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

3CW30000H3

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
6.3 V / 162 A

Description

The EIMAC 3CW30000H3 is a water-cooled ceramic/metal industrial medium-mu power triode with 30 kw plate 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
6.3 V
Nominal heater current
162 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
20
Max plate voltage
12000 V
Max plate dissipation
30000 W
Max grid dissipation
500 W
Max cathode current
6 A

Single triode section; promoted values mapped from printed General Characteristics and Maximum Ratings headings.

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

Characteristics

  • The Eimac 3CW30,000H3 is a water-cooled, ceramic-metal power

    3 a

    | The Eimac 3CW30,000H3 is a water-cooled, ceramic-metal power

  • structure is rated at 500 watts making this tube an excellent choice for

    500 watts

    | structure is rated at 500 watts making this tube an excellent choice for

  • Current

    152 A

    GeneralCharacteristics | Current - - - - - 152 172 A

  • Amplification Factor

    20

    GeneralCharacteristics | Amplification Factor- - - - 20

  • Grid-Filament

    48 pF

    GeneralCharacteristics | Grid-Filament - - - - 48 58 pF

  • Plate-Filament

    1.2 pF

    GeneralCharacteristics | Plate-Filament - - - - 1.2 1.5 pF

  • Grid-Plate

    30 pF

    GeneralCharacteristics | Grid-Plate - - - - - 30 38 pF

Other

  • Ceramic-to-Metal Seals

    250 °C

    | Ceramic-to-Metal Seals - - - - - - - - <+ - - . 250°C

  • Net Weight

    12 pounds

    | Net Weight - - = - - - < s - o« o o o o o . 12 pounds

  • (Effective 11-1-68) © 1965, 1968 by Varian Printed in U.S.A

    11 A

    | (Effective 11-1-68) © 1965, 1968 by Varian Printed in U.S.A.

  • Class-C {Filtered DC Power Supply) DC Plate Voltage 7000 10,000 volts

    7000 volts

    RF INDUSTRIAL OSCILLATOR TYPICAL OPERATION* | Class-C {Filtered DC Power Supply) DC Plate Voltage 7000 10,000 volts

  • DC Plate Current

    6 amps

    RF INDUSTRIAL OSCILLATOR TYPICAL OPERATION* | DC Plate Current - - - - 6.0 6.0 amps

  • DC PLATE VOLTAGE

    12000 VOLTS

    MaximumRatings | DC PLATE VOLTAGE - - - 12,000 VOLTS DC Grid Current - - .66 .315 amps

  • DC PLATE CURRENT

    6 AMPS

    MaximumRatings | DC PLATE CURRENT - - - - 6.0 AMPS Peak Positive Grid Voltage - 440 360 volts

  • Driving Power

    660 watts

    MaximumRatings | Driving Power - - - 660 365 watts

  • DC GRID VOLTAGE

    1000 VOLTS

    MaximumRatings | DC GRID VOLTAGE - - - - —1000 VOLTS

  • Plate Input Power

    42 kW

    MaximumRatings | Plate Input Power - - - - 42 60 kW

  • DC GRID CURRENT

    1 AMP

    MaximumRatings | DC GRID CURRENT - - - 1.0 AMP Plate Dissipation - - - - 12 18 kW

  • PLATE INPUT POWER

    60 KW

    MaximumRatings | PLATE INPUT POWER - - 60 KW Plate QOutput Power - 30 42 kW

  • PLATE DISSIPATION Approximate Load Impedance 600 750 ohms

    600 ohms

    MaximumRatings | PLATE DISSIPATION Approximate Load Impedance 600 750 ohms

  • (NOMINAL)

    30 Kw

    MaximumRatings | (NOMINAL) - - - - - - - 30 Kw *Loaded Conditions

  • 0O00OHS3 is 6.3 volts. Filament voltage, as meas- cally, either base up or down

    0 volts

    | 0O00OHS3 is 6.3 volts. Filament voltage, as meas- cally, either base up or down.

  • provided. Ordinarily it will not be necessary to let water temperature must not exceed 70°C nor

    70 °C

    | provided. Ordinarily it will not be necessary to let water temperature must not exceed 70°C nor

  • operate with more than 0.4 to 0.6 amperes grid should inlet water pressure exceed 60 psi. This

    0.4 amperes

    | operate with more than 0.4 to 0.6 amperes grid should inlet water pressure exceed 60 psi. This

  • current to obtain reasonable efficiency. In in- table is based upon 20°C temperature rise

    20 °C

    | current to obtain reasonable efficiency. In in- table is based upon 20°C temperature rise.

