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12J5GT

Sensibly equivalent to:
CV535 VT-135
    
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The 12J5GT is a single triode with a heater designed for possible use with vehicle supplies.
The electrical characteristics of each half of the 6SN7 match those of the 12J5.
The base also carries the VT-135 identification and the fact that this valve was made for the military. The anode can be seen to have a small depth from front to back.
The carbonised anode is held together with stitches. The grid has a heat radiating fin across the supports.
The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 65 mm tall.
References: Datasheet & 1040.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
nc
g1
nc
h
k

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
12.6
0.15
250
-8
9
7.7K
2.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated September 12, 2013.
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