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Power - Beam (NOT sweep) (over 1000V 100W) ·BeamPower

4CX250R

Ruggedized radial-beam power tetrode designed for RF power applications in equipment exposed to severe shock and vibration.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
9
Nominal heater
6 V / -

Description

Ruggedized 4CX250R/7580W radial-beam power tetrode for shock/vibration environments.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
9
Nominal heater voltage
6 V
Nominal heater current
-
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

Beam Power

X-ray radiationInterelectrode capacitances
Max plate voltage
2000 V
Max screen voltage
500 V
Max plate dissipation
250 W
Max screen dissipation
12 W
Max grid dissipation
2 W

Promoted fields populated from published ratings/characteristics; additional published values retained in TUBE_SECTION_PARAMETER.

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

Beam Power

Characteristic

  • Heater Current

    2.3 A to 2.9 A

  • Heating Time

    30 to 60 s

Other

  • Cathode-Heater Potential Maximum

    4150 V

  • Frequency for Maximum Ratings

    500 MHz

  • Maximum DC Plate Current

    250 mA

  • Typical SSB Peak Envelope Power

    470 W

    ClassAB1;SingleSideband

  • Typical AF Push-Pull Output Power

    595 W

    ClassAB1;PushPull;TwoTubes

Capacitance

  • Input Capacitance

    16 to 18.5 pF

  • Output Capacitance

    4.2 to 5.2 pF

  • Grid-Plate Capacitance Maximum

    0.06 pF