Technical characteristics and electrical parameters:

• Heater voltage 6.3 ± 0.6 V

• Filament current 600 ± 50mA

• Nominal anode voltage 250 V

• Anode voltage limit 330 V

• Nominal grid voltage -8 V

• Anode current 9 ± 3.5 mA

• The highest power dissipated at the anode of the triode 2.75 W

• Highest DC voltage between cathode and heater 100 V

• The highest leakage current between the cathode and the heater 20 μA

• Slope of characteristic 2.6 ± 0.53 mA / V

• Internal resistance 7700 Ohm

• Gain 20.5 ± 2.5

• Highest cathode current 20 mA

• The highest resistance in the circuit of the first grid is 500 kOhm

• Input capacitance of the first triode 2.8 pF

• Input capacitance of the second triode 3 pF

• Output capacitance of the first triode 0.8 pF

• Output capacitance of the second triode 1.2 pF

• Capacitance through the first triode 3.8 pF

• Capacitance through the second triode 4 pF

• Glass decoration