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C3g

 
    
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The C3g is a professional HF pentode with the glass envelope encased in an aluminium screening can. The screening can is electrically connected to the central spigot of the base.
The serial number is 091197.
The Type designation and maker's name is on the dome.
The base pins are gold plated - an indication of a valve aimed at the professional or military user.
The wide glass tube envelope is 32 mm in diameter, and excluding the B8B base pins is 54 mm tall.
Reference: Datasheet. Type C3g was first introduced in 1952.

 

Pin Connections
B8B
1
2
3
4
5
6
7
8
h
g3,s
a
g2
k
g1
k
h

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
6.3
0.37
220
150
-4.5
16.0
3.3
0.3M
14.0
41
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 19, 2018.
shape:wide.glass.tube construction:all.glass type:pentode age:1950.1960 base:b8b heater:6.3v pins:8 pin:1.h pin:2.g3.s pin:3.a pin:4.g2 pin:5.k pin:6.g1 pin:7.k pin:8.h
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