Need Help, Please. Quick LED Question.

[ericheredia]

So I am Putting 6 Yellow smd LED's in my PSP.
I'm Just not positive on how much resistance I need In the Resistor I get.

These are the LED's I'm Using.
http://www.kingbrightusa.com/product.asp?catalog_name=LED&product_id=APHK1608SYC

Thank you very much In advanced to anybody that takes the time to answer!

[bustinthejustin]

Well they run typically on 2v. What voltage are you gonna connect this to?

[Darkzero]

If you're using the 3.6 power source on the powerboard, use a:

68 Ohm  1/8 watt 5% resistor

Alternately if you wanted a lower brightness (uses less energy) you could use a:

82 Ohm 1/8 watt 5% resistor

[bustinthejustin]

82 might just make it really dim. 2v is typical but it can go up to 2.5v

[ericheredia]

Yeah I'm gonna connect it to the powerboard. I'll probably use the 68 Ohm  1/8 watt 5% resistor.

Thanks a lot guys, Appreciate it.

[Darkzero]

Mhm, no problem.

[PhenomenalDesigns]

Dont put it on higher voltages, when manufacters sell their leds, they usually state like red leds are 2v - 2.6v, the first part (2v) is what you should run it on as its the voltage it is supposed to run on, any higher it uses more energy, much (at 2.6, MUCH MUCH) more heat, my blue leds at 3.6v (rated 3v to 3.6v) within a few seconds the hot glue around it would melt and in about 15 seconds the solder started to melt

I tried it with another led but instead at 3v, and it just always stays a bit warm and the difference in brightness isn't that much