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

3CW30000H7

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 / 160 A

Description

The EIMAC 3CW30000H7 is a water-cooled high-mu power triode for rf, zero-bias linear, regulator, switch, and pulsed service.

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
160 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
200
Max plate voltage
28000 V
Max plate dissipation
30000 W
Max grid dissipation
500 W
Max cathode current
40 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 3CW30,000H7 is a ceramic/metal water-cooled high-mu power

    3 a

    | The EIMAC 3CW30,000H7 is a ceramic/metal water-cooled high-mu power

  • The anode power dissipation rating is 30,000 watts with water cooling

    30000 watts

    | The anode power dissipation rating is 30,000 watts with water cooling.

  • Voltage « oo v v vii it ittt it it i i et 6.3:03 V

    6.3 v

    GeneralCharacteristics | Voltage « oo v v vii it ittt it it i i et 6.3:03 V

  • Current, at 6.3 volts

    6.3 volts

    GeneralCharacteristics | Current, at 6.3 volts . .. .. ... i v i eenans 160 A

  • Amplification Factor (Average)

    200 v

    GeneralCharacteristics | Amplification Factor (Average):. . ... ..o v v 200

  • 3 61 pF

    3 pF

    GeneralCharacteristics | 3 61 pF

  • CoUt & v ittt i it it it i i e e 0.2 pF

    0.2 v

    GeneralCharacteristics | CoUt & v ittt i it it it i i e e 0.2 pF

  • CEP v ittt ittt i i i it i e e e 36 pF

    36 v

    GeneralCharacteristics | CEP v ittt ittt i i i it i e e e 36 pF

  • 5 61 pF

    5 pF

    GeneralCharacteristics | 5 61 pF

  • 0 36 pF

    0 pF

    GeneralCharacteristics | 0 36 pF

  • L 0.2 pF

    0.2 pF

    GeneralCharacteristics | L 0.2 pF

  • W it ittt st e sttt astanastasnaasoansannns 110 MHz

    110 W

    GeneralCharacteristics | W it ittt st e sttt astanastasnaasoansannns 110 MHz

  • 2. Capacitance values are for a cold tube as measured in a special shielded fixture in accordance with Electronic In

    2 a

    GeneralCharacteristics | 2. Capacitance values are for a cold tube as measured in a special shielded fixture in accordance with Electronic In-

  • (Effective 2-1-75) © by Varian Printed In U.S.A

    2 A

    GeneralCharacteristics | (Effective 2-1-75) © by Varian Printed In U.S.A.

Other

  • Envelope & Ceramic/Metal Seals

    250 v

    | Envelope & Ceramic/Metal Seals . ... v v v v vvvvr et vnerenneseneenssa. 250°C

  • DC PLATE VOLTAGE

    8000 VOLTS

    MaximumRatings | DC PLATE VOLTAGE .......... 8000 VOLTS Single-Tone Plate Current? , . .., 5.92 6.0 Adc

  • DCPLATECURRENT

    6 AMPERES

    MaximumRatings | DCPLATECURRENT .......... 6.0 AMPERES Single-Tone Grid Current LI 1.22 *1.0 Adc

  • PLATE DISSIPATION

    30000 WATTS

    MaximumRatings | PLATE DISSIPATION .......... 30,000 WATTS Driving Power1, . . . ... ...... 1750 1540 W

  • GRID DISSIPATION

    500 WATTS

    MaximumRatings | GRID DISSIPATION . ......... 500 WATTS Plate Dissipation . .......... 13.4 10.8 kW

  • Single-Tone Plate Output Power

    29.6 kW

    MaximumRatings | Single-Tone Plate Output Power .. 29.6 24.2 kW

  • DC PLATE VOLTAGE

    8000 VOLTS

    MaximumRatings | DC PLATE VOLTAGE . ......... 8000 VOLTS Peak rf Grid Voltage1 ............ 555 v

  • DC GRID VOLTAGE

    -500 VOLTS

    MaximumRatings | DC GRID VOLTAGE . ......... -500 VOLTS Calculated Driving Power 1. .. . ... . 430 W

  • DC PLATE CURRENT

    5 AMPERES

    MaximumRatings | DC PLATE CURRENT .......... 5.0 AMPERES Plate Input Power . .. ........... 28 kW

  • PLATE DISSIPATION

    30000 WATTS

    MaximumRatings | PLATE DISSIPATION .. ........ 30,000 WATTS Plate Dissipation . ............. 6.7 kW

  • GRID DISSIPATION

    500 WATTS

    MaximumRatings | GRID DISSIPATION .......... 500 WATTS Plate Qutput Power . ... ......... 21.3 kW

  • GRID DISSIPATIONZ

    500 WATTS

    MaximumRatings | GRID DISSIPATIONZ. . ... ...... 500 WATTS

  • DC GRID VOLTAGE

    -500 VOLTS

    MaximumRatings | DC GRID VOLTAGE ......... -500 VOLTS 2. With duty in excess of approximately 0.1 excessive

  • .. 6 AMPERES element heating may occur during the pulse .and

    6 AMPERES

    MaximumRatings | .. 6 AMPERES element heating may occur during the pulse .and

  • PULSE PLATE CURRENT

    40 AMPERES

    MaximumRatings | PULSE PLATE CURRENT ... .... 40 AMPERES consequent element dissipation derating may be re-

  • Heater: Current at 6.3 volts

    6.3 volts

    NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | Heater: Current at 6.3 volts .. ......... 152 168 A

  • 1. Capacitances values are for a cold tube as measured in a shielded fixture in accordance with Electronic indus

    1 a

    NOTE: TYPICAL OPERATION data are obtained by measurement or calculation from published characteristic curves. | 1. Capacitances values are for a cold tube as measured in a shielded fixture in accordance with Electronic indus-

  • MOUNTING

    3 a

    | MOUNTING - The 3CW30,000H7 must be opera- Where a liquid coolant other than water is

  • means, and the grid is also provided with a flange 50 psi

    50 a

    | means, and the grid is also provided with a flange 50 psi.