  • tion rating is 500 watts. Plate Water Pressure

    500 watts

    | tion rating is 500 watts. Plate Water Pressure

  • Maximum plate voltage rating of 12,000 volts

    12000 volts

    | Maximum plate voltage rating of 12,000 volts

  • and maximum plate current of 6.0 amperes dc 20 4 3.5

    6 amperes

    | and maximum plate current of 6.0 amperes dc 20 4 3.5

  • watts input rating applies for Class C amplifier 30 6 4.5

    30 watts

    | watts input rating applies for Class C amplifier 30 6 4.5

  • tors should be used. These precautions are es- metal seal temperatures below the 250°C maxi

    250 °C

    | tors should be used. These precautions are es- metal seal temperatures below the 250°C maxi-

  • The 3CW30,000H3 is usable to 140 MHz. At Division of Varian, 301 Industrial Way, San

    3 MHz

    | The 3CW30,000H3 is usable to 140 MHz. At Division of Varian, 301 Industrial Way, San

  • 7000 volts in Class C service. dations

    7000 volts

    | 7000 volts in Class C service. dations.

  • FITIING NUTS. v .50

    50 v

    | FITIING NUTS. v .50

  • [SEENOTE 3 ) {(X)— w | 29° | 3/°

    3 w

    | [SEENOTE 3 ) {(X)— w | 29° | 3/°

  • | N 3 ETHER A TTING N BE

    3 A

    | | N 3 ETHER A TTING N BE

Data set 02

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification factor

    20

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    162 A

Other

  • Maximum plate voltage

    12000 V

  • Maximum plate dissipation

    30000 W

  • Maximum grid dissipation

    500 W

  • Maximum cathode/plate current

    6 A

  • Frequency for maximum ratings

    90 MHz

  • Plate input power maximum

    60000 W

    IndustrialRF

  • Typical plate output power

    42000 W

    ClassC

Capacitance

  • Input/grid-filament capacitance

    48 to 58 pF

  • Output/plate-filament capacitance

    1.2 to 1.5 pF

  • Feedback/grid-plate capacitance

    30 to 38 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

    20

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    162 A

Other

  • Maximum plate voltage

    12000 V

  • Maximum plate dissipation

    30000 W

  • Maximum grid dissipation

    500 W

  • Maximum cathode/plate current

    6 A

  • Frequency for maximum ratings

    90 MHz

  • Plate input power maximum

    60000 W

    IndustrialRF

  • Typical plate output power

    42000 W

    ClassC

Capacitance

  • Input/grid-filament capacitance

    48 to 58 pF

  • Output/plate-filament capacitance

    1.2 to 1.5 pF

  • Feedback/grid-plate capacitance

    30 to 38 pF

Construction

  • Cooling

    Water and forced air

Data set 04

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • DC plate voltage 10,000

    7000 V

    Typical Operation (Filtered DC Power)

  • DC grid voltage -800

    -600 V

    Typical Operation (Filtered DC Power)

  • DC plate current 6.0

    6 A

    Typical Operation (Filtered DC Power)

  • DC grid current* 0.315

    660 mA

    Typical Operation (Filtered DC Power)

  • Peak RF grid voltage* 360

    440 V

    Typical Operation (Filtered DC Power)

  • Driving power 365

    660 W

    Typical Operation (Filtered DC Power)

  • Plate output power 42

    30000 W

    Typical Operation (Filtered DC Power)

  • Plate dissipation 18

    12000 W

    Typical Operation (Filtered DC Power)

  • Load impedance* 750

    600 ohms

    Typical Operation (Filtered DC Power)

  • Current @

    6.3 V

    as an oscillator. A modern mesh filament is used. The improved mesh

  • Amplification factor

    20 V

    as an oscillator. A modern mesh filament is used. The improved mesh

  • Input

    53 pF

    as an oscillator. A modern mesh filament is used. The improved mesh

  • Output

    1.3 pF

    as an oscillator. A modern mesh filament is used. The improved mesh

  • Feedback

    34 pF

    as an oscillator. A modern mesh filament is used. The improved mesh

  • Maximum frequency for full ratings

    90 MHz

    as an oscillator. A modern mesh filament is used. The improved mesh

  • DC plate current

    6 A

    Maximum Ratings Dimensional Data

  • Grid voltage

    -1000 V

    Maximum Ratings Dimensional Data

  • Grid current

    1 A

    Maximum Ratings Dimensional Data

  • Plate dissipation

    30000 W

    Maximum Ratings Dimensional Data

  • Plate input power

    60000 W

    Maximum Ratings Dimensional Data