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7B7

Sensibly equivalent to:
CV522 W149
See also:
American Loctal Valves
    
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The 7B7 is a high impedance variable μ amplifier pentode. It was designed for RF & IF amplifier use, with a tuned anode circuit.
The wide glass tube envelope is 29 mm in diameter and, excluding the B8B base pins, is 56 mm tall.
References: Datasheet & 1040.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.15
250
100
-3
8.5
1.7
0.75M
1.75
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated August 24, 2015.
shape:wide.glass.tube construction:all.glass type:pentode age:1940.1950 base:b8b heater:6.3v pins:8 pin:1.h pin:2.a pin:3.g2 pin:4.g3 pin:5.s pin:6.g1 pin:7.k pin:8.h
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