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Capacitor operating characteristics question

G

Golf

Jan 1, 1970
0
I have a Tantalum capacitor that needs to be replaced - 560pf/2Kv. I
have found a ceramic cap with the same values. Can I replace with the
ceramic, and what are the differences other than material of
construction? Thanks for your input.
 
M

mkaras

Jan 1, 1970
0
Golf said:
I have a Tantalum capacitor that needs to be replaced - 560pf/2Kv. I
have found a ceramic cap with the same values. Can I replace with the
ceramic, and what are the differences other than material of
construction? Thanks for your input.

A 2Kv Tantlum capacitor? Wow! Are you sure?

I would think that the ceramic capacitor would be a good choice for
replacement. Just make really sure that you replace with equal or
higher voltage rating. The materials of construction in capacitors of
similar ratings affect the following factors:

- Capacitor size
- Temperature stability
- Tolerance of capacitance
- Susceptability failure under over voltage transients
- Ageing characteristics

-- mkaras
 
M

Meat Plow

Jan 1, 1970
0
A 2Kv Tantlum capacitor? Wow! Are you sure?

I would think that the ceramic capacitor would be a good choice for
replacement. Just make really sure that you replace with equal or higher
voltage rating. The materials of construction in capacitors of similar
ratings affect the following factors:

- Capacitor size
- Temperature stability
- Tolerance of capacitance
- Susceptability failure under over voltage transients - Ageing
characteristics

Looks like a tuning cap in the HO circuit of Zenith, Philips etc..
I would stick with the same composition.
 
S

Sam Goldwasser

Jan 1, 1970
0
Golf said:
I have a Tantalum capacitor that needs to be replaced - 560pf/2Kv. I
have found a ceramic cap with the same values. Can I replace with the
ceramic, and what are the differences other than material of
construction? Thanks for your input.

It's not tantalum. :)

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G

Golf

Jan 1, 1970
0
Sam said:
It's not tantalum. :)
Thanks Sam. It looks like one, and it is in the Horiz. of a Zenith. I
simply can't locate the replacement, so was looking to sub. Do you know
what type Cap this is? Thanks again to all.
 
E

Eeyore

Jan 1, 1970
0
Golf said:
Thanks Sam. It looks like one,

It very oviously isn't though !
and it is in the Horiz. of a Zenith. I
simply can't locate the replacement, so was looking to sub. Do you know
what type Cap this is? Thanks again to all.

It'll almost certainly be ceramic or plastic film.

Graham
 
D

default

Jan 1, 1970
0
I have a Tantalum capacitor that needs to be replaced - 560pf/2Kv. I
have found a ceramic cap with the same values. Can I replace with the
ceramic, and what are the differences other than material of
construction? Thanks for your input.

Almost certainly not a tantalum with a 2KV rating. They just don't go
up that high or down that low capacity wise. Tantalum caps are
electrolytic types, and polarized (never have seen a tantalum that
wasn't polar)..

I could believe it is ceramic - that's in the range of capacity and
voltage that makes it believable
 
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