How many days can I store unused electrolytic capacitors without electrical voltage but that this electrolytic capacitor does not present problems due to non-use and depolarization?
From pg29 section 7.3.2 Storage conditions of:
If not otherwise specified, our aluminum electrolytic capacitors can be stored voltage-free above stated conditions (from +5 °Cto+35°C, relative humidity ≤ 75%) for at least two years;
You might also be interested in section 10 Maintenance on pg 31.
(Take note that this is from one of the higher quality suppliers.)
I'm having trouble parsing your post.Does this rule apply to electrolytic capacitors mounted on electronic systems and with 30 years of life and use?
does this two-year rule not apply to any manufacturer's electrolytic capacitors?
I have electronic devices from 1990 with electrolytic capacitors but I have no resistor and I have nothing to apply low voltage, what is the recommendation?
We are confused by your posts as well, but we will still try to do the best we can to help you.i am confused my doubt
OK, but some things in life are confusing. Like the lifetime of electrolytic caps. I'm confused too. You may know more about this than all of the people out there that never wondered or aren't confused.i am confused my doubt
When I'm doing a restore that has electrolytic capacitors, I replace all of them. The electrolyte does dry up as others have mentioned.We are confused by your posts as well, but we will still try to do the best we can to help you.
Are you trying to restore old electronic devices to operation? Replacing old electrolytic capacitors is one of the main ways that this type of restoration is done. Are these old devices not working?
@dlgoff is our local expert in old electronic / electrical device restoration...
https://en.wikipedia.org/wiki/Capac...n_non-solid_aluminium_electrolytic_capacitorsWhat happens to the chemistry of the electrolytic capacitor if it remains unused for more years? Are used electrolytic capacitors manufactured in 1990 totally different in the chemistry of off-the-shelf electrolytic capacitors?
What happens to the chemistry of the electrolytic capacitor if it remains unused for more years? Are used electrolytic capacitors manufactured in 1990 totally different in the chemistry of off-the-shelf electrolytic capacitors?
I'm no expert in electrolytic caps, but my impression is just that a part of it evaporates out of the caps over time. It's probably not cost effective to hermetically seal those caps, so the plastic layers that are used apparently are slightly permeable to the drying out process.