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The VI1-40/45 rectifier tube is designed for use in pulse modulators in RF equipment

Cathode: indirectly heated, oxide-coated
Envelope: glass-to-metal
Working position: upright with anode down
Anode cooling: forced air
Height: at most 490 mm
Diameter: at most 133 mm
Mass: at most 6.5 kg


Vibration loads:
frequencies, Hz 20-80
acceleration, m/s² 75
Multiple impacts with acceleration, m/s² 443
Ambient temperature, °C -60 to +85
Relative humidity at up to +40 °C, % 98

Electrical Parameters
Heater voltage, V 27
Heater current, A 18-24
Peak anode current at pulse duration 2-10 µs and 1/duty factor 500, A:
at anode voltage change 3.8 kV, at least 40
at anode voltage change 7 kV, at least 100
Anode-cathode capacitance, pF, at most 50
Peak anode current at anode voltage change 3.8 kV, over 500 h of service, A, at least 32

Limit Operating Values
Heater voltage, V 24.3-29.7
Anode reverse voltage, kV 45
Maximum forming-line voltage, kV 45
Anode dissipation, kW 3
Maximum peak current, A:
at anode voltage change 3.8 kV 40
at anode voltage change 7 kV 100
Anode current (peak value), A 4
Anode current (average value), A 0.4
Anode current pulse duration, µs 120
Minimum warm up time, s 180
Anode temperature, °C 150

Averaged Anode Characteristic Curve:
Uf = 27V