8954

Bare-anode oxide-cathode power tetrode designed for switch/modulator and voltage-regulator service, combining substantial power handling with controlled switching and regulation functions.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6 V / 2.6 A

Description

The EIMAC 8954 is a bare-anode oxide-cathode power tetrode for switch/modulator and voltage-regulator 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: 2.6 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: 800 V
Max plate dissipation: 600 W
Max screen dissipation: 15 W
Max grid dissipation: 4 W
Max cathode current: 8 A

Promoted from printed general-characteristics and absolute-maximum-ratings blocks.

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

Characteristic

Amplification factor
5

Other

Maximum DC plate voltage
7500 V
Maximum DC screen voltage
800 V
Maximum plate dissipation
600 W
Maximum screen dissipation
15 W
Maximum grid dissipation
4 W
Maximum cathode/plate current
8 A