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8637

Radiation-cooled twin beam tetrode with matched power sections for RF amplification, oscillation, and frequency multiplication in mobile and base-station equipment to approximately 175 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 9
Nominal heater: 13.5 V / 800 mA

Description

The Amperex 8637 is a radiation-cooled beam-power twin tetrode for RF power amplification, oscillation, and frequency multiplication in mobile and base-station equipment up to 175 MHz.

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: 13.5 V
Nominal heater current: 800 mA
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: 7
Max plate voltage: 600 V
Max screen voltage: 300 V
Max plate dissipation: 25 W
Max screen dissipation: 8 W

Radiation-cooled beam-power twin tetrode; identical sections compressed.

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

1953 Amperex

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

Heater/Filament Voltage
13.5 V
Published datasheet value
Heater/Filament Current
800 mA
Published datasheet value
Maximum Plate/Anode Voltage
600 V
Published datasheet value
Maximum Plate/Anode Dissipation
25 W
Published datasheet value

Characteristic

Amplification Factor
7
Published datasheet value