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

3CX10000H3

Ceramic-metal industrial power triode designed for high-power RF amplifier, oscillator, or modulator service. Manufacturer data emphasize transmitting duty, substantial plate dissipation, and the cooling provisions required for continuous professional operation.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 99 A

Description

The EIMAC 3CX10000H3 is a air-cooled ceramic/metal industrial medium-mu power triode for rf heating 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
7.5 V
Nominal heater current
99 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
10000 V
Max plate dissipation
10000 W
Max grid dissipation
250 W
Max cathode current
4 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

  • reserve emission is available from its 750 watt filament. The grid structure

    750 watt

    | reserve emission is available from its 750 watt filament. The grid structure

  • is rated at 250 watts, making this tube an excellent choice for severe appli

    250 watts

    | is rated at 250 watts, making this tube an excellent choice for severe appli-

  • Voltage S 7.5 Volts

    7.5 Volts

    GeneralCharacteristics | Voltage S 7.5 Volts

  • Current

    94 Amps

    GeneralCharacteristics | Current - - - - - - 94 104 Amps

  • Amplification Factor

    20

    GeneralCharacteristics | Amplification Factor - - - - - - 20

  • Grid-Plate

    30 uuf

    GeneralCharacteristics | Grid-Plate - - - - - - 30 38 uuf (

Other

  • Maximum Operating Temperature

    250 °C

    | Maximum Operating Temperature - - - - . - - - - - - - - 250°C

  • Net Weight

    12 Pounds

    | Net Weight - - - - - - - - - <« - - . - - - - 12 Pounds

  • Class-C (Filtered DC Power Supply) DC Plate Voltage 7000 9000 Volts

    7000 Volts

    RF INDUSTRIAL OSCILLATOR TYPICAL OPERATION* | Class-C (Filtered DC Power Supply) DC Plate Voltage 7000 9000 Volts

  • DC Plate Current

    4 Amps

    RF INDUSTRIAL OSCILLATOR TYPICAL OPERATION* | DC Plate Current - - 4.0 4.0 Amps

  • CURRENT

    10000 VOLTS

    MaximumRatings | CURRENT -- 10,000 VOLTS : Current

  • 4.0 AMPS Peak Positive Grid Voltage

    4 AMPS

    MaximumRatings | 4.0 AMPS Peak Positive Grid Voltage

  • DC GRID VOLTAGE

    1000 VOLTS

    MaximumRatings | DC GRID VOLTAGE - —1000 VOLTS 260 570 Watts

  • DC GRID CURRENT

    0.6 AMP

    MaximumRatings | DC GRID CURRENT - 0.6 AMP Plate Input Power - - 28 36 kW

  • PLATE INPUT POWER 40 KW

    40 KW

    MaximumRatings | PLATE INPUT POWER 40 KW

  • - - 9 7 kW

    9 kW

    MaximumRatings | - - 9 7 kW

  • 0 Kw Plate Output Power

    0 Kw

    MaximumRatings | 0 Kw Plate Output Power - - 19 29 kw

  • *Loaded Conditions Approximate Load Impedance

    720 Ohms

    MaximumRatings | *Loaded Conditions Approximate Load Impedance - 720 1100 Ohms

  • 3CX10,000H3 is 7.5 volts. Filament voltage, as ed vertically, either base up or down. A grid

    3 volts

    | 3CX10,000H3 is 7.5 volts. Filament voltage, as ed vertically, either base up or down. A grid

  • vary from 7.5 volts by more than plus or minus Cooling

    7.5 volts

    | vary from 7.5 volts by more than plus or minus Cooling — The maximum temperature rating

  • is 250°C. Sufficient forced-air cocling must be

    250 °C

    | is 250°C. Sufficient forced-air cocling must be

  • ing is 0.6 ampere dc. This value should not be

    0.6 ampere

    | ing is 0.6 ampere dc. This value should not be

  • seals below 250°C. Tube life is usually pro

    250 °C

    | seals below 250°C. Tube life is usually pro-

  • will not be necessary to operate with more than and seal temperatures below 225°C with an

    225 °C

    | will not be necessary to operate with more than and seal temperatures below 225°C with an

  • inlet-air temperature of 50°C are tabulated

    50 °C

    | inlet-air temperature of 50°C are tabulated.

