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DK96

Sensibly equivalent to:
1AB6 1C3 X25
See also:
Pentagrid Converters - Mullard 25 mA Series Advert - 25 mA Series Valves for ABC Radios
    
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The DK96 dry battery frequency changer from Mullard is from the later range of very low filament consumption valves introduced in 1953. This example is British made. Later DK96 valves were imported. These 25 mA filament valves, introduced in the 1950s, were designed for use in battery portable domestic radio receivers. This type of radio was killed stone dead by the transistor in the early 1960s.
The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 47 mm tall.
References: Datasheet, 1040 & 3002. Type DK96 was first introduced in 1953.

 

Pin Connections
B7G
1
2
3
4
5
6
7
f-
a
g2
g1
g4
g3
f+,g5

 

Absolute Maximum Operating Conditions
Heptode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
1.4
0.025
85
68
0
0.6
0.14
0.8M
0.3
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December10, 2015.
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