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| CV1649Sensibly equivalent¶ to:E133 POVT65 | 
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 |  | The CV1649 is a directly heated triode and the prototype was the E133. The old GPO code is POVT65.Reference: Data-sheet. | 
 |   Pin Connections
|  | 1 | 2 | 3 | 4 | |  a | g1 | f | f | 
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 |   Absolute Maximum Operating Conditions¶
|  | Vh | Ah | Va | μ | | 
 | 4.5 | 0.82 | 150 | 9.5 | 
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 Updated October 28, 2017. |  |