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

5CX3000A

Power pentode designed for radio-frequency transmitting, Class-C power amplification, oscillation, or frequency-multiplier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
5 V / 61.5 A

Description

The EIMAC 5CX3000A is a ceramic/metal high-power pentode.

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
5 V
Nominal heater current
61.5 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

Pentode

X-ray radiationInterelectrode capacitances
Max plate voltage
7000 V
Max screen voltage
1000 V
Max plate dissipation
4000 W
Max screen dissipation
175 W
Max grid dissipation
50 W

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

Pentode

Capacitance

  • Input - - = - - - - - 125 145 pF

    145 pF

  • Output - - - - - - - - 18 24 pF

    24 pF

  • Feedback - - - - - - - .60 pF

    60 pF

  • Input R 55 67 pF

    67 pF

  • Output - - - - - - - - 18 24 pF

    24 pF

Other

  • Maximum plate voltage

    7000 V

  • Maximum screen voltage

    1000 V

  • Maximum plate dissipation

    4000 W

  • Maximum screen dissipation

    175 W

  • Maximum grid dissipation

    50 W