Electronics Weekly
“These LEDs deliver smoother, more focused light output through optics compared to traditional square LES designs – perfect for premium flashlights, torches, bike lights and headlamps,” according to the company.
Using the same 3.45 x 3.45mm footprint Cree’s XP led family, they are the XP-LR with an 1.7mm round emitter, and the 1.3mm diameter XP-GR.
In both cases maximum current is 6A, and at 85°C this gives an output of 1,629 or 1,202 lm respectively.
For the larger emitter XP-LR forward, viewing angle is 125° and forward voltage is typically 3V at 2A 85°C (3.2Vmax).
Minimum output at 2A is 730 lm at 85°C (122 lm/W), or 808 lm at 25°C.
Thermal resistance is 0.8°C/W (junction to solder point) and, with heatsinks, de-rating starts at ~15°C for a 7°C/W junction-to-ambient system, or as high as 132°C/W for 1°C/W – both to zero at 150°C.
For the smaller emitter XP-GR, viewing angle is 125° and forward voltage is typically 2.91V at 1.5A 85°C (3.15Vmax).
At 1.5A there are two minimum output bins in this case: 440 or 510 lm at 85°C (100 or 117 lm/W), which at 25°C is 499 or 578 lm respectively.
Thermal resistance is 1.3°C/W (junction to solder point) and, with heatsinks, de-rating starts at ~0°C for a 8°C/W junction-to-ambient system, or 115°C/W for 2°C/W – again to zero at 150°C.
Optically, the emissive surface is 0.8mm above the soldering face.
Find the data sheets on Cree’s website:
XP-LR
XP-GR
Cree revealed a 10 x 10mm 16,500 lumen LED for flashlights in the middle of 2024
