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Power - Tetrode (NOT beam) ·Tetrode

FU25

Power tetrode designed for RF amplification, frequency multiplication, oscillation, and plate modulation. Its versatile transmitting construction supports multiple radio-frequency power functions.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
12.6 V / 450 mA

Description

Power tetrode for RF power amplification, frequency multiplication, oscillation, and plate modulation.

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
12.6 V
Nominal heater current
450 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

Tetrode

X-ray radiationInterelectrode capacitances
Max plate voltage
600 V
Max screen voltage
300 V
Max plate dissipation
25 W
Max screen dissipation
3.5 W

Published limits promoted from translated source.

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

198X Shuguang

Published operating points and test conditions from this source.

SECTION 1

Tetrode

Other

  • HeaterVoltageNominal

    12.6 V

    Nominal

  • HeaterCurrentNominal

    450 mA

    Nominal

  • Maximum Plate Voltage

    600 V

  • Maximum Screen Voltage

    300 V

  • Maximum Plate Dissipation

    25 W

  • Maximum Screen Dissipation

    3.5 W