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Power - Triode (over 1000V 100W) ·Triode

F6398

Massive water-cooled ITT power triode for very-high-power RF service. Hundreds of kilowatts of plate dissipation, extremely high voltage, and multiampere current capability place it among the largest fixed transmitter tubes.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
15.5 V / 420 A

Description

The F6398 is an exceptionally high-power triode for radio-frequency amplifier, oscillator, and class-B modulator service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
15.5 V
Nominal heater current
420 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Max plate voltage
65000 V
Max plate dissipation
225000 W
Max grid dissipation
6000 W
Max cathode current
550 A

Published maximum ratings and characteristics audited; remaining numeric data retained densely in parameter table.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • is water cooled, capable of dissipating

    225

    is water cooled, capable of dissipating 225 kilowatts., The cathode is

  • a thoriated tungsten filament. Maximum ratings apply up to

    22

    a thoriated tungsten filament. Maximum ratings apply up to 22 megacycles.

  • Filament Voltage

    15.5 V

    Filament Voltage 15.5 volts

  • Filament Current

    420 A

    Filament Current 420 amperes

  • Filament Starting Current

    1000 mA

    Filament Starting Current 1000 max. amperes

  • Grid-Plate

    125

    Grid-Plate 125 ppf

  • Grid-Filament

    140

    Grid-Filament 140 puf

  • To filament seals

    40

    To filament seals 40 cfm min,

  • Maximum Glass Temperature

    180

    Maximum Glass Temperature 180 °c

  • D-C Plate Voltage

    20 V

    D-C Plate Voltage 20 kilovolts

  • D-C Grid Voltage

    -4 V

    D-C Grid Voltage -4 kilovolts

  • D-C Plate Current

    16.5 A

    D-C Plate Current 16.5 amperes

  • D-C Grid Current

    5 A

    D-C Grid Current 5 amperes

  • Plate Input

    320

    Plate Input 320 kilowatts

  • Plate Dissipation

    150 W

    Plate Dissipation 150 kilowatts

  • D~C Plate Voltage

    17 V

    D~C Plate Voltage 17 kilovolts

  • D-C Grid Voltage

    -2.5 V

    D-C Grid Voltage -2.5 kilovolts

  • Peak R-F Grid voltage

    3.55 V

    Peak R-F Grid voltage 3.55 kilovolts

  • Peak R-F Plate Voltage

    14 V

    Peak R-F Plate Voltage 14 kilovolts

  • D-C Plate Current

    16 A

    D-C Plate Current 16 amperes

  • D-C Grid Current, approx

    2.2 A

    D-C Grid Current, approx. 2.2 amperes

  • Power Output, approx

    200 W

    Power Output, approx. 200 kilowatts

  • D-C Plate Voltage

    25 V

    D-C Plate Voltage 25 kilovolts

  • Maximum Signal D-C Plate Current*

    20 mA

    Maximum Signal D-C Plate Current* 20 amperes

  • Meximum Signal Plate Input*

    500

    Meximum Signal Plate Input* 500 kilowatts

  • Plate Dissipation*

    225 W

    Plate Dissipation* 225 kilowatts

  • D-C Plate Voltage [1]

    1 V

    D-C Plate Voltage 1k 18 kilovolts

  • D-C Plate Voltage [2]

    18 V

    D-C Plate Voltage 1k 18 kilovolts

  • D~-C Grid Voltage [1]

    -675 V

    D~-C Grid Voltage -675 =830 volts

  • D~-C Grid Voltage [2]

    830 V

    D~-C Grid Voltage -675 =830 volts

  • Peak A-F Grid=-to=-Grid Voltage [1]

    2760 V

    Peak A-F Grid=-to=-Grid Voltage 2760 3320 volts

  • Peak A-F Grid=-to=-Grid Voltage [2]

    3320 V

    Peak A-F Grid=-to=-Grid Voltage 2760 3320 volts

  • Zero Signal D-C Plate Current [1]

    4 A

    Zero Signal D-C Plate Current 4 4 amperes

  • Zero Signal D-C Plate Current [2]

    4 A

    Zero Signal D-C Plate Current 4 4 amperes

  • Maximum Signal D-C Plate Current [1]

    32 mA

    Maximum Signal D-C Plate Current 32 38 amperes

  • Maximum Signal D-C Plate Current [2]

    38 mA

    Maximum Signal D-C Plate Current 32 38 amperes

  • Effective Load Resistance Plate-to-Plate [1]

    960

    Effective Load Resistance Plate-to-Plate 960 1065 ohms

  • Effective Load Resistance Plate-to-Plate [2]

    1065

    Effective Load Resistance Plate-to-Plate 960 1065 ohms

  • Maximum Signal Driving Power, approx [1]

