Filament voltage, V

6.3

Anode voltage, V

250

Bias grid voltage, V

-45

Filament (heater) current, A

1±0.015

Anode current, mA

62±20

Mutual conductance, mA/V

5.4±1.4

Gain coefficient

4.15±0.35

Inner resistance, Ohm

840±280

Output power at grid voltage 31 V and anode resistance 2.5 kOhm, kW, at least

2.8

Output power at filament voltage 5.7 V,

W, at least

2.25

Cathode emission current, mA, at least

140

Reverse grid current, mkA

<5

Grid insulation resistance, MOhm, at least

20

Anode insulation resistance, MOhm, at least

20

Maximum filament voltage, V

6.9

Minimum filament voltage, V

5.7

Maximum anode voltage, V

360

Maximum anode dissipation, W

15