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4PR65A

Radial-beam pulse tetrode for pulse modulator, amplifier, and oscillator service, with approximately 15 kV plate capability and high amplification factor.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 5
Nominal heater: 6 V / 2.6 A

Description

The EIMAC 4PR65A is a radial-beam pulse tetrode for pulse modulator, amplifier and oscillator service.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 5
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

Beam Power

X-ray radiationInterelectrode capacitances

Amplification factor: 60
Max plate voltage: 15000 V
Max screen voltage: 500 V
Max plate dissipation: 65 W
Max screen dissipation: 12 W
Max grid dissipation: 2 W
Max cathode current: 200 mA

Promoted from printed general-characteristics and 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

Beam Power

Characteristic

Amplification factor
60

Other

Maximum DC plate voltage
15000 V
Maximum DC screen voltage
500 V
Maximum plate dissipation
65 W
Maximum screen dissipation
12 W
Maximum grid dissipation
2 W
Maximum cathode/plate current
200 mA