Double triode 6N4P is designed to amplify low frequency voltage. Miniature design in a glass bottle.

1. Heater voltage 6.3 ± 0.6 V.
2. Filament current 300 ± 40 mA.
3. Nominal anode voltage (constant) 250 V.
4. The anode voltage limit (constant) 300 V.
5. The anode voltage is limiting (constant) with a closed lamp (with an anode current of no more than 5 μA) 470 V.
6. The anode current of each triode is 3 ± 0.85 mA.
7. The cathode current of each triode is 8 mA.
8. Grid voltage nominal (constant) Minus 4 V.
9. The grid voltage is the smallest (constant) with a locked lamp (with an anode current of no more than 5 μA) Minus 30 V.
10. Grid voltage at anode current 0.01 mA Minus 8.5 V.
11. The reverse current of the grid of each triode is 0.1 μA.
12. The power dissipated by each anode is 1.5 watts.
13. The voltage between the cathode and the heater is limiting (constant):
– with a negative potential of the heater 200 V,
– with a positive potential of the heater 100 V.
14. The slope of the characteristic of each triode is 1.75 ± 0.35 mA / V.
15. The gain of each triode is 41 ± 7.
16. Resistance in the grid circuit is limiting 1 megohm.
17. The input capacitance of each triode is 1.55 ± 0.35 pF.
18. The output capacitance of the first triode is 1.4 ± 0.35 pF.
19. The output capacitance of the second triode is 1.6 ± 0.4 pF.
20. The throughput capacity of each triode is 1.6 pF.
21. The capacitance between the anodes is 0.1 pF.
22. Design – miniature glass.
23. Weight 15 g.

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