Electronics > Beginners
Potting an electrolytic capacitor will make it last longer?
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floobydust:
Old Sangamo electrolytics had a hard epoxy seal.
I see they crack with age or due to some pressure building up within the capacitor.
I've never seen another cap manufacturer do this.

edit: These are from the 1980's when there were no safety vents on electrolytic capacitors.
David Hess:
The inverter style backup generator I have has the entire inverter board potted to half way up several large snap-in aluminum electrolytic capacitors but with their tops are exposed, presumably they would rupture safely there.
Gyro:

--- Quote from: In Vacuo Veritas on September 04, 2018, 04:46:52 pm ---
--- Quote from: treez on August 25, 2018, 06:21:10 pm ---Thanks, but i assume that in a totally enclosed enclosure, the potting compound would always make it easier for heat to get out of the capacitor?
Yes i did think of the need-to-vent too....but philips potted over the can top......probably only about 5mm of potting covering the can top though....so could still explode out.....
presumably no 'lytic explosion would be enough to fracture the 1.5mm thinck plastic enclosure

--- End quote ---

Are you really an engineer? Which breakfast cereal did your degree come with?

--- End quote ---

treez may have his faults but your stupid sarky one-line comments don't help anyone. If you're going to make such comments, then FFS include some useful information!  >:(
In Vacuo Veritas:

--- Quote from: Gyro on September 04, 2018, 05:59:45 pm ---
--- Quote from: In Vacuo Veritas on September 04, 2018, 04:46:52 pm ---
--- Quote from: treez on August 25, 2018, 06:21:10 pm ---Thanks, but i assume that in a totally enclosed enclosure, the potting compound would always make it easier for heat to get out of the capacitor?
Yes i did think of the need-to-vent too....but philips potted over the can top......probably only about 5mm of potting covering the can top though....so could still explode out.....
presumably no 'lytic explosion would be enough to fracture the 1.5mm thinck plastic enclosure

--- End quote ---

Are you really an engineer? Which breakfast cereal did your degree come with?

--- End quote ---

treez may have his faults but your stupid sarky one-line comments don't help anyone. If you're going to make such comments, then FFS include some useful information!  >:(

--- End quote ---

The only faults he has are in his circuits. How this man-child got close to electricity is a mystery.

OK, here's some useful information:



Oh, and I believe the word is "snarky".
T3sl4co1l:
Another one,
https://www.vishay.com/docs/42055/678d.pdf
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