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BVA246

Sensibly equivalent to:
EF39
See also:
BVA Valves
    
Extras ▼

 

BVA valves were a range of types offered for wartime civilian radio receivers and in the spirit of unity was a 'utility' device lacking in commercial branding. The BVA246 is an EF39 from Mullard. It is a variable-mu RF pentode for use as a controlled RF or IF amplifier. The frequency range of operation would be up to 30 MHz.
The reverse is plain zinc paint. Under the paint the silvery gettering can be seen within the glass.
The classic envelope is 30 mm in diameter and excluding the IO base pins it is 86 mm long.
References: Datasheet, 1040 & 1043. Type BVA246 was first introduced in 1939.

 

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

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
6.3
0.2
250
250
-2.5
6
1.7
1.5M
2.2
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 30, 2014.
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