STC NavigatoR / High-Voltage High-Vacuum Rectifier Tubes / Tube vi3-18/32

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VI3-18/32

PULSE RECTIFIER TUBE

The VI3-18/32 rectifier tube is used as a clipping, protective, charging and rectifying diode in stationary and mobile RF equipment

GENERAL
Cathode: indirectly heated, oxide-coated.
Envelope: glass-to-metal.
Anode cooling: forced air.
Height: at most 305 mm.
Diameter: at most 83 mm.
Mass: at most 600 g

vi3-18[32(1)00071.jpg

OPERATING ENVIRONMENTAL CONDITIONS

Vibration loads:

frequencies, Hz 5-600

acceleration, m/s² 98

Multiple impacts with acceleration, m/s² 343

Ambient temperature, °C -60 to +85

Relative humidity at up to +40 °C, % 98

BASIC DATA
Electrical Parameters

Heater voltage, V 17

Heater current, A 4.6-5.6

Peak anode current (at anode voltage charge 5 kV), A, at least 18

Anode-cathode capacitance, pF, at most 12

Peak anode current over 750 h of service, A, at least 14.5

Limit Operating Values

Heater voltage, V 15.5-18.5

Reverse voltage, kV:

pulse 32

in rectification mode 30

Peak anode current, A 18

Anode current in rectification mode
(peak value), mA 1

Anode current in rectification mode (average value), mA 200

Anode dissipation, W 75

Electrical charge of pulse, A-µs 50

Pulse duration, µs 10

Warm up time, s, at most 120

Anode temperature, °C 150

vi3-18[32(2)00081.jpg
Averaged Anode Characteristic Curve:
U_f = 17V

Characteristic Curves Showing Cooling Air Flow Rate versus Anode Dissipation (at anode temperature T_a 150°C)

OPERATING ENVIRONMENTAL CONDITIONS
Vibration loads:
frequencies, Hz	5-600
acceleration, m/s²	98
Multiple impacts with acceleration, m/s²	343
Ambient temperature, °C	-60 to +85
Relative humidity at up to +40 °C, %	98

BASIC DATA Electrical Parameters
Heater voltage, V	17
Heater current, A	4.6-5.6
Peak anode current (at anode voltage charge 5 kV), A, at least	18
Anode-cathode capacitance, pF, at most	12
Peak anode current over 750 h of service, A, at least	14.5

Limit Operating Values
Heater voltage, V	15.5-18.5
Reverse voltage, kV:
pulse	32
in rectification mode	30
Peak anode current, A	18
Anode current in rectification mode (peak value), mA	1
Anode current in rectification mode (average value), mA	200
Anode dissipation, W	75
Electrical charge of pulse, A-µs	50
Pulse duration, µs	10
Warm up time, s, at most	120
Anode temperature, °C	150