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Power - Beam (NOT sweep) (over 1000V 100W) ·BeamPower

4CX5000A8170

Svetlana 4CX5000A/8170 transmitting tetrode designed for audio and RF applications, particularly VHF FM broadcast transmitters in the 88–108 MHz band.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
7.5 V / 75 A

Description

The Svetlana™ 4CX5000A/8170 is designed for audio and radio frequency applications. It is particularly well-suited for use in VHF FM broadcast transmitters in the Band II 88-108 MHz frequency range. The Svetlana 4CX5000A/ 8170 has a directly-heated thoriated tungsten mesh filament for mechanical ruggedness and good VHF electrical performance. This modern mesh filament design is superior to the old hairpin design of the 1950's. In some VHF applications, the input circuit may need minor tuning to use the Svetlana 4CX5000A/8170 as a replacement because of the low inductance of the Svetlana mesh filament. No adjustments are required in Audio, MF or HF equipment. The Svetlana 4CX5000A/8170 is manufactured in the Svetlana factory in St. Petersburg, Russia, and is

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
7.5 V
Nominal heater current
75 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
Max plate voltage
7500 V
Max screen voltage
1500 V
Max plate dissipation
5000 W
Max screen dissipation
250 W
Max grid dissipation
75 W

Maximum ratings promoted from 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

199X Svetlana

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • HeaterVoltageNominal

    7.5 V

    Nominal

  • HeaterCurrentNominal

    75 A

    Nominal

  • Maximum Plate Voltage

    7500 V

  • Maximum Screen Voltage

    1500 V

  • Maximum Plate Dissipation

    5000 W

  • Maximum Screen Dissipation

    250 W