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N25Sensibly equivalent¶ to:
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The N25(DL96) is a low consumption audio output valve and dates from the 1950s. The audio output is low at 200 mW but considering the low filament power it is quite remarkable.
Made in England. The tops of the grids can be seen above the top mica and part of the grid wires can be seen above the lower mica.The thin glass tube envelope is 18 mm in diameter and, excluding the B7G base pins, is 48 mm tall.References: Data-sheet, 3002 & 1040. Type N25 was first introduced in 1953. See also 1953 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |  f- | a | g2 | nc | fct | g1 | f+ |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm | Pout | D | 
| 1.4 | 0.05 | 85 | 85 | -5.2 | 5 | 0.9 | 150,000 | 1.4 | 0.2 | 10% |
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Updated June 15, 2024.
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