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

F6925

Medium-mu ITT power triode designed for RF service. Approximately 3 kW plate dissipation and multi-kilovolt plate capability support substantial Class C amplifier operation and professional transmitter power.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
13 V / 36 A

Description

Triode designed for modulator, radio-frequency amplifier, and oscillator service, with a heavy-wall forced-air-cooled anode rated for 3 kW continuous-commercial-service dissipation.

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
13 V
Nominal heater current
36 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
17
Max plate voltage
6500 V
Max plate dissipation
3000 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

    6525 W

    TUBE DATA 6525 POWER TRIODE

  • Filament Voltage

    13 V

    Filament Voltage 13 volts

  • Filament Current

    36 A

    Filament Current 36 amperes

  • Grid-Plate

    21

    Grid-Plate 21 ppf

  • Grid-Filament

    18

    Grid-Filament 18 upf

  • Plate-Filament

    1.9

    Plate-Filament 1.9 puf

  • Plate Dissipation - kw [1]

    3 kW

    Plate Dissipation - kw 3.0 2.4 1.8

  • Plate Dissipation - kw [2]

    2.4 kW

    Plate Dissipation - kw 3.0 2.4 1.8

  • Plate Dissipation - kw [3]

    1.8 kW

    Plate Dissipation - kw 3.0 2.4 1.8

  • Meximum Glass Temperature

    180

    Meximum Glass Temperature 180°¢c

  • D-C Plate Voltage

    6.5 kV

    D-C Plate Voltage 6.5 max. kv

  • D-C Grid Voltage

    -1.2 kV

    D-C Grid Voltage -1.2 max, kv

  • D-C Plate Current

    2 A

    D-C Plate Current 2.0 max. amperes

  • D-C Grid Current

    250 A

    D-C Grid Current 250 max. amperes

  • Plate Input

    12 kW

    Plate Input 12 max, kw

  • Plate Dissipation

    3 kW

    Plate Dissipation 3 mwax., kw

  • D-C Plate Voltage [1]

    2500 V

    D-C Plate Voltage 2500 4000 6000 volts

  • D-C Plate Voltage [2]

    4000 V

    D-C Plate Voltage 2500 4000 6000 volts

  • D-C Plate Voltage [3]

    6000 V

    D-C Plate Voltage 2500 4000 6000 volts

  • D~-C Grid Voltage [1]

    -600 V

    D~-C Grid Voltage -600 -1000 volts

  • D~-C Grid Voltage [2]

    -1000 V

    D~-C Grid Voltage -600 -1000 volts

  • Peak R-F Grid Voltage [1]

    1050 V

    Peak R-F Grid Voltage 1050 1300 1500 volts

  • Peak R-F Grid Voltage [2]

    1300 V

    Peak R-F Grid Voltage 1050 1300 1500 volts

  • Peak R-F Grid Voltage [3]

    1500 V

    Peak R-F Grid Voltage 1050 1300 1500 volts

  • Peak R-F Plate Voltage [1]

    1800 V

    Peak R-F Plate Voltage 1800 3000 5000 volts

  • Peak R-F Plate Voltage [2]

    3000 V

    Peak R-F Plate Voltage 1800 3000 5000 volts

  • Peak R-F Plate Voltage [3]

    5000 V

    Peak R-F Plate Voltage 1800 3000 5000 volts

  • D-C Plate Current [1]

    1.27 A

    D-C Plate Current 1.27 1.6 1.6 amperes

  • D-C Plate Current [2]

    1.6 A

    D-C Plate Current 1.27 1.6 1.6 amperes

  • D-C Plate Current [3]

    1.6 A

    D-C Plate Current 1.27 1.6 1.6 amperes

  • D-C Grid Current [1]

    233 A

    D-C Grid Current 233 .230 .210 amperes

  • D-C Grid Current [2]

    230 A

    D-C Grid Current 233 .230 .210 amperes

  • D-C Grid Current [3]

    210 A

    D-C Grid Current 233 .230 .210 amperes

  • Driving Power, approx [1]

    245 W

    Driving Power, approx. 245 300 315 watts

  • Driving Power, approx [2]

    300 W

    Driving Power, approx. 245 300 315 watts

  • Driving Power, approx [3]

    315 W

    Driving Power, approx. 245 300 315 watts

  • Power Output, approx [1]

    215 kW

    Power Output, approx. 2,15 b T.25 kw

  • Power Output, approx [2]

    25 kW

    Power Output, approx. 2,15 b T.25 kw

  • Lo2 TYPES F [1]

    6925 W

    Lo2 TYPES F-6925, F-6926 & F-6926J POWER TRIODES

  • Lo2 TYPES F [2]

    6926 W

    Lo2 TYPES F-6925, F-6926 & F-6926J POWER TRIODES

  • Lo2 TYPES F [3]

    6926 W

    Lo2 TYPES F-6925, F-6926 & F-6926J POWER TRIODES

  • GRID TERM. --=- BILACK [1]

    1.5

    GRID TERM. --=- BILACK 1.500%.125 §ia,

  • GRID TERM. --=- BILACK [2]

    125

    GRID TERM. --=- BILACK 1.500%.125 §ia,

  • TYPE F

    6925 W

    TYPE F-6925 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

    21 pF

  • GridFilamentCapacitance

    18 pF

  • PlateFilamentCapacitance

    1.9 pF

Other

  • Maximum DC Grid Voltage

    -1.2 kV

    ClassC

  • Maximum DC Plate Current

    2 A

    ClassC

  • Maximum DC Grid Current

    250 mA

    ClassC

  • Maximum Plate Input

    12 kW

    ClassC

  • Typical Power Output

    7.25 kW

    ClassC