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VP4B

Sensibly equivalent to:
A50P AC/VP2 CV3582 MVSPen/B W42
    
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The VP4B is a variable μ pentode for RF and IF amplifier use. The image shows the zinc screening paint starting to peel from the base.
The box design is the same as that for the HL2 with a red printed base.
The classic envelope is 38 mm in diameter and, excluding the B7 base pins, is 95 mm tall.
References: Data-sheet, 1040 & 1043. Type VP4B was first introduced in 1935. See also 1935 adverts.

 

Pin Connections
B7
1
2
3
4
5
6
7
tc
m
a
g3
h
h
k
g2
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
4.0
0.65
250
250
-3
11.5
4.25
-
2.0
Thanks to Andy Cowley for supplying the above PDF datasheet.
Updated October 07, 2020.
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