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CV3885

Sensibly equivalent to:
EF40
    
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The CV3885 is the UK Government procurement designation for the Mullard EF40 that is described as a voltage amplifying pentode, primarily intended for use in high gain RC coupled AF voltage amplifier stages.
The thin glass tube envelope is 20 mm in diameter and, excluding the B8A base pins, is 52 mm tall.
References: Datasheet & 1040.

 

Pin Connections
B8A
1
2
3
4
5
6
7
8
h
a
ic
g3
g1
g2
k,s
h

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
gm
6.3
0.2
250
140
-2
3.0
0.6
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated October 14, 2013.
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