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

6949

Extremely high-power transmitting triode for continuous-wave RF service. Published operation reaches approximately 500 kW CW output, with about 20 kV plate operation and extraordinary hundreds-of-kilowatts dissipation capability for the largest fixed transmitters.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.9 V / 1100 A

Description

High-frequency or high-power triode for oscillator, RF, or transmitting service. The supplied datasheet was reviewed for heater/filament data, maximum ratings, operating conditions, capacitances, pulse/RF data, and thermal limits.

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
7.9 V
Nominal heater current
1100 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
20000 V
Max plate dissipation
400000 W
Max cathode current
57 A

Published maximum ratings and characteristics promoted directly from the supplied datasheet; additional operating data retained in parameters.

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

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • 500-KW CW POWER OUTPUT

    500

    CW

  • Current at 7.3 volts — published value 1

    7.3 A

    Published datasheet value

  • Current at 7.3 volts — published value 2

    1040 A

    Published datasheet value

  • Current at 7.8 volts — published value 1

    7.8 A

    Published datasheet value

  • Current at 7.8 volts — published value 2

    1130 A

    Published datasheet value

  • Starting current

    1700 A

    Published datasheet value

  • Cold resistance — published value 1

    0 ohm

    Published datasheet value

  • Cold resistance — published value 2

    13 ohm

    Published datasheet value

  • volts .= -50 and do plate voltage

    -50

    Published datasheet value

  • Grid to plate

    12

    Published datasheet value

  • Grid to filament

    1300

    Published datasheet value

  • Plate to filament

    160

    Published datasheet value

  • temperature to 150° C. Forced-air cool ing of the output

    150

    Published datasheet value

  • Minimum Plate-Water~olumn Resistance — published value 1

    1000 V

    Published datasheet value

  • Minimum Plate-Water~olumn Resistance — published value 2

    2000 V

    Published datasheet value

  • DC Plate Voltage

    18000

    Published datasheet value

  • DC Grid Voltage (Approx.)'

    -300

    Published datasheet value

  • Zero-Signal DC Plate Current

    5 A

    Published datasheet value

  • Effective RF Load Resistance

    170 ohm

    Published datasheet value

  • Average do plate current

    37 A

    Published datasheet value

  • Average do grid current

    220 mA

    Published datasheet value

  • Peak envelope rf grid voltage

    1900

    Published datasheet value

  • Average power output (Approx )

    300000 W

    Published datasheet value

  • Peak envelope power output (Approx.)

    600000 W

    Published datasheet value

  • DC Plate Voltage

    17500

    Published datasheet value

  • Peak RF Grid Voltage

    2000

    Published datasheet value

  • DC Plate Current

    40 A

    Published datasheet value

  • DC Grid Current

    1 A

    Published datasheet value

  • Useful Power Output (Approx.)

    500000 W

    Published datasheet value

  • Filament Current — published value 1

    1 A

    Published datasheet value

  • Filament Current — published value 2

    870 A

    Published datasheet value

  • Filament Current — published value 3

    1100 A

    Published datasheet value

  • Amplification Factor — published value 1

    12 A

    Published datasheet value

  • Amplification Factor — published value 2

    48 A

    Published datasheet value

  • Amplification Factor — published value 3

    74 A

    Published datasheet value

  • Grid to plate

    20

    Published datasheet value

  • Grid to filament — published value 1

    1150

    Published datasheet value

  • Grid to filament — published value 2

    1550

    Published datasheet value

  • Plate to filament — published value 1

    140

    Published datasheet value

  • Plate to filament — published value 2

    170

    Published datasheet value

  • x ote 1 — published value 1

    1

    Published datasheet value

  • x ote 1 — published value 2

    7.9

    Published datasheet value

  • Note 2 — published value 1

    2

    Published datasheet value

  • Note 2 — published value 2

    -50

    Published datasheet value

  • frequency envelope does not exceed 1155 of the carrier conditions

    1155

    Published datasheet value

  • of 0.1 second al l grid power in the event of excessive grid

    0.1 s

    Published datasheet value

  • protective device for removal of plate voltage from the 6949

    6949

    Published datasheet value

  • RETURN TERMINAL

    6.3

    Published datasheet value

  • FILAMENT FLANGE

    1

    Published datasheet value

  • NOTE 4

    4

    Published datasheet value

Other

  • the maximum temperature rating of 150° C, particularly

    150 mA

    Published datasheet value

  • Outlet Water Temperature (Anyoutlet)

    70 mA

    Published datasheet value

  • Ceramic-Bushing Temperature

    150 mA

    Published datasheet value

  • Metal-Surface Temperature

    150 mA

    Published datasheet value

  • MAX.-SIGNAL DC PLATE CURRENT

    60 mA

    Published datasheet value

  • MAX.-SIGNAL PLATE INPUT

    1100 A

    Published datasheet value

  • MAX.-SIGNAL DC GRID CURRENT

    1.5 mA

    Published datasheet value

  • PLATE DISSIPATION (Average)

    400 A

    Published datasheet value

  • Max.-signal do plate current

    57 A

    Published datasheet value

  • Max.-signal do grid current

    350 mA

    Published datasheet value

  • Max.-signal peak rf grid voltage

    1900

    Published datasheet value

  • Max.-signal power output (Approx.)

    600000 W

    Published datasheet value

  • DC PLATE VOLTAGE

    20 A

    Published datasheet value

  • DC GRID VOLTAGE

    -1 A

    Published datasheet value

  • DC PLATE CURRENT

    50 mA

    Published datasheet value

  • PLATE INPUT

    1000 A

    Published datasheet value

  • PLATE DISSIPATION

    400 A

    Published datasheet value