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CV1694Sensibly equivalent¶ to:
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The CV1694 (commercially the 3A/144A) is a directly heated triode with a five Watt anode dissipation. The prototype was the 4104D. It is a replacement for use in older telephone repeaters. The old GPO code is POVT132.
The filament is oxide coated whereas the 4101D was a bright emitter. The serial number is 79.The classic envelope is 44 mm in diameter, and excluding the UV base pins is 101 mm tall.Reference: Data-sheet. Type CV1694 was first introduced in 1946. See also 1946 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 |  g1 | f1 | f+ | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | ra | gm | μ | 
| 4.5 | 1.0 | 160 | 2,000 | 1.15 | 2.35 |
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Updated January 03, 2026.
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