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W76

Sensibly equivalent to:
12K7GT KTW74M
    
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The W76 variable-mu screened pentode was designed for intermediate frequency amplifiers in superhet type receivers. Although the manufacturers name is missing this valve would originally have carried the Marconi name.
The W76 is high impedance allowing for a high Q in the tuned anode circuit.
The wide glass tube envelope is 27 mm in diameter and excluding the IO Base pins the valve is 88 mm long.
References: Datasheet, 3002, 1040 & 1043. Type W76 was first introduced in 1945.

 

Pin Connections
IO
1
2
3
4
5
6
7
8
m
h
a
g2
g3
nc
h
k

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
13.0
0.16
175
100
-3
8.5
1.7
0.5M
1.5
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 25, 2013.
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