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12Q7GTSensibly equivalent¶ to:DH76 DL74 DL74M
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The 12Q7GT double diode triode was designed for receiver audio use.The diodes would be for signal and AGC rectification and the triode would act as AGC amplifier or first audio amplifier.The wide glass tube envelope is 28 mm in diameter and, excluding the IO base pins, is 70 mm tall.References: Data-sheet, Data, 1040 & 1043. Type 12Q7GT was first introduced in 1947. See also 1947 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc |  m | h | a | a(d2) | a(d1) | nc | h | k | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm | 
| 12.6 | 0.15 | 250 | -3 | 1 | 58k | 1.2 |
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Updated January 20, 2023.
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