than ever before for high-lumen lighting applications, the company said. The 7000 K version of the LED can emit up to 4292 lumens while consuming 29W maximum (4.8A at 6V) for 148 lumens per watt (LPW).
The device comes in 6V, 12V options, and features CRI minimums of 70, 80, or 90. Cree bins the XHP70.2 LEDs in bins of 2-, 3-, and 5-step EasyWhite Macadam ellipses. The LED, like is predecessor has a beam angle of 125 °.
Improving Optical Uniformity
In addition to light output and efficacy enhancements, Cree says that it improved the optical uniformity of the XHP70.2 LED through secondary optics, enabling lighting manufacturers to deliver better lighting performance.
Cree noted that multi-die LED tend to have dark spots (“gaps”) between chips that don’t light up that can lead to dark spots in the light beam of certain types of optics. Cree said that with both the recently released XHP50.2 and the XHP70.2, the company minimized the distance between the LED chips and modified the phosphor deposit process to fill the gaps. The result, Cree contends, is that these new LEDs have almost no such gaps or dark spots when used with secondary optics.
“We selected Cree’s first generation XHP70 LED as the best light source for large areas, including sporting and industrial facilities, because it enabled us to create smaller and more innovative LED lighting systems with unprecedented output and efficacy,” said Ing. Flavio Sangiorgio, R&D Director at Fael Luce. “The improved efficacy of the next generation XHP70.2 LED lets us easily upgrade our products to maintain performance leadership without any major redesign.”
LM-80 data for the XHP70.2 LED is available immediately. This immediate testing data availability results in faster qualification for ENERGY STAR® and DesignLights Consortium® standards.
“Unlike some companies, Cree continues to invest in improving light output, efficacy and reliability of our Extreme High Power LEDs to enable our customers to quickly improve their existing designs and create innovative new products,” said Dave Emerson, Cree LEDs senior vice president and general manager. “Our XHP LEDs highlight the unique advantages of Cree’s ceramic high power LED technology in reducing the cost and improving the performance of systems where extreme light output is required.”
The LED is compatible with reflow soldering, and is both ROHS and REACH compliant. The XHP70.2 LEDs from 2700K to 5000K feature Cree’s Easy White Technology while 5700K to 7000K models feature ANSI white. The LED is suitable for applications including directional, low- and high-bay, as well as roadway and parking lot luminaires.
Product samples are now available, and production quantities are available with standard lead times. Visit www.cree.com/xlamp/xhp70_2 to learn more.