supercap leaking acid

[d-smes]

@Mikec-  I see a VEC series rated 3V at Conrad, but no NEO series.  And there's nothing on your website- when do you plan to launch?

What is the mechanism by which all EDLC's will eventually leak?  Is it something to do with chemical decomposition of electrolyte such that at end-of-life, they just leak?  Is the electrolyte of 3V rated EDLC's different from 2.7V units such that they have a lower tendency of decomposition / leakage?   The Eaton boys claim their 3V TV series also won't leak but can't or won't provide any test data or explanation to support their claim.

[Mikec.Vina]

Hi  We have had the 3v series in production for over 6 years now and has been great giving long life at higher temperatures
We use different electrolytes to create this beneficial technology. The NEO series is soon to be launched. If we chat off line I can probably say more  mikec@vina.co.kr

[Mikec.Vina]

Hi Martin
Did you ever get to the bottom of your issue? I would be happy to help with the possible explanation and solution  mikec@vina.co.kr

[LabSpokane]

[quote author=Mikec.Vina link=topic=70936.msg1237209#msg1237209 date=1497880962,
Hi  We have had the 3v series in production for over 6 years now and has been great giving long life at higher temperatures
We use different electrolytes to create this beneficial technology. The NEO series is soon to be launched. If we chat off line I can probably say more  mikec@vina.co.kr
[/quote]

While your specific technology is obviously proprietary information, I think what would help is testing results from an independent body with detailed procedures and methods.  The risk of designing in a supercap into a long-life product is so high, that it is a tough sell without such data available publicly. 

Additionally, if there are non-obvious (temp, derating, etc.) techniques to a successful, long-term application of the product, that would be helpful in a application note. 

[Mikec.Vina]

Love to share more information with you off line and understand the issues you have experienced. Maybe arrange some established 3v series or the new series for you to test. We have had some great results from large companies already mikec@vina.co.kr

[Paul Taylor]

Might it be higher RoHS soldering temperature? Hand solder instead?