I'm recapping a radio that has a .001 uF 800 V capacitor. The websites I shop from do not have one available. What can I use in its place?

I have found a .001 uF 1000V, but with that much voltage, I don't want this blowing up in my face...

:I'm recapping a radio that has a .001 uF 800 V capacitor. The websites I shop from do not have one available. What can I use in its place?
:

A capacitor is a device that has electrical capacity. The very definition of the word capacity is the ability to contain something, or the amount something can contain (maximum capacity). An electrical capacitor holds an electrical charge between two metal plates (or on the two plates, actually). Between them is an insulator, or else the electrical potential difference on the two plates would meet, and they'd discharge into one another, thus nulling the charge. The insulator has a maximum voltage rating. Above this rating it may break down and allow the charge to break across, thereby shorting the capacitor and the charge contained there-in.

Using a capacitor with a higher voltage rating poses no danger to you or the radio. A higher voltage capability is actually better, but more expensive and space consuming (since insulators with higher voltage ratings are often thicker). Give us the model number of your radio and perhaps we can recommend a capacitor that is readily available. Also, doubling capacitors in series increases the maximum voltage rating. For instance, if you needed a .001 MFD cap rated for a maximum of 800 WVDC, you could connect two .004 MFD 400WVDC caps in series to achieve the same result. This is a bit more difficult with electrolytic capacitors, but with ordinary paper, mica, or metalized film caps, this is a simple procedure.

T.

It is, according to the schematic sheet, a "Tubular"... From what I understand, this is just another way to say "paper and wax"... Please correct me if I'm wrong. The make and model of the radio is a TrueTone 1836C.

http://www.nostalgiaair.org/PagesByModel/715/M0023715.pdf

C34 is most likely a paper and wax capacitor. Perhaps the reason why 800WV was selected was due to the possibility of the induction of voltages greater than the ordinary B voltage. With heavy audio spikes when the receiver is turned up loud, it is possible that a great voltage might be induced in the output transformer primary, much like in a flyback transformer. This capacitor is, after all, the one that seems to fail most often in all radios.

Most radios don't use capacitors rated for much more than the B voltage. You will probably be safe with one rated for 650 or 630WV. These are readily available, and the metalized film versions are even self healing.

T.

:It is, according to the schematic sheet, a "Tubular"... From what I understand, this is just another way to say "paper and wax"... Please correct me if I'm wrong. The make and model of the radio is a TrueTone 1836C.
:

:http://www.nostalgiaair.org/PagesByModel/715/M0023715.pdf
:
:C34 is most likely a paper and wax capacitor. Perhaps the reason why 800WV was selected was due to the possibility of the induction of voltages greater than the ordinary B voltage. With heavy audio spikes when the receiver is turned up loud, it is possible that a great voltage might be induced in the output transformer primary, much like in a flyback transformer. This capacitor is, after all, the one that seems to fail most often in all radios.
:
:Most radios don't use capacitors rated for much more than the B voltage. You will probably be safe with one rated for 650 or 630WV. These are readily available, and the metalized film versions are even self healing.
:
:T.
:
:
::It is, according to the schematic sheet, a "Tubular"... From what I understand, this is just another way to say "paper and wax"... Please correct me if I'm wrong. The make and model of the radio is a TrueTone 1836C.
::
:
Agree with Thonmas 100% Put in the 1kV and have no worries.
Lewis

"For instance, if you needed a .001 MFD cap rated for a maximum of 800 WVDC, you could connect two .004 MFD 400WVDC caps in series to achieve the same result."

When I said the above, I meant to say two .002 MFD caps, not .004 MFD.

Also, I'm not sure if I quite got to the point I was trying to make in that whole explanation, that increasing the voltage rating of a capacitor doesn't meant that you are going to increase the voltage in the radio to that value and pose a risk to yourself. The voltage rating of a capacitor is simply the maximum voltage that the capacitor can handle safely, regardless of whether it actually does this in real use or not.

T.

The voltage rating on a capacitor means the voltage that it can safely withstand.

Sorry about the late response, but I wanted to say thank you to every one that answered my question for me.