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EF13

 
    
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The EF13 is a continental valve that was not used in the UK. It is a low noise RF pentode. It and similar constructed valves were used in German domestic radios during WWII.
The wide metal envelope is 34 mm in diameter and, excluding the Footless base pins, is 35 mm tall.
References: Datasheet & 1040. Type EF13 was first introduced in 1938.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
6.3
0.2
250
200
-2
4.5
0.6
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December03, 2012.
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