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

F6921

Very low-mu high-current ITT power triode for substantial Class B amplifier service. Approximately 30 kW plate dissipation, 15 kV capability, and multiampere current handling emphasize powerful linear and modulator operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5 V / 260 A

Description

Three-electrode modulator tube with a circulating-water-cooled anode capable of 30 kW dissipation. Ratings are specified for audio-frequency use.

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
5 V
Nominal heater current
260 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
Amplification factor
4.25
Max plate voltage
15000 V
Max plate dissipation
30000 W

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

  • TUBE DATA r

    6021 W

    TUBE DATA r-6021 POWER

  • The anode is capable of dissipating

    30 kW

    The anode is capable of dissipating 30 kw during Continuous Commercial

  • Filament Voltage

    5 V

    Filament Voltage 5 volts

  • Filament Current

    260 A

    Filament Current 260 amperes

  • Grid-Plate

    53

    Grid-Plate 53 uuf

  • Grid-Filament

    48

    Grid-Filament 48 puf

  • Maximum Glass Temperature

    180

    Maximum Glass Temperature 180°c

  • D-C Plate Voltage

    15 kV

    D-C Plate Voltage 15 max, kv

  • Maximum Signal D-C Plate Current¥

    10 A

    Maximum Signal D-C Plate Current¥ 10 amperes

  • Maximum Signal Plate Input#*

    60 kW

    Maximum Signal Plate Input#* 60 kw

  • Plate Digsipation*

    30 kW

    Plate Digsipation* 30 kw

  • D-C Plate Voltage

    10000 V

    D-C Plate Voltage 10,000 volts

  • D-C Grid voltage

    -2400 V

    D-C Grid voltage -2,400 volts

  • Peak A-F Grid-to-Grid vVoltage

    4680 V

    Peak A-F Grid-to-Grid vVoltage 4,680 volts

  • Zero Signal D-C Plate Current

    2 A

    Zero Signal D-C Plate Current 2.0 amperes

  • Maximum Signal D-C Plate Current

    9.5 A

    Maximum Signal D-C Plate Current 9.5 amperes

  • Effective Load, Resistance Plate~to-Plate

    1870

    Effective Load, Resistance Plate~to-Plate 1870 ohms

  • Maximum Signal Driving Power

    0 W

    Maximum Signal Driving Power 0 watts

  • Maximm Signal Power Output

    52.5 kW

    Maximm Signal Power Output 52.5 kw

  • D-C Plate Voltage

    12500 V

    D-C Plate Voltage 12,500 volts

  • D~C Grid Voltage

    -3200 V

    D~C Grid Voltage -3,200 volts

  • Peak A-F grid-to-Grid Voltage

    6100 V

    Peak A-F grid-to-Grid Voltage 6,100 volts

  • Zero Signal D-C Plate Current

    1.5 A

    Zero Signal D-C Plate Current 1.5 amperes

  • Maximum Signal D-C Plate Current

    45 A

    Maximum Signal D-C Plate Current 4,5 amperes

  • Effective Il.oad Resistance Plate-to-Plate T4

    0

    Effective Il.oad Resistance Plate-to-Plate T400 ohms

  • Load Power Factor [1]

    0 W

    Load Power Factor 0 - 100%

  • Load Power Factor [2]

    100 W

    Load Power Factor 0 - 100%

  • Published value [1]

    7 W

    7 F-6921 POWER TRIODE

  • Published value [2]

    6921 W

    7 F-6921 POWER TRIODE

Data set 02

1962 ITT Industrial and Transmitting Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • GridPlateCapacitance

    53 pF

  • GridFilamentCapacitance

    48 pF

  • PlateFilamentCapacitance

    7.5 pF

Other

  • MaximumSignalDCPlateCurrent

    20 A

    ClassAB

  • MaximumSignalPlateInput

    60 kW

    ClassAB

  • TypicalMaximumSignalPowerOutput

    52.5 kW

    ClassAB