Difference between revisions of "Cree"

[[File:Cree-xml.jpg|thumb|Cree XM-L LED with 6 yellow strips and 3 brass bonding wires]]Widely used in high power flashlights, this larger die LED was first available in November 2011, offering efficacy of 160 lumens per watt at 350mA. Output is as high as 340 lumens at 700mA (bin U3, which is still rare) therefore it is more efficient and puts out more light at any current than earlier single-die Cree LEDs. However the biggest improvement to overall output is the XM-L can be driven to 3000mA for 1100 lumens of output. Because the XM-L is binned at 700mA, the bin numbers do not correlate exactly to those of the smaller die LEDs which are binned at 350mA. The LED die is 2mm x 2mm on a 5mm x 5mm substrate with 6 yellow strips and 3 bonding wires as opposed to the XP-G with 4 strips and 2 bonding wires and the XP-E with 3 strips and 2 bonding wires. The first production lights to feature the XM-L were versions of the [[ThruNite]] Catapult V2 (first to ship), [[EagleTac]] M3C4, a [[4Sevens]] Quark MiNi, and the [[JETBeam]] M1xm, introduced in December 2010, but budget retailer KaiDomain had LEDs and [[P60]] drop-ins as well as P60 lights around the same time. Neutral and warm tints began shipping in March 2011. [http://www.cree.com/news-and-events/cree-news/press-releases/2010/november/101110-xml Press release] [http://www.cree.com/products/pdf/XLampXM-L.pdf Cree XM-L datasheet]