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GU-56

TRIODE

The GU-56 triode is used as an oscillator and a power amplifier in stationary industrial RF heating generators and other RF equipment at frequencies up to 45 MHz

GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glass-to-metal.
Height: at most 280 mm.
Diameter: at most 161 mm.
Mass: at most 4 kg

gu-561.jpg

OPERATING ENVIRONMENTAL CONDITIONS
Ambient temperature, °C -10 to +35
Relative humidity at up to +25 °C 80

BASIC DATA
Electrical Parameters
Filament voltage, V 6.3
Filament current, A 21.5-26.5
Mutual conductance (at anode voltage 300 V, anode currents 1.5 and 1 A), mA/V 6-10
Gain coefficient (at anode voltages 300 and 1,000 V and anode current 1 A) 11-19
Anode current (at anode voltage 300 V and grid voltage 250 V), A, at least 1.5
Cutoff voltage (at anode voltage 3 kV and anode current 0.1 A), V, at most -150
Interelectrode capacitance, pF:
input, at most 30
output, at most 20
transfer, at most 0.8

Limit Operating Values
Filament voltage, V 6-6.6
Anode voltage, V 3.5
Dissipation, W:
anode 700
grid 200
Operating frequency, MHz 45
Anode temperature, °C 250
Temperature at glass parts and seals, °C 150

gu-56(2)1.jpg
Averaged Characteristic Curves:
Uf = 6.3V;
_____ anode-grid;
_ _ _ grid

gu-56(2)2.jpg
Averaged Anode Characteristic Curves:
Uf = 6.3V;
— . — Pa max

gu-56(2)3.jpg
Averaged Grid-Anode Characteristic Curves:
Uf = 6.3V