In my never ending search for radio parts, I am having trouble finding some 1, 2.2, and 3.3 uf capacitors. Everybody online sells them, but they are all in low voltages like 250 VDC. Can anyone point me in the right direction to find a supplier with some 500-630 VDC capacitors? I've found some but they are $12 dollars a piece. Obviously they are too heavy duty for good old radios. Any help would be much appreciated.
Nicholas
AES, tubesandmore.com , has them on page 34 of their 2002 catalog. 1 mf @ 630 volts is $1.90, 2.2 mf - $2.40 and 3.3 mf - $2.75.
If you want replacement filter caps why not use 10 mfd @ 450 volts for these low values?
Norm
:Hello,
:
:In my never ending search for radio parts, I am having trouble finding some 1, 2.2, and 3.3 uf capacitors. Everybody online sells them, but they are all in low voltages like 250 VDC. Can anyone point me in the right direction to find a supplier with some 500-630 VDC capacitors? I've found some but they are $12 dollars a piece. Obviously they are too heavy duty for good old radios. Any help would be much appreciated.
:
:Nicholas
:
If you are looking for the radial lead mylar types, they are just going to be expensive, even with the economies of scale figured in, but they should be available. I believe they carry monolithic mylar caps at the 1Mfd level at 630wvdc, I use the smaller values a lot- at the 630 WVDC rating. You might consider 2- 2.2Mfd 450 volt caps in series- If you wanted extra insurance on reliability, put two 1 meg resistors across each of the caps to equalize voltage that each sees. When the caps are in series, the value is halved, but the working voltage is increased a bit over the printed rating for each one. 630 volts across a pair of 450 volt caps in series should not be out of the realm of probable expectations, as effective potential across the dielectric of each cap is only 315 volts.
:Hi Nicholas
:
: AES, tubesandmore.com , has them on page 34 of their 2002 catalog. 1 mf @ 630 volts is $1.90, 2.2 mf - $2.40 and 3.3 mf - $2.75.
:
: If you want replacement filter caps why not use 10 mfd @ 450 volts for these low values?
:
:Norm
:
::Hello,
::
::In my never ending search for radio parts, I am having trouble finding some 1, 2.2, and 3.3 uf capacitors. Everybody online sells them, but they are all in low voltages like 250 VDC. Can anyone point me in the right direction to find a supplier with some 500-630 VDC capacitors? I've found some but they are $12 dollars a piece. Obviously they are too heavy duty for good old radios. Any help would be much appreciated.
::
::Nicholas
::
Thanks for all of your help. I guess I never considered using 10Mfd caps for replacing such low values. I can get my 10Mfd caps for $.75 each, and that is a significant savings over buying the lower value caps as long as the voltage is low enough.
Thanks again,
Nicholas
:Hi,
:Digi-key carries a modest selection of 500 volt electrolytics, as for the 630 volt, they would likely have some at the 1mf value, but they might still be kind of spendy.
:
:If you are looking for the radial lead mylar types, they are just going to be expensive, even with the economies of scale figured in, but they should be available. I believe they carry monolithic mylar caps at the 1Mfd level at 630wvdc, I use the smaller values a lot- at the 630 WVDC rating. You might consider 2- 2.2Mfd 450 volt caps in series- If you wanted extra insurance on reliability, put two 1 meg resistors across each of the caps to equalize voltage that each sees. When the caps are in series, the value is halved, but the working voltage is increased a bit over the printed rating for each one. 630 volts across a pair of 450 volt caps in series should not be out of the realm of probable expectations, as effective potential across the dielectric of each cap is only 315 volts.
:
:
:
::Hi Nicholas
::
:: AES, tubesandmore.com , has them on page 34 of their 2002 catalog. 1 mf @ 630 volts is $1.90, 2.2 mf - $2.40 and 3.3 mf - $2.75.
::
:: If you want replacement filter caps why not use 10 mfd @ 450 volts for these low values?
::
::Norm
::
:::Hello,
:::
:::In my never ending search for radio parts, I am having trouble finding some 1, 2.2, and 3.3 uf capacitors. Everybody online sells them, but they are all in low voltages like 250 VDC. Can anyone point me in the right direction to find a supplier with some 500-630 VDC capacitors? I've found some but they are $12 dollars a piece. Obviously they are too heavy duty for good old radios. Any help would be much appreciated.
:::
:::Nicholas
:::