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

3CW5000F3

Water-cooled ceramic-metal industrial power triode for high-power RF generation, amplification, or modulation. Its manufacturer ratings emphasize continuous transmitting duty with high plate dissipation and substantial power handling.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 50 A

Description

The Eimac 3CW5000F3/3CW5000F3 is a medium-mu water-cooled power triode for amplifier, oscillator, modulator, and RF power service, with flexible grid and filament leads.

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
7.5 V
Nominal heater current
50 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
Transconductance
0.02 S
Amplification factor
22
Max plate voltage
6000 V
Max plate dissipation
5000 W
Max grid dissipation
150 W
Max cathode current
2.5 A

Promoted from printed general-characteristics and maximum-ratings blocks.

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 Eimac

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification factor

    20

  • Transconductance

    20000 uS

Other

  • Maximum DC plate voltage

    6000 V

  • Maximum plate dissipation

    5000 W

  • Representative maximum-signal plate current

    2.5 A

Data set 02

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification factor

    22

  • Transconductance

    20000 uS

  • Heater/filament voltage

    7.5 V

  • Heater/filament current

    50 A

Other

  • Maximum plate voltage

    6000 V

  • Maximum plate dissipation

    5000 W

  • Maximum grid dissipation

    150 W

  • Maximum cathode/plate current

    3.2 A

  • Frequency for maximum ratings

    30 MHz

  • Typical RF plate voltage

    6000 V

    ClassC

  • Typical AF max-signal plate current

    3 A

    ClassB

Capacitance

  • Input/grid-filament capacitance

    35 to 35 pF

  • Output/plate-filament capacitance

    0.9 to 0.9 pF

  • Feedback/grid-plate capacitance

    20 to 20 pF

Construction

  • Cooling

    Water and forced air

Data set 03

1976 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification factor

    22

  • Transconductance

    20000 uS

  • Heater/filament voltage

    7.5 V

  • Heater/filament current

    50 A

Other

  • Maximum plate voltage

    6000 V

  • Maximum plate dissipation

    5000 W

  • Maximum grid dissipation

    150 W

  • Maximum cathode/plate current

    3.2 A

  • Frequency for maximum ratings

    30 MHz

  • Typical RF plate voltage

    6000 V

    ClassC

  • Typical AF max-signal plate current

    3 A

    ClassB

Capacitance

  • Input/grid-filament capacitance

    35 to 35 pF

  • Output/plate-filament capacitance

    0.9 to 0.9 pF

  • Feedback/grid-plate capacitance

    20 to 20 pF

Construction

  • Cooling

    Water and forced air