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EL81 Pinout
basing pinout
Note: pins 1, 6, and 7 are internal connections

 
EL81 Substitutes
Close or identical 6CJ6, CV10326, CV2721

Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application.

 
EL81 Ratings
Vh
V		 Ih
A		 VaPeak
V		 PaMax
W		 Pg2Max
W
6.3 1.05 7,000 8.0 4.5

 
EL81 Application Data
Class Va
V		 Vg2
V		 Vg1
V		 Ia
mA		 Ig2
mA		 Ra
Ω		 S
mA/V		 Zout
Ω		 Pout
W		 THD
%
A S/E 250 250 -38.5 32.0 2.4 15,000 4.6 7,800 3.3 10
Line output 250 250 32.0 2.4

 
EL81 Data sheet links
The Valve Museum EL81: html
oldradio.qrz.ru EL81: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 6CJ6: 6CJ6.pdf (380359 bytes)  EL81: EL81.pdf (162876 bytes), EL81.pdf (35631 bytes), EL81.pdf (404534 bytes) (cs), EL81.pdf (42751 bytes) (fr), EL81.pdf (50728 bytes)

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details

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