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DF11

 
    
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The DF11 is a directly heated battery pentode for use at HF and IF in radio receivers.
The makers name and logo together with the Type designation.
The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 44 mm tall.
References: Datasheet, 1040 & 1043. Type DF11 was first introduced in 1940.

 

Pin Connections
Footless
1
2
3
4
5
6
7
8
g2
g1
f(-),m,g3
-
f(+)
f(-)
-
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.2
0.025
120
60
-0
1.2
0.22
1M
0.7
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated November 27, 2014.
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