physically small twin triode tube

sphinx · 18th November 2009, 10:37 PM

I'm looking for a physically small twin triode tube to fit into a very tight space. It needs to be cheap and readily available. Any suggestions?

aardvarkash10 · 18th November 2009, 11:02 PM

google is your friend...

100 NOS RAYTHEON JAN 6418 Subminiature Twin Triode Tube - San Antonio - Bonanzle

tubelab.com · 19th November 2009, 01:35 AM

6021 is a small dual triode. I have been experimenting with them in a guitar preamp circuit. It will eventually go inside the guitar. They can be stuffed into an 8 pin round IC socket with a little pin bending.

The data sheet is too big to attach. get it here:

http://www.mif.pg.gda.pl/homepages/f...137/6/6021.pdf

sphinx · 19th November 2009, 01:35 AM

google usually is my friend, but in this case, it's not that helpful

The JAN6418 are a little too tiny. If those are sub-miniature, I guess I'm looking for "small". Perhaps 50-70% of the size of a 12AX7.

wrenchone · 19th November 2009, 01:40 AM

How about the 5670, which is in the little peanut-size envelope like a 6AK5.

sphinx · 19th November 2009, 01:51 AM

Quote:

Originally Posted by wrenchone

How about the 5670, which is in the little peanut-size envelope like a 6AK5.

5670! Yes! That's just might be the one I need. With that p/n, I found other possibilities... 6N3P 2C51 WE396A. With your help, google is my friend again

aardvarkash10 · 19th November 2009, 01:56 AM

Quote:

Originally Posted by sphinx

5670! Yes! That's just might be the one I need. With that p/n, I found other possibilities... 6N3P 2C51 WE396A. With your help, google is my friend again

Duncan amps TDSL is also a great piece of kit for this. If you know the base and envelope you want (thery are standard) you can use its search feature to identify only tubes with those features. Of course, you need to know what base and envelope code you are looking for, but once you have a lock on that it makes finding a suitable tube easier.

wrenchone · 19th November 2009, 06:06 AM

6N3P is listed as an equivalent to 5670, but it's in a more usual-sized envelope like a 6U8 or 12AX7 or similar. I know - I ran across the litle 5670 in my stash just late last night, got the data, and made the comparison.

Colt45 · 19th November 2009, 06:12 AM

yeah, american 5670 / 2c51? is smaller envelope than 6N3P. Rest is similar though.

sphinx · 19th November 2009, 02:24 PM

all good info... thanks!

18th November 2009, 10:37 PM	#1
sphinx diyAudio Member Join Date: Nov 2004 Location: Toronto, Ontario	physically small twin triode tube I'm looking for a physically small twin triode tube to fit into a very tight space. It needs to be cheap and readily available. Any suggestions? __________________ too many projects...not enough time

18th November 2009, 11:02 PM	#2
aardvarkash10 diyAudio Member Join Date: Mar 2007 Location: Auckland, NZ	google is your friend... 100 NOS RAYTHEON JAN 6418 Subminiature Twin Triode Tube - San Antonio - Bonanzle __________________ Yes, conservatism thrives on low intelligence and poor information. But the liberals in politics... continue to back off, yielding to the supremacy of the stupid. It's turkeys all the way down. - George Monbiot, guardian.co.uk, 6 Feb 2012

19th November 2009, 01:35 AM	#3
tubelab.com diyAudio Member Join Date: Jul 2005 Location: South Florida	6021 is a small dual triode. I have been experimenting with them in a guitar preamp circuit. It will eventually go inside the guitar. They can be stuffed into an 8 pin round IC socket with a little pin bending. The data sheet is too big to attach. get it here: http://www.mif.pg.gda.pl/homepages/f...137/6/6021.pdf __________________ Too much power is almost enough! Turn it up till it explodes - then back up just a little.

19th November 2009, 02:24 PM	#10
sphinx diyAudio Member Join Date: Nov 2004 Location: Toronto, Ontario	all good info... thanks! __________________ too many projects...not enough time

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19th November 2009, 01:40 AM	#5
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	How about the 5670, which is in the little peanut-size envelope like a 6AK5.

19th November 2009, 06:06 AM	#8
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	6N3P is listed as an equivalent to 5670, but it's in a more usual-sized envelope like a 6U8 or 12AX7 or similar. I know - I ran across the litle 5670 in my stash just late last night, got the data, and made the comparison.

19th November 2009, 06:12 AM	#9
Colt45 diyAudio Member Join Date: Feb 2002 Location: Canada	yeah, american 5670 / 2c51? is smaller envelope than 6N3P. Rest is similar though.

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