J Series? LEDs extend Cree??s industry-leading portfolio of lighting-class LEDs to a broader set of applications. The J Series 2835 LEDs combine high efficacy and excellent value. The J Series 2835 High Efficacy (HE) LEDs deliver a boost in efficacy compared to J Series Standard 2835 LEDs. The J Series 2835 Standard and HE LEDs are optimized for applications where high efficacy and smooth appearance are critical, such as troffers, panel and outdoor area lights. Offering color options aligned to Cree??s EasyWhite? bins, the J Series 2835 Standard and HE LEDs are available in 2700K – 6500K with high CRI and multiple voltage selections in an industry-compatible size of 2.8 mm x 3.5 mm.