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CV3908Sensibly equivalent¶ to:
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The CV3908 (commercial equivalent is the 6BH6) is a high impedance, medium gain signal amplifier pentode. It has a low heater current requirement and was designed for use in car radio and other mobile equipment.
The suppressor grid looks to be close wound - a possible dual control pentode? The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 46 mm tall.References: Data-sheet, 3002 & 1040. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |  g1 | k | h | h | a | g2 | g3 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | 
| 6.3 | 0.15 | 250 | 150 | -1 | 7.4 | 2.9 | 1.4M | 4.6 |
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Updated March 17, 2021.
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