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The GU-62A triode is used in self-excited oscillator and power amplifier circuits of RF equipment

Cathode: directly heated, carbonized thoriated tungsten
Envelope: glass-to-metal
Cooling: forced (water for anode, air for stem, envelope and seals)
Height: at most 430 mm
Diameter: at most 177 mm
Mass: at most 7 kg


Ambient temperature, °C -10 to +55
Relative humidity at up to +25 °C, % 98

Electrical Parameters
Filament voltage, V 12
Filament current, A 105-135
Mutual conductance (at anode voltage 2 kV, anode currents 10 and 12.5 A), mA/V 50-70
Gain coefficient (at anode voltages 2 and 5 kV and anode current 5 A) 19-27
Anode current (at anode voltage 500 V and grid voltage 300 V), A, at least 10
Cutoff voltage (at anode voltage 8 kV, anode current 0.5 A), V, at most 420
Interelectrode capacitance, pF:
input, at most 80
output, at most 2.8
transfer, at most 60

Limit Operating Values
Filament voltage, V 10.8-12.6
Anode voltage (DC), kV:
at frequencies up to 30 MHz 10.5
at frequencies above 30 MHz 8
Filament starting current, A 210
Dissipation, kW:
anode 40
grid 1.8
Operating frequency, MHz 85
Temperature at envelope and stem, °C 180
Temperature at seals, °C 150

Averaged Characteristic Curves:
Uf = 12V;
_____ anode;
_ _ _ grid-anode;
Pa max

Averaged Characteristic Curves:
Uf = 12V;
_____ anode;
_ _ _ grid