290

EIMAC ceramic-metal forced-air-cooled radial-beam pentode rated for 5000 watts plate dissipation, intended for broad-band linear and other high-performance Class-AB amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 7
Nominal heater: 6 V / 17 A

Description

The EIMAC 290 is a ceramic/metal forced-air-cooled radial-beam pentode with 5000 W maximum plate dissipation, intended for broad-band linear and other high-performance Class-AB amplifier applications.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 7
Nominal heater voltage: 6 V
Nominal heater current: 17 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

Beam Power

X-ray radiationInterelectrode capacitances

Transconductance: 0.037 S
Max plate voltage: 6000 V
Max screen voltage: 1000 V
Max plate dissipation: 5000 W
Max screen dissipation: 50 W
Max grid dissipation: 2 W

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

Other

Maximum DC Suppressor Voltage
100 V
Maximum DC Grid Voltage
-250 V
Maximum DC Plate Current
2 A
Useful Output Power
6275 W
ClassAB1; GridDriven; 6000V Plate

Characteristic

Frequency for Maximum Ratings
30 MHz