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12SG7Sensibly equivalent¶ to:See also:
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The 12SG7 is a 12.6 Volt version of the 6SG7 semi-vari mu pentode. The pins are compatible and the ratings are the same.The envelope is also marked with the American Government code of VT-209.The 12SG7 is a variable μ design with a medium gain. It was obsolete by the early 1960s.The thin metal tube envelope is 25 mm diameter, and excluding the IO base pins, is 50 mm tall.References: Data-sheet, 1040 & 1043. Type 12SG7 was first introduced in 1940. See also 1940 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | m | h | k | g1 | k | g2 | h | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | ra | gm |
| 12.6 | 0.15 | 250 | 150 | -2.5 | 9.2 | 1M | 4 |
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Updated November 28, 2013.
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