Newbie: XR-E R2 Triple: How many mA?

AMazeOfTwistyPassages · Apr 20, 2009

I have just bought a triple of XR-E R2 LEDs and am wondering how many mA I should push through them.

The triple is well heat sinked and my driver has options of 450, 700 and 1000 mA.

I'm having difficulty finding a datasheet that has the R2.

Thank in advance
AMOTP

PS

Application is a Night Orienteering headtorch.

ma_sha1 · Apr 20, 2009

The R2 can take 1A no problem, many have pushed to 1.5A

Gunner12 · Apr 20, 2009

The XR-E LEDs are rated up to 1000 mAh, and some have pushed them over that without problem.

:welcome:

AMazeOfTwistyPassages · Apr 20, 2009

Thanks.

Can you please point me towards a datasheet that mentions R2.

The CREE Datasheet on their site doesn't seem to cover R2??

LukeA · Apr 20, 2009

Three R2s at more than 350mA will be pretty hot on the head.

Gunner12 · Apr 20, 2009

R2 is a flux bin of the Xlamp series of LEDs. If you are referring to the Cree XR-E R2 flux bin, look at the Cree XR-E data sheet, if XR-C, look at the XR-C data sheet. There is no specific R2 datasheet because R2 is not a model of LED, it's only a designation for performance of the LED.

How much heatsink do you have?

Newbie: XR-E R2 Triple: How many mA?

AMazeOfTwistyPassages

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ma_sha1

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Gunner12

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AMazeOfTwistyPassages

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LukeA

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Gunner12

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