4CW800F

Heater variant of the 4CW800B liquid-cooled radial-beam power tetrode for distributed and VHF/UHF power amplification under severe shock and vibration.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 26.5 V / 1.1 A

Description

Heater variant of the 4CW800B: ceramic/metal liquid-cooled radial-beam power tetrode for distributed and VHF/UHF power amplifiers, ruggedized for severe shock and vibration.

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: 26.5 V
Nominal heater current: 1.1 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

Transconductance: 0.04 S
Max plate voltage: 3000 V
Max screen voltage: 500 V
Max plate dissipation: 800 W
Max screen dissipation: 15 W
Max grid dissipation: 3 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
26.5 V
Heater/Filament Current
1.1 A
At 26.5 V nominal
Frequency for Maximum Ratings
800 MHz
Maximum Plate Voltage
3000 V
Highest published applicable absolute maximum
Maximum Screen Voltage
500 V
Highest published applicable absolute maximum
Maximum Plate Dissipation
800 W
Maximum Screen Dissipation
15 W
Maximum Grid Dissipation
3 W
Maximum DC Plate Current
600 mA
Plate Voltage
2500 V
ClassAB;BroadbandRFLinearAmplifier
Screen Voltage
275 V
ClassAB;BroadbandRFLinearAmplifier
Plate Output Power
1000 W
ClassAB;BroadbandRFLinearAmplifier;HighOperatingPoint

Characteristic

Transconductance
40000 uS
Cathode Warmup Time
180 s
Input Conductance
0.0001 mho
Ib=600 mA; F=30 MHz

Capacitance

Input Capacitance
45 pF
GroundedCathode
Output Capacitance
5.8 pF
GroundedCathode
Feedback Capacitance
0.15 pF
GroundedCathode