8590

Forced-air external-anode radial-beam tetrode for wideband grid-pulsed RF amplification and pulse-modulator service, with pulse plate-voltage ratings far above normal continuous operation.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6 V / 2.5 A

Description

The EIMAC 8590/4CPX250K is a compact forced-air-cooled external-anode radial-beam tetrode for wideband grid-pulsed RF amplifier and pulse-modulator service.

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: 6 V
Nominal heater current: 2.5 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
Max plate voltage: 7000 V
Max screen voltage: 1000 V
Max plate dissipation: 250 W
Max screen dissipation: 12 W
Max grid dissipation: 2 W
Max cathode current: 6 A

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

CW Maximum Plate Voltage
2500 V
CW
Pulse RF Maximum Plate Voltage
5500 V
GridPulsed