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CV1905

Sensibly equivalent to:
4-65A QY3-65
    
Extras ▼
The CV1905 is a directly heated transmitting tetrode with a thoriated tungsten filament. The prototype was the 4-65A and the CV1905 is the same.
Reference: Data-sheet. Type CV1905 was first introduced in 1956. See also 1956 adverts.

 

Pin Connections
B7A
1
2
3
4
5
6
7
tc
f
g2
nc
g1
nc
g2
f
a

 

Absolute Maximum Operating Conditions
Tetrode
Vh
Ah
Va
Vs
Vg
mAa
6.0
3.5
3,000
400
-
150
Thanks to Frank Philipse for supplying the above PDF datasheet.
Updated January 06, 2022.
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