Whats the difference between uF and pF capacitor?
On a circuit it says I need a 4.7pF capacitor. Can i substitute this for something else? A uF? Whats the difference?
- Anonymous1 decade agoBest Answer
uF means micro farads. pF means pico farads. Pico and Micro are prefixes used to denote magnitude in measurements. Pico is .000001 times smaller than micro (10^-6 vs 10^-12) so no, you cannot use them interchangeably.
- Anonymous1 decade ago
Capacitors are measured in the unit of capacitance, Farads, abbreviated F. A Farad is an extraordinarily large amount of capacitance, so typical capacitors have a capacitance of much less than 1 Farad. Rather than writing a decimal point and then 9 zeros in a row, we use prefixes as a shortcut (just like in units of length, e.g. meter, centimeter, millimeter, micrometer, etc.)
The prefix μ stands for micro, so 1 μF would be a microfarad. The symbol μ is the greek letter mu, but it pretty much looks like a u. The μ prefix implies that you multiply the value by 10^-6 (or 0.000001) to get the number of Farads. So:
1 μF = 0.000001 Farads
10 μF = 0.00001 Farads
155 μF = 0.000152 Farads
The p in pF stands for pico, so 1 pF is a picofarad (pronounced peek-o). Pico implies that you multiply the value by 10^-12 (or 0.000000000001). So:
1 pF = 0.000000000001 Farads
29 pF = 0.000000000029 Farads
4.7pF = 0.0000000000047 Farads
So, the short answer to your question is: No, you can't use a μF capacitor in place of a pF capacitor in your circuit.
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- AprilLv 44 years ago
For the best answers, search on this site https://shorturl.im/axT7G
My guess is that someone wrote mF and someone else wrote uF because they didn't have the 'micro' symbol on the keyboard. I hope you truly understand stand what capacitance means and how a capacitor "works". That's much more important !
- linkLv 71 decade ago
Somebody needs to teach you the metric prefixes
- 1 decade ago
uF = µF = micro F = 10^-6
pF = pico F = 10^-9
so uF don't match pF
u can't use a uF for a pF capacitor