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9003

Sensibly equivalent to:
CV665
See also:
Acorn Antiques
    
Extras ▼

 

Type 9003 is electrically equivalent to 'acorn' type 956 but re-engineered to B7G dimensions. The valve is classed as a vari-mu UHF receiving pentode.
The design dates to 1943 but B7G based valves were not made in the UK until the late 1940's.
Visually it can be seen that inside the miniature envelope there is a small volume taken up with the electrode assembly.
The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 36 mm tall.
Reference: Datasheet. Type 9003 was first introduced in 1943.

 

Pin Connections
B7G
1
2
3
4
5
6
7
g1
k
h
h
a
g2
k,g3,s

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vg
mAa
ra
gm
6.3
0.15
100
-3
2.7
700k
1.8
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated April 17, 2014.
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