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Solytech SL-D460EXP

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Re: Solytech SL-D460EXP

Postby LongRunner » February 9th, 2015, 9:12 am

Wester547 wrote:Remember the Aerogel "super capacitors" clock capacitors that were notorious for leaking in the original Xbox? They were only rated for 1,000 hours at 70*C with a maximum temperature of 70*C. Yes, 70*C. Look at the datasheet. Coupled with those crappy circular bungs they used, no wonder they failed prematurely... :mrgreen: (at least inconsistently - the ones I pulled had bullseye bungs)

Well in that case, I fail to see what advantage they provide over good old CR2032 button cells.

I know that ceramic capacitors can crack and go short-circuit under mechanical stress, and that tantalum capacitors don't take well to surges. So far neither has failed me, though.
Information is far more fragile than the HDDs it's stored on.

Smart people don't buy "smart" devices without very carefully weighing up the risks and benefits beforehand.

My PC: Core i3 4130 on GA-H87M-D3H with GT640 OC 2GiB and 2 * 8GiB Kingston HyperX 1600MHz, Kingston SA400S37120G, WD3003FZEX-00Z4SA0 and HDS721010CLA630, Pioneer BDR-209DBKS and Optiarc AD-7200S, Seasonic G-360, Chenbro PC31031, Linux Mint Cinnamon 20.2 (with Windows 7 still accessible if needed).
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Re: Solytech SL-D460EXP

Postby Wester547 » February 14th, 2015, 2:08 pm

LongRunner wrote:Well in that case, I fail to see what advantage they provide over good old CR2032 button cells.
The 1.6A/1.6B Xboxes switched out the Aerogel cap for a Nichicon "EVerCAP" UC series capacitor (datasheet) which was also rated for 1,000 hours @ 70*C but at least those capacitors had bungs with thicker rubber so they were less prone to leaking over the years (though they weren't as low ESR as the Aerogel capacitor - 2 ohms vs. 0.4 ohms - don't know if it matters in that application, though, I think capacitance and of course voltage is more critical). Those series were actually double layer capacitors so I think they use quaternary ammonium salts for the electrolyte. Unfortunately the 1.6 Xboxes do need the clock capacitor to POST. I also agree that 400W is probably the limit of the PSU in the first post with a 35 size transformer.
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