Capacitors question

[Antonio1963]

Both caps have 222 on the however one is underlined. Are they both 2.2nf?

[PRR]

I think it is underlined so you can tell 999 from 666. And they print the line even though 222 is unambiguous.

[Antonio1963]

I'm just wondering about the value because one of them is a lot bigger than the other but they have the same number on them.

[R.G.]

Physical size isn't necessarily a good indicator of capacitor value unless the capacitors being compared are (1) the same materials (such as film and type of film, ceramic and type of ceramic, etc.) and (2) the same voltage rating. Even then, the economies of packaging may lead a maker to put a smaller cap inside a larger outside package. I have seen pictures of through hole caps broken open to reveal SMD caps inside the outer package.

The only good way to tell is to do some operation that measures the capacitance, whether by meter or by testing it in a circuit.

[GibsonGM]

can't beat those little foreign gadgets that identify the component, some of its characteristics, and value....all for just $19.99!

[Antonio1963]

can't beat those little foreign gadgets that identify the component, some of its characteristics, and value....all for just $19.99!

Please tell me more.

[Kipper4]

Google componant tester.

[bluebunny]

Google componant tester.

Google will even compensate for Rich's spelling.