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Old 10th December 2008, 03:12 PM   #1
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Default 6N6P-I life-time

Hi ,

based on this datasheet : http://www.tubes.ru/techinfo/HiFiAudio/6n6p.html

It seems the lifetime is ONLY 500 hours
Is it right? Or maybe can be 5000 hours ?
I am a bit worried because I have 10 of these little triodes
Thanks for your help.

Cheers,
Paolo
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Old 10th December 2008, 03:27 PM   #2
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Never seen the ones with an "I". So what, after a 200hr compulsory break-in you still have another 300 to enjoy
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Old 10th December 2008, 03:37 PM   #3
robot is offline robot  Croatia
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http://www.ptsoundlab.com/tubes/prea...j/6N6Pdata.pdf
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Old 10th December 2008, 04:10 PM   #4
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Yup, time 2 month my valves is end!

this is the valves I have purchased, http://cgi.ebay.com/RUSS-TUBES-6N6P-...ash=item260327

I have fear it is the "I" version......
Very strange, come on , is it possible 500 hours only? Worse of a 5842!
Now I have understood why they was so cheap

Cheers,
Paolo
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Old 10th December 2008, 04:58 PM   #5
robot is offline robot  Croatia
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Actually letter "I" at the end of markings of Russian tubes means "designed for impulse operation ", but I would not worry since I never heard that they lasted only 500 hours, maybe if they are driven hard. Anyway they re cheap , eight tubes x 500 hours
Letter "E" on same place means "longlife, so next time when you buy tubes in Russia, find those...
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Old 10th December 2008, 05:50 PM   #6
Colt45 is offline Colt45  Serbia
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guaranteed 500h, at full ratings, in a tank or airplane

I'm sure they'll have long life relaxing in an amp.
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Old 10th December 2008, 06:12 PM   #7
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He he it is fun , no?

The thing have confused me is those cyrillic characters.......
Robot, please what is "E" in cyrillic ? ( and what is "I")

colt you are right, probably If I dissipate half power maybe I can hope
in 1000 hours ! A real bargain !

Cheers,
Paolo
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Old 10th December 2008, 06:25 PM   #8
Colt45 is offline Colt45  Serbia
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I'd guess more like 5-10k, but ok.
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Old 10th December 2008, 06:43 PM   #9
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Colt,

Really?
This is encouraging for me. I hope you are right!
Anyway I'll discover it very soon. I'm quasi-ready to start with PCB
and my experiment for a driver stage with 6N6.
It will dissipate about 2,2-2,4 W each section. We will see
thanks for suggestions guys!

Cheers,
Paolo
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Old 10th December 2008, 07:56 PM   #10
robot is offline robot  Croatia
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Cyrillic letter E is same like Latin, but letter I looks like this "и", or N mirrored. Actually 6n6p is really a nice tube, especially good driver of output tubes, an Eastern counterpart of another great tube, 5687. Only problem is that they have different pinouts, so we cannot swap them witihout soldering iron
I also bought some ordinary 6n6p recently from Ukraine, just as a strategic reserve ...
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