GU62A
TRIODE
The GU62A triode is used in selfexcited oscillator and power amplifier circuits of RF equipment
GENERAL
Cathode: directly heated, carbonized thoriated tungsten
Envelope: glasstometal
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
OPERATING ENVIRONMENTAL CONDITIONS  
Ambient temperature, °C  10 to +55 
Relative humidity at up to +25 °C, %  98 
BASIC DATA Electrical Parameters 

Filament voltage, V  12 
Filament current, A  105135 
Mutual conductance (at anode voltage 2 kV, anode currents 10 and 12.5 A), mA/V  5070 
Gain coefficient (at anode voltages 2 and 5 kV and anode current 5 A)  1927 
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  10.812.6 
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:
U_{f} = 12V;
_____ anode;
_ _ _ gridanode;
— • — P_{a max}
Averaged Characteristic Curves:
U_{f} = 12V;
_____ anode;
_ _ _ grid