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| CV1905Sensibly equivalent¶ to: | 
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 |  | 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
|  | 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | |  f | g2 | nc | g1 | nc | g2 | f | a | 
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 |   Absolute Maximum Operating Conditions¶
|  | Vh | Ah | Va | Vs | Vg | mAa | | 
 | 6.0 | 3.5 | 3,000 | 400 | - | 150 | 
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 Updated January 06, 2022. |  |