Capacitor 22pF

Other Hardware General Electronics
1

Hi,

I am going the local electronic store to get a 22pF cer capacitor for the arduinoISP. I am looking at there website and they have few choices I don't know exactly which one to get. Please I need help choosing one. thanks

 CAP CER SMT 22PF 50V 10% 0402 T/RL 
 CAP CER SMT 22PF 25V 5% 0603 T/R REEL NOT COUNTED 
CAP CER SMT 22PF 50V 5% 0603 T/R REEL NOT COUNTED 
CAP CER SMT 22PF 100V 5% 0805 TR

There are lots of other choices but not sure what all those number means. Thanks!

2

Personally I'd get the 0805 ones, as they're much easier to handle due to their size.

Are you sure you want SMD parts for this?

3

Thanks madworm, I don't want the SMT sorry just realized that. The only other one they have are the following

 CAP CER RDL 22PF 100V 2% 5LS  
 CAP CER RDL 22PF 100V 5LS BULK
4

I think any of these will work.

5

I like the 2% .(1% is great).
Remember the lower the % the more accurate the uf value will be.

6

Remember the lower the % the more accurate the uf value will be.

True but you pay for the higher percentage accuracy and in this case there is absolutely no advantage in doing so. Crystals on capacitors are not critical because the crystal's actual requirements are so variable. In practice I have used values from 22pF to 33pF and not been able to measure the difference, in fact I normally use 27pF on a 16MHz crystal.