AX4250A5D22

Amperex transmitting power tetrode in the 4-250A/5D22 family, intended for high-power RF amplifier, oscillator, and related transmitting service.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 5 V / 14.5 A

Description

AX4250A5D22 is listed in the supplied Amperex power-tube table as a transmitting power tetrode, with published filament, dissipation, operating, output-power, and frequency data.

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: 5 V
Nominal heater current: 14.5 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: 6
Max plate voltage: 3500 V
Max screen voltage: 600 V
Max plate dissipation: 250 W

Published filament, dissipation, typical plate/grid/screen operation, output power, and maximum-frequency data reviewed.

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

1958 Amperex Industrial

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Characteristic

Filament voltage
5 V
Published transmitting-tube rating
Filament current
14.5 A
Published transmitting-tube rating
Amplification factor
6
Published power-tube table

Other

Maximum plate dissipation
250 W
Published power-tube table
Plate voltage
3500 V
TransmittingService
Plate current
345 mA
TransmittingService
Power output
800 W
TransmittingService
Grid bias
-500 V
TransmittingService
Grid current
20 mA
TransmittingService
Screen voltage
600 V
TransmittingService
Maximum frequency
75 MHz
FullInputWatts