I've attached the capacitor datasheets for the brand Elcon, after finding that others have had them fail and I couldn't find the DS for them. All datasheets for all currently made series as of 6/20/17.
From my findings a few years back, Elcon and Samcon are either the same company or one owns the other and they have closely-related products. Elcon EEZ was used quite often on low-end XFX GeForce 9 series video cards and it burst the same way as Sacon FZ.
Now, it gets even more interesting, because XFX used to often use Sacon FZ on their mid- and low-range GeForce 8 series of video cards. And before that, XFX used Evercon and GSC.
So where I am going with this?
GSC changed names to Evercon, which then became Sacon, because they were all utter garbage. Then Elcon came along and died the same way as Sacon... so I'm pretty certain Elcon is just another name for Sacon... and I also have a few screenshots of their website showing Elcon and Samcon factories on the same page.
In short, most likely:
GSC = Evercon = Sacon = Elcon = Samcon = ...GARBAGE
So don't use them!
I do appreciate you posting the datasheets, though. Might come in handy when needing to replace one of these. Although, the truth is I've seen Elcon EEZ series appear good and measure worse than general purpose 85C caps (that was on a GeForce 9400 GT video card). What I find even more amusing is that Panasonic FM and FR easily beat the crap out of both Sacon FZ and Elcon EEZ in terms of specs... and FZ/EEZ is supposed to be a "high ripple, low ESR" series.
What about NICHIcon? I wouldn't consider them bad. They just had a bad run of HM/HN/HZ for a few years, but they've fixed the issue since and until they finally stopped making them.
Despite the mass KZG / KZJ failures, I also still consider Chemi-con to be a good brand. KZJ was discontinued a decade ago now. No idea if the issues with KZG were ever fixed before discontinuation, but "for what it's worth", I haven't seen a prematurely failed KZG with 2009 datecodes and newer, which says something considering the "bad" KZGs (made from 2001 to 2008) started failing around 2005 to 2011 after a few years of discontinuous use in moderate to high heat environments.
I think Suncon (formerly Sanyo's electrolytic division) is good too, despite a couple bad series / runs from them. I've seen a couple datasheets for Sacon FZ (easily found on Google ). One claims them to be of ultra low-impedance grade like Nichicon HM. The other, closer to Nichicon HD. I wouldn't stake my life on either claim, however.
Alrighty, I did some digging and found the websites of some known shit cap makers. Only problem is they don't post the datasheets, but some post the specs. Also, a lot of it is broken website.
Broken Website/No Datasheet: http://yzpsttech.com - Website has pictures of datasheets, nothing more, they are also extremely low resolution.
http://www.jiaye.com.cn/html/en - Working website, datasheets on website in image form, I don't have a decent image to pdf converter, nor do I use office programs much so someone will need to convert these. We've seen this brand a lot.
Kingtronics upload. I've dealt with components from these guys before, never seen their caps though. Everything else they make is great as far as I know, I hope their caps are the same.
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