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6J4

Sensibly equivalent to:
6S2P A2209 CV1763
    
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The 6J4 was the prototype for the CV1763. It is a miniature grounded grid triode with a 2.5 Watt anode dissipation for operation into the UHF at 550 MHz.
The anode is a pair of flat based U sections that are joined by bright straps. The grid is a close pitch but not a frame grid.
The Sylvania name in green paint.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 47 mm tall.
Reference: Data-sheet. Type 6J4 was first introduced in 1950.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
k
h
h
g1
g1
a

 

Absolute Maximum Operating Conditions
Triode
Vh
Ah
Va
Vg
mAa
ra
gm
μ
6.3
0.4
165
-1.35
13.5
3,700
12.0
55
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated July 26, 2020.
shape:thin.glass.tube construction:all.glass type:triode age:1960.1975 base:b7g heater:6.3v pins:7 pin:1.g1 pin:2.k pin:3.h pin:4.h pin:5.g1 pin:6.g1 pin:7.a
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