  • 0.2 to 0.4 amp grid current to obtain reasonable

    0.2 amp

    | 0.2 to 0.4 amp grid current to obtain reasonable

  • efficiency. In industrial heating service with Sea Level 5000 Feet

    5000

    | efficiency. In industrial heating service with Sea Level 5000 Feet

  • imum grid dissipation rating is 250 watts. 4000 85 0.18 105 0.21

    250 watts

    | imum grid dissipation rating is 250 watts. 4000 85 0.18 105 0.21

  • over at the load. In addition current limiting **Since the power dissipated by the filament is about 750 watts and since grid

    750 watts

    | over at the load. In addition current limiting **Since the power dissipated by the filament is about 750 watts and since grid

  • dissipation can, under some circumstances, represent another 25 watts, allow

    25 watts

    | dissipation can, under some circumstances, represent another 25 watts, allow-

  • power supply resistors should be used. These ance has been made in preparing this tabulation for an additional 1000 watts

    1000 watts

    | power supply resistors should be used. These ance has been made in preparing this tabulation for an additional 1000 watts

  • Spark gaps from plate to ground should be tact ring by a 1%’ 1.D. air duct arranged at a

    1 a

    | Spark gaps from plate to ground should be tact ring by a 1%’ 1.D. air duct arranged at a

  • is usable to 140 Mc. At this frequency, plate volt- Eimac, A Division of Varian Associates Inc., 301

    140 Mc

    | is usable to 140 Mc. At this frequency, plate volt- Eimac, A Division of Varian Associates Inc., 301

  • age must be reduced to 7000 volts in Class C Industrial Way, San Carlos, Calif. for informa

    7000 volts

    | age must be reduced to 7000 volts in Class C Industrial Way, San Carlos, Calif. for informa-

  • A 6.928 7.050

    6.928 A

    | A 6.928 7.050

  • V| .2s0

    2 V

    | V| .2s0

  • V) /2 HILES

    2 V

    | V) /2 HILES

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

    7.5 V

  • Heater/filament current

    99 A

Other

  • Maximum plate voltage

    10000 V

  • Maximum plate dissipation

    10000 W

  • Maximum grid dissipation

    250 W

  • Maximum cathode/plate current

    4 A

  • Frequency for maximum ratings

    140 MHz

  • Plate input power maximum

    40000 W

    IndustrialRF

  • Typical plate voltage

    9000 V

    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

    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

    7.5 V

  • Heater/filament current

    99 A

Other

  • Maximum plate voltage

    10000 V

  • Maximum plate dissipation

    10000 W

  • Maximum grid dissipation

    250 W

  • Maximum cathode/plate current

    4 A

  • Frequency for maximum ratings

    140 MHz

  • Plate input power maximum

    40000 W

    IndustrialRF

  • Typical plate voltage

    9000 V

    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

    Forced air

Data set 04

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Current @

    7.5 V

    amplifier, oscillator, or modulator service. The

  • Input

    53 pF

    amplifier, oscillator, or modulator service. The

  • Output

    1.5 pF

    amplifier, oscillator, or modulator service. The

  • Feedback

    34 pF

    amplifier, oscillator, or modulator service. The

  • Maximum frequency for full ratings (CW)

    90 MHz

    amplifier, oscillator, or modulator service. The

Other

  • DC plate voltage

    10000 V

    Maximum Ratings

  • DC plate current

    5 A

    Maximum Ratings

  • Plate dissipation

    10000 W

    Maximum Ratings

  • Grid dissipation

    250 W

    Maximum Ratings

  • DC grid voltage

    -1000 V

    Maximum Ratings

  • DC grid current

    600 mA

    Maximum Ratings

  • Plate input power

    40000 W

    Maximum Ratings

  • (Frequencies to

    30 MHz

    Typical Operation

  • DC plate voltage 7000

    9000 V

    Typical Operation

  • DC plate current 4.0

    4 A

    Typical Operation

  • DC grid voltage* -670

    -930 V

    Typical Operation

  • DC grid current* 275

    430 mA

    Typical Operation

  • Peak RF grid voltage* 340

    390 V

    Typical Operation

  • Driving Power* 260

    570 W

    Typical Operation

  • Plate input power 28,000

    36000 W

    Typical Operation

  • Plate dissipation 9000

    7000 W

    Typical Operation

  • Plate output power 19,000

    29000 W

    Typical Operation

  • Approximate load impedance 720

    1100 Ohms

    Typical Operation

  • DC plate voltage

    7500 V

    Maximum Ratings (per tube)

  • DC plate current

    5 A

    Maximum Ratings (per tube)

  • Plate dissipation

    12000 W

    Maximum Ratings (per tube)

  • Grid dissipation

    250 W

    Maximum Ratings (per tube)

  • obtained to

    140 MHz

    obtained to 140 MHz. Class C service at

  • the ceramic/metal seals below

    250 ˚C

    obtained to 140 MHz. Class C service at

  • temperatures below

    225 ˚C

    obtained to 140 MHz. Class C service at

  • air temperature of

    40 ˚C

    obtained to 140 MHz. Class C service at

  • leads. At frequencies above

    30 MHz

    obtained to 140 MHz. Class C service at