Hi, I need some help. I have done some research but still can't find enough information about this Sprague 25uF 0-25VDC axial capacitor.
It looks like it needs to be replaced. Any suggestion is most welcome.
It looks like it needs to be replaced. Any suggestion is most welcome.
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If you can, check for leakage with resistance range in 10k or so with a meter.
Also, if you have one, check its capacitance with a meter.
Could be age related break down of the casing.
Sprague are good, I don't know what kind of capacitor this is.
You looked for a replacement in axial construction?
What is its function in the circuit?
Also, if you have one, check its capacitance with a meter.
Could be age related break down of the casing.
Sprague are good, I don't know what kind of capacitor this is.
You looked for a replacement in axial construction?
What is its function in the circuit?
An example, but make sure the part that you choose is not too long for the space.
It is not worth testing that old capacitor, just replace it.
https://www.newark.com/vishay/mal20...-GEN-Shopping-NewStructure-Passive-Components
It is not worth testing that old capacitor, just replace it.
https://www.newark.com/vishay/mal20...-GEN-Shopping-NewStructure-Passive-Components
This is the only +/-10% 25uF cap I could find at Farnell:
https://uk.farnell.com/multicomp-pro/mcax25v256k6x13/aluminum-electrolytic-capacitor/dp/1600775
That sort of tolerance for an electrolytic is rare.
https://uk.farnell.com/multicomp-pro/mcax25v256k6x13/aluminum-electrolytic-capacitor/dp/1600775
That sort of tolerance for an electrolytic is rare.
Thank you for the suggestion. I checked and I will go with the 105 degree version.
No problem with space. The length allowance is 25mm.
Up the voltage and uF a bit if there is room. It's just a regulator bypass.
Thank you for all the suggestions. I initially just wanted to restore the amp in an authentic way. Vishay is still producing the Sprague axial caps, but their price and specs are kind of disappointing. Illinois also has some axial caps. Priced even higher.
Would the Sprague (bigger size) last longer than the radial caps?
Would the Sprague (bigger size) last longer than the radial caps?
I would use a 47uf 35 volt 105C axial cap. Brand is not critical in this position as no audio goes through it.
Or, a 47U 50V cap.
A radial even works there.
What is the amp make?
Track side soldered components with through holes...late 80s or up to 1995 or so.
No heat sink for the power transistor.
It has worked well, and in most cases would be considered end of life.
If it is still working well, a nice well designed and well made unit, with generous component ratings.
Treasure it.
Track side soldered components with through holes...late 80s or up to 1995 or so.
No heat sink for the power transistor.
It has worked well, and in most cases would be considered end of life.
If it is still working well, a nice well designed and well made unit, with generous component ratings.
Treasure it.
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