The SP215 is an HF pentode for two volt battery sets. The SP215 is a straight pentode and the VP215 has a variable μ characteristic.
The reverse of the envelope is plain zinc paint.The balloon envelope is 45 mm in diameter, and excluding the base pins is 101 mm tall.References: Data-sheet, 4022 & 1043. Type SP215 was first introduced in 1934. See also 1934 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc |  m | g1 | g3 | f | f | nc | g2 | a |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | 
| 2.0 | 0.15 | 120 | 80 | -1.5 | 2.1 | 1.7 | 0.8M | 2.3 |
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PDF scanned from an original document held by the museum |
Updated May 05, 2023.
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