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| CV1666Sensibly equivalent¶ to: | 
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 |  | The CV1666 is a directly heated triode. The prototype was the P610. The old GPO code is POVT93.Reference: Data-sheet. | 
 |   Pin Connections
|  | 1 | 2 | 3 | 4 | |  a | g1 | f- | f+ | 
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 |   Absolute Maximum Operating Conditions¶
|  | Vh | Ah | Va | ra | gm | μ | | 
 | 5.7 | 0.1 | 150 | 3,500 | 2.3 | 8.0 | 
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 Updated October 29, 2017. |  |