ulrikmm said:
A note of interest: These new new stock RIFAs do not make splashing sounds when shaken. Rumour has it that the electrolyte is in a gel now.
Ulrikmm
No, there's just less of it.
Magura
Magura said:
No, there's just less of it.
Magura
It's an interesting one....
Worth bearing in mind, that even with older stock PEH169s, not all of them sploshed when shaken.
I'll get a technical off to Evox Rifa and try and find out if there has been any fundamental design change....
MCampbell said:
It's an interesting one....
Worth bearing in mind, that even with older stock PEH169s, not all of them sploshed when shaken.
I'll get a technical off to Evox Rifa and try and find out if there has been any fundamental design change....
All the bigger sized PEH169's made pre-GB production, has as I recall "sploshed".
Magura
OK, here's the response I got back from KEMET distribution:
"Kemet have switched all large can production to the BHC method and now impregnate the winding before it is canned, hence no extra fill of electrolyte.
Although this may be considered as a retrograde step by many, it is more than compensated by the adoption of BHC's forming process which is superior to that previously adopted by Evox Rifa."
"Kemet have switched all large can production to the BHC method and now impregnate the winding before it is canned, hence no extra fill of electrolyte.
Although this may be considered as a retrograde step by many, it is more than compensated by the adoption of BHC's forming process which is superior to that previously adopted by Evox Rifa."
MCampbell said:OK, here's the response I got back from KEMET distribution:
"Kemet have switched all large can production to the BHC method and now impregnate the winding before it is canned, hence no extra fill of electrolyte.
Although this may be considered as a retrograde step by many, it is more than compensated by the adoption of BHC's forming process which is superior to that previously adopted by Evox Rifa."
Hmm, interesting
What the forming process is going to do for the lifespan of the cap, is a little unclear to me?
The "old" PEH-169's, had virtually indefinite life.
What the data sheet claimed, was way below the reality.
I guess that "mismatch" is fixed then?
Don't get me wrong, I still think they're up among the best PSU caps, but it's sad they're no longer superior to anything else.
Magura
Magura said:
Hmm, interesting
What the forming process is going to do for the lifespan of the cap, is a little unclear to me?
The "old" PEH-169's, had virtually indefinite life.
What the data sheet claimed, was way below the reality.
I guess that "mismatch" is fixed then?
Don't get me wrong, I still think they're up among the best PSU caps, but it's sad they're no longer superior to anything else.
Magura
That certainly is the key question: what now is the achievable lifespan of the cap?
Wihout knowing what actual impact the overfilling with electroyte had on lifespan, I guess it's difficult to say.....
I'll keep asking the manufacturer questions on this one though....
I was surpriced to see how Panasonic spec theirs
lifespan of say 5000hours at 80degr means that the cap have been exposed to 80degr, for a short time
when the cap have been reformed to 20degr, it means that the cap will last another 5000hours, at 20degr
in other words, a matter of security, giving enough time to change the cap that accidentally was exposed to excessive heat
basicly it means that a 100.000hour 105degr cap will not last very long at 105degr
but only that it still works ok for a long time, after a posssible accident
lifespan of say 5000hours at 80degr means that the cap have been exposed to 80degr, for a short time
when the cap have been reformed to 20degr, it means that the cap will last another 5000hours, at 20degr
in other words, a matter of security, giving enough time to change the cap that accidentally was exposed to excessive heat
basicly it means that a 100.000hour 105degr cap will not last very long at 105degr
but only that it still works ok for a long time, after a posssible accident
RIFA PEH169 33,000uF/100V
Sended this mail at Audiocap in the UK nobody bothered to answer:
to: Sales@audiocap.net
"Dear Sir/Madam,
Could you give me a quote for 12 RIFA PEH169 33000uF/100V
(PEH169PV533VMU2 or PEH169PV533AQU2)?"
Strange I reckoned they would like such an order...
Now I don't need them anymore.
Sended this mail at Audiocap in the UK nobody bothered to answer:
to: Sales@audiocap.net
"Dear Sir/Madam,
Could you give me a quote for 12 RIFA PEH169 33000uF/100V
(PEH169PV533VMU2 or PEH169PV533AQU2)?"
Strange I reckoned they would like such an order...
Now I don't need them anymore.
At this moment we can offer RIFA PEH169SV488Am at very good price, it's only USD20 per piece, but i am in Shenzhen China.
Are these original Wifa ?
Cost for 4 item ?
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