4CV8000A

Vapor-cooled ceramic-metal radial-beam power tetrode for low-distortion Class-AB1 audio/RF linear service and Class-C RF power amplification.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 9 V / 41.5 A

Description

Ceramic/metal vapor-cooled radial-beam power tetrode for Class-AB1 audio/RF linear service and Class-C RF power-amplifier service, with low intermodulation distortion.

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: 9 V
Nominal heater current: 41.5 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: 5.5
Max plate voltage: 7000 V
Max screen voltage: 1000 V
Max plate dissipation: 8000 W
Max screen dissipation: 175 W
Max grid dissipation: 50 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
9 V
Heater/Filament Current
41.5 A
At 9.0 V nominal
Frequency for Maximum Ratings
150 MHz
Maximum Plate Voltage
7000 V
Highest published applicable absolute maximum
Maximum Screen Voltage
1000 V
Highest published applicable absolute maximum
Maximum Plate Dissipation
8000 W
Maximum Screen Dissipation
175 W
Maximum Grid Dissipation
50 W
Maximum DC Plate Current
2 A
Plate Voltage
6000 V
ClassAB;RFLinearAmplifier
Screen Voltage
850 V
ClassAB;RFLinearAmplifier
Plate Output Power
7250 W
ClassAB;RFLinearAmplifier;HighOperatingPoint

Characteristic

Grid-Screen Amplification Factor
5.5

Capacitance

Input Capacitance
130 pF
GroundedCathode
Output Capacitance
12.5 pF
GroundedCathode
Feedback Capacitance
1 pF
GroundedCathode