Alternatives & variations Download PDF datasheet

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

3CX10000A1

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 / 104 A

Description

The EIMAC 3CX10000A1 is a air-cooled low-mu power triode for audio/modulator and voltage-regulator applications.

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: 104 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: 6.25
Max plate voltage: 10000 V
Max plate dissipation: 12000 W
Max grid dissipation: 100 W
Max cathode current: 5 A

Promoted maximum ratings/characteristics populated from published headings; service-specific values retained in parameters.

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

Other

The Eimac [1]
8158
The Eimac 8158/3CX10,000A1 is a ceramic and metal power triode
The Eimac [2]
3
The Eimac 8158/3CX10,000A1 is a ceramic and metal power triode
The Eimac [3]
0
The Eimac 8158/3CX10,000A1 is a ceramic and metal power triode
the [1]
3 kW
the 3CW20,000A1, is available with a 20 kw dissipation rating.
the [2]
0 kW
the 3CW20,000A1, is available with a 20 kw dissipation rating.
the [3]
20 kW
the 3CW20,000A1, is available with a 20 kw dissipation rating.
Voltage . . . . . . . . ¢« v v
7.5
Voltage . . . . . . . . ¢« v v .. 7.5 A
Current . v ol v e e e e e [1]
94
Current . v ol v e e e e e 94 104 A
Current . v ol v e e e e e [2]
104
Current . v ol v e e e e e 94 104 A
Amplification Factor [1]
5.5
Amplification Factor . . . . . . . . . . 5.5 7.0
Amplification Factor [2]
7
Amplification Factor . . . . . . . . . . 5.5 7.0
Output . . . . . . « « v v v o o [1]
3.4 pF
Output . . . . . . « « v v v o o 3.4 4.2 pF
Output . . . . . . « « v v v o o [2]
4.2 pF
Output . . . . . . « « v v v o o 3.4 4.2 pF
Transconductance (Ib=
2 A
Transconductance (Ib= 2.0 amps, Eb
DC Plate Voltage [1]
7000 V
DC Plate Voltage . . . . . 7000 7000 volts
DC Plate Voltage [2]
7000 V
DC Plate Voltage . . . . . 7000 7000 volts
DC Grid Voltage” [1]
-1300 V
DC Grid Voltage” . . . . . —1300 -—1300 volts
DC Grid Voltage” [2]
-1300 V
DC Grid Voltage” . . . . . —1300 -—1300 volts
MAXIMUM RATINGS (Per Tube) Zero-Sig DC Plate Current [1]
1.5 A
MAXIMUM RATINGS (Per Tube) Zero-Sig DC Plate Current. . 1.5 1.5 amps
MAXIMUM RATINGS (Per Tube) Zero-Sig DC Plate Current [2]
1.5 A
MAXIMUM RATINGS (Per Tube) Zero-Sig DC Plate Current. . 1.5 1.5 amps
DC Plate Voltage [1]
7000 V
DC Plate Voltage . . . . . . .. 7000 volts Max-Sig DC Plate Current-. . 5.8 7.0 amps
DC Plate Voltage [2]
5.8 V
DC Plate Voltage . . . . . . .. 7000 volts Max-Sig DC Plate Current-. . 5.8 7.0 amps
DC Plate Voltage [3]
7 V
DC Plate Voltage . . . . . . .. 7000 volts Max-Sig DC Plate Current-. . 5.8 7.0 amps
DC Plate Current
5 A
DC Plate Current . . . . . . . . 5.0 amps Load Resistance,
*Adjust for zero-signal plate current (Per Tube) [1]
1300 V
*Adjust for zero-signal plate current (Per Tube) . ....... 1300 1300 volts
*Adjust for zero-signal plate current (Per Tube) [2]
1300 V
*Adjust for zero-signal plate current (Per Tube) . ....... 1300 1300 volts
** At max-signal without negative feedback Max [1]
8 W
** At max-signal without negative feedback Max-8ig Driving Power . . . 0 0 watts
** At max-signal without negative feedback Max [2]
0 W
** At max-signal without negative feedback Max-8ig Driving Power . . . 0 0 watts
** At max-signal without negative feedback Max [3]
0 W
** At max-signal without negative feedback Max-8ig Driving Power . . . 0 0 watts
Effective grid circuit resistance must not exceed Output Power [1]
24400 W
Effective grid circuit resistance must not exceed Output Power . . . . . 24,400 29,100 watts
Effective grid circuit resistance must not exceed Output Power [2]
29100 W
Effective grid circuit resistance must not exceed Output Power . . . . . 24,400 29,100 watts
DC Plate Voltage [1]
7000 V
DC Plate Voltage . . . . . . . . 7000 wvoits DC Plate Voltage . . . . . . . . 2500 volts
DC Plate Voltage [2]
2500 V
DC Plate Voltage . . . . . . . . 7000 wvoits DC Plate Voltage . . . . . . . . 2500 volts
DC Plate Current . . . . . . See Class-A derating DC Grid Voitage* . . . . . . . . ~
290 V
DC Plate Current . . . . . . See Class-A derating DC Grid Voitage* . . . . . . . . ~290 volts
table on Page [1]
3 A
table on Page 3 DC Plate Current . . . . . . . . 4.0 amps
table on Page [2]
4 A
table on Page 3 DC Plate Current . . . . . . . . 4.0 amps
Plate Dissipation [1]
12000 V
Plate Dissipation . . . . . . . . 12,000 watts Peak AF Grid Driving Voltage 290 volts
Plate Dissipation [2]
290 V
Plate Dissipation . . . . . . . . 12,000 watts Peak AF Grid Driving Voltage 290 volts
Load Resistance
2120 ohm
Load Resistance . . . . . . . . 2120 ohms
*Adjust to give listed zero-signal DC plate current Plate Output Power
1800 W
*Adjust to give listed zero-signal DC plate current Plate Output Power . . . . . . . 1800 watts
MAXIMUM RATINGS DC Plate Voltage (tube drop) [1]
0 V
MAXIMUM RATINGS DC Plate Voltage (tube drop) 0-5000 volts
MAXIMUM RATINGS DC Plate Voltage (tube drop) [2]
-5000 V
MAXIMUM RATINGS DC Plate Voltage (tube drop) 0-5000 volts
DC Plate Voitage [1]
10000 V
DC Plate Voitage . . . . . . . . 10,000 volts DC Plate Current . . . . . . . . 0-5 amps
DC Plate Voitage [2]
0 V
DC Plate Voitage . . . . . . . . 10,000 volts DC Plate Current . . . . . . . . 0-5 amps
DC Plate Voitage [3]
-5 V
DC Plate Voitage . . . . . . . . 10,000 volts DC Plate Current . . . . . . . . 0-5 amps
Plate Dissipation
12000 W
Plate Dissipation . . . . . . . . 12,000 watts (These values are chosen according to
Grid Dissipation [1]
100 W
Grid Dissipation . . . . . . . . 100 watts Class-A derating tabie on Page 3)
Grid Dissipation [2]
3 W
Grid Dissipation . . . . . . . . 100 watts Class-A derating tabie on Page 3)
**Since the power dissipated by the filament is about
750 W
**Since the power dissipated by the filament is about 750 watts and since grid dissipation can, under
tion for an additional
850 W
tion for an additional 850 watts dissipation.
current and voltage are restricted according to the external surfaces of the [1]
3
current and voltage are restricted according to the external surfaces of the 3CX10,000A1 is 250°C, Suf-
current and voltage are restricted according to the external surfaces of the [2]
0
current and voltage are restricted according to the external surfaces of the 3CX10,000A1 is 250°C, Suf-
current and voltage are restricted according to the external surfaces of the [3]
250
current and voltage are restricted according to the external surfaces of the 3CX10,000A1 is 250°C, Suf-
the [1]
3 V
the 3CX10,000A1 is 7.5 volts. Filoment voltage, as given here, write to Power Grid Tube Marketing,
the [2]
0 V
the 3CX10,000A1 is 7.5 volts. Filoment voltage, as given here, write to Power Grid Tube Marketing,
the [3]
7.5 V
the 3CX10,000A1 is 7.5 volts. Filoment voltage, as given here, write to Power Grid Tube Marketing,

