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VP13K

 
    
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The VP13K is a pre-war vari-mu RF pentode.
The outer perforated metal cylinder is the screen and the circular anode and wire grids can be seen within.
The B7 base pins.
Thanks to Mark Mallison for sending the images.
The classic envelope is 35 mm in diameter, and excluding the B7 base pins is 95 mm tall.
References: Datasheet, 1040 & 1043. Type VP13K was first introduced in 1939.

 

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
13.0
0.2
200
100
-3.0
8.0
2.6
0.9M
2.0
Updated December09, 2018.
shape:classic construction:pinch type:pentode age:1930.1940 base:b7 heater:200ma pins:7 pin:1.m pin:2.a pin:3.g3 pin:4.h pin:5.h pin:6.k pin:7.g2 pin:tc.g1
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