Technical characteristics and electrical parameters:
• Heater voltage 6.3 ± 0.6 V
• Filament current 300 ± 25 mA
• Nominal anode voltage 250 V
• Anode voltage limit 275 V
• Grid voltage nominal -2 V
• Anode current 2.3 ± 0.9 mA
• The highest power dissipated at the anode 1.1 W
• The highest voltage between the cathode and the heater 100 V
• The highest leakage current between the cathode and the heater 20 μA
• Slope of characteristic 1.6 ± 0.4 mA / V
• Internal resistance 44 kOhm
• Gain 70 ± 15
• The highest resistance in the circuit of the first grid is 500 kOhm
• Input capacitance of the first triode 3 pF
• Input capacity of the second triode 3.4 pF
• Output capacitance of the first triode 3.8 pF
• Output capacitance of the second triode 3.2 pF
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