% of the resistor?

[tibor28]

Hey i am just wondering what the percentage of the resistor means. There is always the resistence e.g 10ohm and then ther is e.g 5% written after it.  What does it stand for and does it have any impact on how much the resistor lowers the current?

[*FuFa]

It means tolerance, and yes it has a slight impact, it means the resistance might be different by 5%, but that's nothing to worry about.

[Siggen]

more expensive resistor's often has less tolerance, though just buy what ever suits your budget, it would not make a difference while only using LEDs

[tibor28]

ok thx, and how about the watts of the resistor? whats that for?

[MaO]

ok thx, and how about the watts of the resistor? whats that for?

I think that is how big the resistor actually is, for modding surface mount are the best (1/4 or 1/8)