4CW10000A

Water-cooled ceramic-metal radial-beam power tetrode for oscillator, RF amplifier, modulator, and Class-AB audio or RF linear-amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 7.5 V / 75 A

Description

Water-cooled ceramic-metal radial-beam power tetrode for oscillator, RF amplifier, modulator, and Class-AB audio/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: 75 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: 1500 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
Frequency for Maximum Ratings
30 MHz
Maximum Plate Voltage
7500 V
Highest published applicable absolute maximum
Maximum Screen Voltage
1500 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
Filament Current
73 A to 78 A
At 7.5 V
Plate Voltage
7500 V
ClassC;RFPowerAmplifierOrOscillator
Screen Voltage
500 V
ClassC;RFPowerAmplifierOrOscillator
Plate Output Power
16000 W
ClassC;RFPowerAmplifierOrOscillator

Characteristic

Grid-Screen Amplification Factor
4.5

Capacitance

Input Capacitance
108 to 122 pF
GroundedCathode
Output Capacitance
18 to 23 pF
GroundedCathode
Feedback Capacitance
- to 1 pF
GroundedCathode
Input Capacitance
48 to 58 pF
GroundedGridAndScreen
Output Capacitance
18 to 23 pF
GroundedGridAndScreen
Feedback Capacitance
- to 0.16 pF
GroundedGridAndScreen

Data set 02

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

HeaterVoltageNominal
7.5 V
Nominal
HeaterCurrentNominal
75 A
Nominal
Maximum Plate Voltage
7500 V
Maximum Screen Voltage
1500 V
Maximum Plate Dissipation
10000 W
Maximum Screen Dissipation
250 W