4CX10000J

High-power ceramic/metal transmitting tetrode designed for RF power amplification, linear amplification, oscillation, modulation, broadcast, or related high-power service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7.5 V / 103 A

Description

Compact high-power ceramic/metal forced-air-cooled radial-beam tetrode designed for exceptionally low intermodulation distortion in RF linear-amplifier 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: 103 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

Tetrode

X-ray radiationInterelectrode capacitances

Amplification factor: 4.5
Max plate voltage: 7500 V
Max screen voltage: 1600 V
Max plate dissipation: 12000 W
Max screen dissipation: 250 W
Max grid dissipation: 75 W

Published absolute maximum ratings promoted from the applicable service tables; pulse-service maxima are used only where explicitly noted in the tube note.

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

Tetrode

Other

Heater/Filament Voltage
7.5 V
Heater/Filament Current
103 A
At 7.5 V nominal
Frequency for Maximum Ratings
100 MHz
Maximum Plate Voltage
7500 V
Highest published applicable absolute maximum
Maximum Screen Voltage
1600 V
Highest published applicable absolute maximum
Maximum Plate Dissipation
12000 W
Maximum Screen Dissipation
250 W
Maximum Grid Dissipation
75 W
Maximum DC Plate Current
4 A
Plate Voltage
7500 V
ClassAB;RFLinearAmplifier
Screen Voltage
1600 V
ClassAB;RFLinearAmplifier
Plate Output Power
10000 W
ClassAB;RFLinearAmplifier

Characteristic

Grid-Screen Amplification Factor
4.5

Capacitance

Input Capacitance
120 pF
GroundedFilament
Output Capacitance
56 pF
GroundedFilament
Feedback Capacitance
0.7 pF
GroundedFilament
Input Capacitance
113 to 127 pF
GroundedFilament;EquipmentDesignRange
Output Capacitance
18 to 23 pF
GroundedFilament;EquipmentDesignRange
Input Capacitance
51 to 61 pF
GroundedGrid;EquipmentDesignRange
Output Capacitance
19 to 24 pF
GroundedGrid;EquipmentDesignRange
Feedback Capacitance
- to 0.16 pF
GroundedGrid;EquipmentDesignRange