Max Voltage of Ceramic Capacitor

[Peter_wadley]

I cant seem to find out what the max Voltage you can apply to this capacitor is:

 

[crust]

There is a glare on the part, but I believe I see an E, that means 25V assuming this part follows the general marking standard

 

[Krumlink]

E5M it reads.

 

[Peter_wadley]

There is a glare on the part, but I believe I see an E, that means 25V assuming this part follows the general marking standard

OK thanks!

Do you by chance have a link to the marking standards?

 

[crust]

They are in a book I have, but a quick search yielded **broken link removed**. I didn't check it so I can't attest to its correctness.

 

[Peter_wadley]

Yes thats the same one I found... its perfect

I was always under the impression ceramic caps could withstand a number of KV, thank good i asked!!

 

[Hero999]

Most ceramic capacitors can only stand from 25V to 100V but some are only rated to 16V.

 

[crutschow]

In the olden days, the ceramic caps that were used in tube circuits had to withstand several hundred volts. And some high power transmitter circuits run on well over a thousand volts. Thus the typical ceramic cap was designed to withstand high voltages. Now there's not much need for such high voltages so the caps are correspondingly lower voltage since a lower voltage cap can use a thinner insulator between conducting layers, making the cap physically smaller.

 

[Nigel Goodwin]

Yes thats the same one I found... its perfect

I was always under the impression ceramic caps could withstand a number of KV, thank good i asked!!

It's usually the blue circular ones that are high voltage, they commonly go faulty in TV's - easy to spot though, they either have an obvious burnt spot on them, or a burnt split.