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VT-231

Sensibly equivalent to:
6SN7GT
    
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This VT-231 is the US Government specification for the commercial 6SN7GT audio double triode.
The 6SN7GT is etched into the glass.
Both triode sections are fitted into a single top mica. The control grid is wound on copper supports.
The wide glass tube envelope is 29 mm in diameter, and excluding the IO base pins is 65 mm tall.
References: Datasheet, 1040 & 1043. Type VT-231 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 January 04, 2017.
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