2nd batch not as good as 1st – Cree XLamp MC-E K0-WG 370~700-Lumen LED Emitter on 20mm Star Board (MCE-WG-K0) Reviews
posted by techjunkie on 12/01/2008
Involvement:Expert (understands the inner workings) - Ownership:1 day to 1 week
Bright and powerful. Pretty straightforward replacement for CREE XR-E, with small challenges to focusing and power supply.
2nd set of boards I received were serial, not parallel. Had to scratch trace routes on board and solder together leads on each side of LED to convert to parallel.
2nd set had VERY green tint compared to nice white tint of 1st set. I don't think the LEDs I received in my second batch were K-bin or WG tint. : (
Maybe I'm too rough on mine during installation, but 2 out of 3 of my domes fell off. Emitter still works, but hotspot is smaller.
powerfull emitter, fun for projects, but frustratingly fragilie at 4x the cost of XRE stars. A bit of a gamble quality/brightness/tint-wise.
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