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VR95

Sensibly equivalent to:
954 CV1095
See also:
The Famous EF50 of WWII - A datasheet for the 956 - Acorn Antiques
    
Extras ▼

 

The VR95 acorn pentode was renamed the CV1095 with the advent of the Common Valve initiative from 1941. The VR indicates a valve for the UK RAF. The prototypes were the ZA2, 954 and 7642. Also marken on the envelope is the American service Type of VT-120.
In 1943 in America this valve type was re-worked onto the B7G base and issued as the 9001.
The normal 5 side pins are supplemented by pins top (a) and bottom (g1) making seven contacts in all.
The small size of these valve enabled them to operate at VHF.
The five side pins pressed into the clips of the base, a process that often caused the glass to crack and thus destroyed the valve. The central pin is the anode and the dark interior is the gettering.
The base end with the control grid pin at the centre.
The Tung-Sol name and Made in USA.
The envelope is 14 mm in diameter and, including the base pins, is 46 mm tall.
References: Datasheet.

 

Pin Connections
1
2
3
4
5
bc
tc
h
g2
g3
h
k
g1
a

 

Absolute Maximum Operating Conditions
Pentode
Vh
Ah
Va
Vs
Vg
mAa
mAs
ra
gm
μ
6.3
0.15
250
100
-3.0
1.2
0.5
1.0M
1.4
1100
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated December20, 2016.
shape:acorn construction:all.glass type:pentode age:1930.1940 base: heater:6.3v pin:1.h pin:2.g2 pin:3.g3 pin:4.h pin:5.k pin:bc.g1 pin:tc.a
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