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EF14

 
    
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The EF14 is an RF pentode.
The Telefunken logo and the Type designation.
The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 36 mm tall.
References: Datasheet, 1040 & 1043. Type EF14 was first introduced in 1939.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.3
250
200
-4.5
12.0
1.7
0.2M
7.0
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated February 23, 2015.
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