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CV1988

Sensibly equivalent to:
6SN7GT B65 CV278 CV3627 VT-231
    
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The CV1988 is the UK government Common Valve version of the 6SN7GT double triode valve. Each half of the valve is electrically equal to the 6J5 triode.
Our other CV1988 is constructed differently.
The construction uses a glass pinch and the two separate electrode structures are visible through the envelope.
The wide glass tube envelope is 27 mm in diameter and, excluding the IO base pins, is 63 mm tall.
References: Datasheet, 1040 & 1043. Type CV1988 was first introduced in 1941.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
g1(2)
a(2)
k(2)
g1(1)
a(1)
k(1)
h
h

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.8
250
-0
3
7.7k
1.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 11, 2013.
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