This VP22 from Mazda has lost its outer metallisation. This interestingly reveals a label affixed to the glass envelope.The VP22 is a directly heated battery variable-mu pentode and features the Mazda Octal base. The MO base was established as a rival to the American International Octal base.The classic envelope is 31 mm in diameter, and excluding the MO base pins, is 83 mm tall.References: Data-sheet, 1040 & 1043. Type VP22 was first introduced in 1938. See also 1938 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc |  f | nc | a | g2 | g3 | m | nc | f | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | 
| 2.0 | 0.1 | 120 | 60 | -1.5 | 1.2 | 0.32 | 1.3M | 0.8 |
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Updated January 03, 2022.
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