The P215 is a directly heated triode. Tungsram made this valve in England.
The reverse is plain zinc loaded screening paint.Reference: Data-sheet. Type P215 was first introduced in 1930. |
Pin Connections
| 1 | 2 | 3 | 4 |  a | g1 | f- | f+ |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | μ | 
| 2.0 | 0.2 | 150 | -7.5 | 10.0 | 4,000 | 7.0 |
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Updated July 28, 2020. shape:balloon construction:pinch type:triode age:1920.1930 base:b4 heater:2.0v pins:4 pin:1.a pin:2.g1 pin:3.f- pin:4.f+
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