Advise on reliablity / durability for use in new projects? Or are they're more suited for replacing like for like in old electronics?
These are NOS - never used, so will have to be reformed.
Date Code : 1973 of 44th week. so pretty old.
I don't suppose there's a case where old electrolytics can perform better than newer ones?
Here in the states those would qualify as hazardous waste!
I passed on a huge lot of similar parts recently, just too old.
Might be good, but I would question the reliability.
I passed on a huge lot of similar parts recently, just too old.
Might be good, but I would question the reliability.
Reforming very old capacitors doesn't always work , I made one reformer 40 years ago , for electrolytic s and a tester for low capacitance paper capacitors testing leakage which was a regular fault in inter-stage valve/tube radios.
Like Phase I would bin it , what tube radio restorers do it gut the inside and fit a modern version using the old casing , makes it look "original " .
If you do go ahead and try to reform it make sure the leakage/ESR is low and don't turn your equipment on and walk away and leave it , a loud bang is a bit upsetting.
Like Phase I would bin it , what tube radio restorers do it gut the inside and fit a modern version using the old casing , makes it look "original " .
If you do go ahead and try to reform it make sure the leakage/ESR is low and don't turn your equipment on and walk away and leave it , a loud bang is a bit upsetting.
Interesting. Do these electrolytics store better if I were to reform them and then put them in use later on? Or to leave them as is and then reform them at the time they go into use?
I'm not being cheap but in the past i've used old / used large can caps in my hifi builds with great success.
I'm not being cheap but in the past i've used old / used large can caps in my hifi builds with great success.
Give it a shot, but limit the current to 10mA or less, even in the event of a short.
Use 75VDC with a series 10k, 1W resistor to try reforming it, preferably by slowly
raising the DC voltage from 0V to 75V over an hour or more. When the voltage drop
across the resistor is a volt or less, it should be good. Then discharge it carefully.
If storing capacitors long term, definitely reform them first, even new ones.
Use 75VDC with a series 10k, 1W resistor to try reforming it, preferably by slowly
raising the DC voltage from 0V to 75V over an hour or more. When the voltage drop
across the resistor is a volt or less, it should be good. Then discharge it carefully.
If storing capacitors long term, definitely reform them first, even new ones.
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