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6SN7GT

Sensibly equivalent to:
13D2 B65 CV1988 VT-231
    
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The 6SN7GT is a glass tubular version of the 6SN7 double triode valve. Each half of the 6SN7 is electrically equal to the 6J5 triode.
The construction uses a glass pinch and two separate electrode structures are visible through the envelope, the cathodes are separate.
The 6SN7 was designed for audio applications and is still used for valve hi-fi.
The American Government procurement code is VT-231.
The triode sections are flat sided with rounded ends. For heat radiation and ease of support the anode is pressed with a side flange that also provides the place for the two halves to be stitched together.
The anodes are 7 mm wide.
The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 67 mm tall.
References: Datasheet, 1040 & 1043. Type 6SN7GT 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 August 13, 2017.
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