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6BD6

 
    
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The 6BD6 is a vari-μ pentode for use as an IF amplifier with gain controlled by an AGC voltage.
The control grid is wound on copper supports.
The top notch in the solid screen reveals the three wire grids.
The thin glass tube envelope is 18 mm in diameter and, excluding the base pins, is 45 mm tall.
References: Data-sheet. Type 6BD6 was first introduced in 1946.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
g3,s
h
h
a
g2
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
100
-3.0
9.0
3.0
0.8M
2.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 22, 2020.
shape:thin.glass.tube construction:all.glass type:pentode age:1930.1940 base:b7g heater:6.3v pins:7 pin:1.g1 pin:2.g3.s pin:3.h pin:4.h pin:5.a pin:6.g2 pin:7.k
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