Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

6C33C-EB / 6C33C-EV  extended life ?
6C33C-EB / 6C33C-EV  extended life ?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 7th October 2007, 01:46 PM   #1
ger56 is offline ger56
diyAudio Member
Join Date: Sep 2004
Location: casablanca
Default 6C33C-EB / 6C33C-EV extended life ?


I Just read that the 6C33C-EB or 6C33C-ES have a 3000 hour service life instead of 1000 hour.

I did expect some reliability problems with some 6C33C-B .

Should this be an issue !


  Reply With Quote
Old 7th October 2007, 03:55 PM   #2
tubetvr is offline tubetvr
diyAudio Member
Join Date: Jan 2003
Location: Sweden
6C33C-EB or 6C33C-ES have a 3000 hour service life instead of 1000 hour.
The life time given in the data sheet is when running the tubes at max allowed parameters and within this life time the tube will still fulfill conditions that are valid for military applications. In practice there is no difference between different 6C33C tubes they are just sampled and tested differently and therefore have different classification.

For Audio usage the service life is very long, easily exceeding 10000 hours. I have used the same set of tubes in my OTL for more than 6 years without problem and even longer in a SET amplifier. My experience is that 6C33C tubes have longer life than more common power tubes like EL34.

In short, don't worry!

Regards Hans
  Reply With Quote
Old 14th October 2007, 05:54 PM   #3
NJE807 is offline NJE807  United Kingdom
diyAudio Member
Join Date: Oct 2007
The 6C33C data sheet includes an operational temp range of -60 to 100 degrees C, and also a maximum acceleration rate, (rectifier tube, jet fighters for the use of)! Unless you are trying to get 60W out of them, they should last a long time.
  Reply With Quote


6C33C-EB / 6C33C-EV  extended life ?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
6C33C-B. PP or SE ? Predator864 Tubes / Valves 475 4th June 2013 05:06 AM
6c33c PSE mark_titano Tubes / Valves 13 20th December 2010 04:49 AM
6c33c-b & 6c33c-v skybird Tubes / Valves 4 21st April 2009 06:21 AM
WTB 6c33c-b woody Swap Meet 0 20th September 2005 07:36 PM
6C33C and GM-70 Colt45 Tubes / Valves 21 20th November 2002 11:38 PM

New To Site? Need Help?

All times are GMT. The time now is 11:12 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio