Powerful beam tetrode for application in pulsed modulators of RF equipment.
General information
Cathode type: indirectly heated, oxide-coated.
Envelope: glass, with base.
Height: max 250 mm.
Diameter: max 145 mm.
Mass: max 1.3 kg.
Basic electrical parameters:
Heater voltage, V ...................................................................................... 25
Heater current, A ..................................................................................... 6.5-7.8
Peak anode current (Ua= 33 kV, Ubias=minus 0.6 kV, Ugrid2= 1.75 kV), A,min 40
Cutoff voltage (Ua= 33 kV, Ugrid2=1.75 kV, Ia=0.5 mA), V, max....................... 550
Interelectrode capacitance, pF:
input, max ..................................................................... 150
output, max ................................................................... 35
transfer, max ................................................................. 10
Limit Operating Values
Heater voltage, V ..................................................................... 23.75-26.25
Anode voltage, kV ................................................................... 33
Grid 2 voltage, kV..................................................................... 1.75
Peak grid 1 excess voltage, V .................................................. 300
Peak anode current, A, at least ................................................. 36
Power dissipation, W:
anode ................................................................................. 140
grid 2................................................................................... 45
grid 1................................................................................... 5
Pulse duration, µs.................................................................... 3
Warming time, s, at least ...................................................... 300
Envelope temperature, °C 170