  • ture of 50°C with the anode mounted either up or

    50 °C

    | ture of 50°C with the anode mounted either up or

  • known volume. The resistance of the water should 3CW30,000H7 may be operated as a Class-C amp

    3 a

    | known volume. The resistance of the water should 3CW30,000H7 may be operated as a Class-C amp-

  • be maintained above 50 KQ/cm , and preferably lifier or oscillator or as a plate-modulated radio

    50 a

    | be maintained above 50 KQ/cm , and preferably lifier or oscillator or as a plate-modulated radio-

  • above 250 KQ/cm . A relative water resistance frequency amplifier. The zero-bias characteristic

    250 A

    | above 250 KQ/cm . A relative water resistance frequency amplifier. The zero-bias characteristic

  • with a minimum of 50 cfm of air at 50°C maximum

    50 a

    | with a minimum of 50 cfm of air at 50°C maximum

  • should be measured at the terminals with a 1 per- used with this tube are deadly, and the equip

    1 a

    | should be measured at the terminals with a 1 per- used with this tube are deadly, and the equip-

  • 3CW30,000H7 by a substantial percentage. It is mary circuits of the power supply and to dis

    3 a

    | 3CW30,000H7 by a substantial percentage. It is mary circuits of the power supply and to dis-

  • tank circuit operate at a ‘‘Q’’ of 5 or more. provided on all sides of tubes operating at these

    5 a

    | tank circuit operate at a ‘‘Q’’ of 5 or more. provided on all sides of tubes operating at these

  • be operated without adequate shielding in place sue is dependent on frequency. Under 30 MHz,

    30 MHz

    | be operated without adequate shielding in place sue is dependent on frequency. Under 30 MHz,

  • Operation of high-voltage equipment with quencies as low as the 13 and 27 MHz bands

    13 MHz

    | Operation of high-voltage equipment with quencies as low as the 13 and 27 MHz bands.

  • all external tube leads from each other and elim- ohms to 25 ohms, should be used in series with

    25 ohms

    | all external tube leads from each other and elim- ohms to 25 ohms, should be used in series with

  • being equal, controlling internal tube capacitance supply stored energy exceeds 750 watt seconds,

    750 watt

    | being equal, controlling internal tube capacitance supply stored energy exceeds 750 watt seconds,

  • (A) 39VLI0A QIHO

    39 A

    | (A) 39VLI0A QIHO

  • (v) LN3uHNI 31vd

    31 v

    | (v) LN3uHNI 31vd

  • PLATE VOLTAGE (kV) CURVE #4461

    4461 kV

    | PLATE VOLTAGE (kV) CURVE #4461

  • (v) LN34H¥NI QI¥9

    4 v

    | (v) LN34H¥NI QI¥9

  • A (40944156 |

    40944156 A

    | A (40944156 | - - | [10399]10556] - -

  • I2_NCH SHORT FLARED TURE OOUPLING 1T v

    1 v

    | I2_NCH SHORT FLARED TURE OOUPLING 1T v - - - - 10250 - - - - 1635

  • JSNF- W] 29° | 31° |

    29 W

    | JSNF- W] 29° | 31° | - - 29° [ 31° |- -

Data set 02

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Amplification factor

    200

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    160 A

Other

  • Maximum plate voltage

    28000 V

  • Maximum plate dissipation

    30000 W

  • Maximum grid dissipation

    500 W

  • Maximum cathode/plate current

    40 A

  • Frequency for maximum ratings

    110 MHz

  • Pulse-service plate voltage

    28000 V

    Pulse

  • Pulse plate current

    40 A

    Pulse

  • Typical linear output power

    24200 W

    ClassAB

Capacitance

  • Input/grid-filament capacitance

    61 to 61 pF

  • Output/plate-filament capacitance

    0.2 to 0.2 pF

  • Feedback/grid-plate capacitance

    36 to 36 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

    200

  • Heater/filament voltage

    6.3 V

  • Heater/filament current

    160 A

Other

  • Maximum plate voltage

    28000 V

  • Maximum plate dissipation

    30000 W

  • Maximum grid dissipation

    500 W

  • Maximum cathode/plate current

    40 A

  • Frequency for maximum ratings

    110 MHz

  • Pulse-service plate voltage

    28000 V

    Pulse

  • Pulse plate current

    40 A

    Pulse

  • Typical linear output power

    24200 W

    ClassAB

Capacitance

  • Input/grid-filament capacitance

    61 to 61 pF

  • Output/plate-filament capacitance

    0.2 to 0.2 pF

  • Feedback/grid-plate capacitance

    36 to 36 pF

Construction

  • Cooling

    Water and forced air