Skip to main content

Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode

4X5000A

Large forced-air-cooled ceramic-metal tetrode for high-power professional RF transmitting service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 75 A

Description

The EIMAC 4X5000A is a forced-air-cooled ceramic/metal high-power tetrode.

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
5
Max plate voltage
7500 V
Max screen voltage
1500 V
Max plate dissipation
6000 W
Max screen dissipation
250 W
Max grid dissipation
75 W
Max cathode current
3 A

Promoted from printed maximum-rating and general-characteristics tables.

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

Capacitance

  • Feedback - - - - - - - - - 0.75 uuf 0.14 uuf

    0.14 pF

  • Input - - - - - - - - - - 106 uuf 47 uuf

    47 pF

  • Output - - - - - - - - - - 18 uuf 18 uuf

    18 pF

Other

  • Maximum plate voltage

    7500 V

  • Maximum plate dissipation

    5000 W

Data set 02

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

  • Heater/Filament Voltage

    7.5 V

  • Heater/Filament Current

    75 A

  • Amplification Factor

    5

Other

  • Maximum DC Plate Voltage

    7500 V

  • Maximum DC Screen Voltage

    1500 V

  • Maximum Plate/Cathode Current

    3 A

  • Maximum Plate Dissipation

    6000 W

  • Maximum Screen Dissipation

    250 W

  • Maximum Grid Dissipation

    75 W

  • Frequency for Maximum Ratings

    30 MHz

  • Typical Plate Output Power

    16000 W

Construction

  • Cooling

    Forced air