Data set 02

1975 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Amplification factor
7
Transconductance
20000 uS
Heater/filament voltage
7.5 V
Heater/filament current
104 A

Other

Maximum plate voltage
10000 V
Maximum plate dissipation
12000 W
Maximum grid dissipation
100 W
Maximum cathode/plate current
5 A
Frequency for maximum ratings
110 MHz
Audio-service maximum plate voltage
7000 V
Audio
Typical push-pull plate voltage
7000 V
ClassB

Capacitance

Input/grid-filament capacitance
51 to 51 pF
Output/plate-filament capacitance
4.1 to 4.1 pF
Feedback/grid-plate capacitance
28.5 to 28.5 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
7
Transconductance
20000 uS
Heater/filament voltage
7.5 V
Heater/filament current
104 A

Other

Maximum plate voltage
10000 V
Maximum plate dissipation
12000 W
Maximum grid dissipation
100 W
Maximum cathode/plate current
5 A
Frequency for maximum ratings
110 MHz
Audio-service maximum plate voltage
7000 V
Audio
Typical push-pull plate voltage
7000 V
ClassB

Capacitance

Input/grid-filament capacitance
51 to 51 pF
Output/plate-filament capacitance
4.1 to 4.1 pF
Feedback/grid-plate capacitance
28.5 to 28.5 pF

Construction

Cooling
Forced air