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8P13A

 
    
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The 8P13A is believed to be a screened amplifier pentode introduced in 1938 and a variant of the 13SP. This version has the Ct8 base and the similar Mullard SP13C has a B7 base. The use would have been for IF amplification in radio receivers.
The classic envelope is 41 mm in diameter and, excluding the Ct8 base pins, is 101 mm tall.
References: Private communication. Type 8P13A was first introduced in 1938.

 

Pin Connections
Ct8
1
2
3
4
5
6
7
8
tc
m
h
h
k
g3
-
g2
a
g1

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
ra
gm
13.0
0.2
200
100
-
3
1.3M
2.2
Updated December31, 2012.
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