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Power rating on resistors

Ryan.Walkowski

Jan 23, 2014
2
Joined
Jan 23, 2014
Messages
2
I have a simple schematic I am following for creating LED lighting. It calls for a (1K 3W Resistor) I can only seem to source resistors that are 1K 2W, 1K 5W and 1K 7W Does that power rating matter if I go up the way too the first higher one I can find of 5W, I am assuming the 3W is maximum wattage that can pass safely through it. Am I correct in this or do I need to go and try and find a 1K 3W resistor somewhere.

Thanks for your help

Regards
 

BobK

Jan 5, 2010
7,682
Joined
Jan 5, 2010
Messages
7,682
You can always use a higher wattage resistor in place of a lower one.

Bob
 

OLIVE2222

Oct 2, 2011
690
Joined
Oct 2, 2011
Messages
690
wattage is what the resistor can dissipate not "pass safely through it". All wattage doesn't exist as you find out, so just use one rated above your needs with a bit of margin to be on the safe side.
 
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