Re: Samxon capacitor quality discussion (spin-off from OCZ Bug Zapper thread)
"Fake" Samxons are more likely from Samson (AKA Samcon?). Samxon did release a statement some time back cautioning buyers against fakes. As did Nichicon, Rubycon, and Chemi-con. The matter is more complicated than that, though, because all these Chinese brands are so inconsistent to begin with. They don't do any QC testing and buy whatever's available on the market, and the grade of chinese aluminum and electrolyte will vary from batch to batch. So there is no determining how long crapacitors will last - only that they are not worth the risk. To make matters even more complicated, there always exists the possibility that early HMs and HNs were fake because Nichicon is an very high quality manufacturer. But then what about KZGs and KZJs? We may never know without sending samples to the manufacturers. You would think that OEMs get their capacitors and components from authorized distributors or straight from the manufacturer, but that may not always be true for whatever reason.
Well, they are at the very least highly exaggerating about the capability of their caps so as to look reputable. But there is more to it than that - dreck quality aluminum and electrolyte can easily cause outgassing on the shelf, operating temperature, voltage, and ripple current need not be anything but an accelerating factor. So I think they also get away with those "endurance" tests because they are only done for thousands of hours at the most, not hundreds, and tens and hundreds of thousands of hours is more than enough time for poor electrolyte to break down by its lonesome. Also, I think that LTEC is MUCH better quality than CapXon, as Delta are capable of prolonging the life of LTEC but not CapXon.
Could there both be *actual* Samxon caps (the ones you use), and really good fakes from someone like Crapxon?
And don't forget the bean-counters (*cough* Samscum), who proclaim "both series have the same specs, so use the cheaper ones."
On paper, and only on paper, is that true.
As I've stated previously, Nichicon VRs worked while testing devices, when either waiting for the correct caps or to determine if said device was even worth fixing. I've done this.
Now consider two supposedly equal series- one from capxon/ltec, and the other Nichicon. Supposedly equal, meaning can size, ripple current/ESR, capacitance/voltage, as well as endurance. Taken under the same ambient conditions, the junkers blow after a year (hermeis in LCD monitors), yet the "equalivalent" Nichicons outlast the computer that LCD is connected to. If the were equal, they'd also merely last a year.
The datasheets are LYING.
On paper, and only on paper, is that true.
As I've stated previously, Nichicon VRs worked while testing devices, when either waiting for the correct caps or to determine if said device was even worth fixing. I've done this.
Now consider two supposedly equal series- one from capxon/ltec, and the other Nichicon. Supposedly equal, meaning can size, ripple current/ESR, capacitance/voltage, as well as endurance. Taken under the same ambient conditions, the junkers blow after a year (hermeis in LCD monitors), yet the "equalivalent" Nichicons outlast the computer that LCD is connected to. If the were equal, they'd also merely last a year.
The datasheets are LYING.
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