    2 W

    Maximum Signal Driving Power, approx. 2kko 4500 watts

  • Maximum Signal Driving Power, approx [2]

    4500 W

    Maximum Signal Driving Power, approx. 2kko 4500 watts

  • Maximum Signal Power Output, approx [1]

    3500 W

    Maximum Signal Power Output, approx. 3500 480 kilowatts

  • Maximum Signal Power Output, approx [2]

    480 W

    Maximum Signal Power Output, approx. 3500 480 kilowatts

  • D=C Plate Voltage

    25 V

    D=C Plate Voltage 25 kilovolts

  • D~C Plate Current

    25 A

    D~C Plate Current 25 amperes

  • Plate Input

    500

    Plate Input 500 kilowatts

  • Plate Dissipation

    225 W

    Plate Dissipation 225 kilowatts

  • D-C Plate Voltage

    18 V

    D-C Plate Voltage 18 kilovolts

  • D=C Grid Voltage

    -23 V

    D=C Grid Voltage -2,3 kilovolts

  • Peak R-F Grid Voltage

    3.6 V

    Peak R-F Grid Voltage 3.6 kilovolts

  • D«C Plate Current

    24 A

    D«C Plate Current 24 amperes

  • D-C Grid Current, approx,

    3.6 A

    D-C Grid Current, approx, 3.6 amperes

  • Driving Power, approx

    11 W

    Driving Power, approx. 11 kilowatts

  • Power Out, approx,

    325 W

    Power Out, approx, 325 kilowatts

  • D-C Plate Voltage

    30 V

    D-C Plate Voltage 30 kilovolts

  • D-C Grid Voltage

    -8 V

    D-C Grid Voltage -8 kilovolts

  • Peak Cathode Current

    400 A

    Peak Cathode Current 400 amperes

  • Pulse Length

    10

    Pulse Length .010 Beconds

  • D-C Plate Voltage

    25 V

    D-C Plate Voltage 25 kilovoltas

  • D~-C Grid Voltage

    -5 V

    D~-C Grid Voltage -5 kilovoltse

  • D-C Plate Current (during Pulse)

    75 A

    D-C Plate Current (during Pulse) 75 amperes

  • D~C Grid Current (during Pulse)

    10 A

    D~C Grid Current (during Pulse) 10 amperes

  • Peak Power Output

    1300 W

    Peak Power Output 1300 kilowatts

  • D-C Plate Voltage [1]

    65 V

    D-C Plate Voltage 65 65 max, kilovolts

  • D-C Plate Voltage [2]

    65 V

    D-C Plate Voltage 65 65 max, kilovolts

  • Peak Positive Voltage (Instantaneous) T0

    70 V

    Peak Positive Voltage (Instantaneous) T0 70 max, kilovolts

  • D-C Grid Voltage [1]

    -8 V

    D-C Grid Voltage -8 -8 max. kilovolts

  • D-C Grid Voltage [2]

    -8 V

    D-C Grid Voltage -8 -8 max. kilovolts

  • Peak Positive Grid Voltage

    8 V

    Peak Positive Grid Voltage 8 max, kilovolts

  • Pulse Plate Current [1]

    350 A

    Pulse Plate Current 350 ##450 wax, amperes

  • Pulse Plate Current [2]

    450 A

    Pulse Plate Current 350 ##450 wax, amperes

  • Pulse Grid Current [1]

    150 mA

    Pulse Grid Current 150 *%250 max, amperes

  • Pulse Grid Current [2]

    250 mA

    Pulse Grid Current 150 *%250 max, amperes

  • Pulse Cathode Current %

    550 mA

    Pulse Cathode Current %550 max, amperes

  • Grid Dissipation

    6 W

    Grid Dissipation 6 max. kilowatts

  • Pulse Length [1]

    15

    Pulse Length 15 15 max. usec.

  • Pulse Length [2]

    15

    Pulse Length 15 15 max. usec.

  • D-C Plate Voltage

    50 V

    D-C Plate Voltage 50 kilovolts

  • Pulse Plate Current

    300 A

    Pulse Plate Current 300 amperes

  • Pulse Grid Current

    90 A

    Pulse Grid Current 90 amperes

  • Pulse Positive Grid Voltage

    3 V

    Pulse Positive Grid Voltage 3 kilovolts

  • Pulse Length

    10

    Pulse Length 10 usec.

  • Plate Output Voltage

    4 V

    Plate Output Voltage 4 kilovolts

  • filament temperatures - Ef =

    16.75

    filament temperatures - Ef = 16.75 v.

  • Published value [1]

    3

    3/4 min, grid

  • Published value [2]

    4

    3/4 min, grid

  • F

    6398 W

    F-6398 POWER TRIODE