Author Topic: ceramic caps upping voltage ?  (Read 904 times)

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Online KD0CAC John

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ceramic caps upping voltage ?
« on: February 24, 2016, 04:05:54 pm »
I am chasing issue with Kenwood TS-820 with digital display issues and adding solder to top side of PCB to rectify problems and during this , I may have damaged a ceramic cap 33p .
I had a 33p same size but my box said 100 volts , and many times before some up grading when replacing cap of most types , going from lets 16v to 32v has been ok , but now if the old one was lets say a 12v cap & put in the 100v cap , could making that big a jump in voltage be an issue ?

Thanks 
 

Offline MrSlack

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Re: ceramic caps upping voltage ?
« Reply #1 on: February 24, 2016, 04:07:04 pm »
It will be fine. That's the maximum voltage the dielectric can handle safely before it breaks down rather than any specific measure of capacity.

Edit to add some rationale: most voltage reductions at that sort of scale is about keeping costs low and devices smaller as you need larger capacitors with more dielectric to handle higher voltages which costs more money.

Edit 2: there are some differences with stray inductance and series resistance as well but between 12-100v there is probably little difference.
« Last Edit: February 24, 2016, 04:09:44 pm by MrSlack »
 

Online KD0CAC John

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Re: ceramic caps upping voltage ?
« Reply #2 on: February 24, 2016, 05:23:16 pm »
OK thanks .
 


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