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

7203

Forced-air-cooled ceramic-metal radial-beam tetrode for audio power, linear RF, and Class-C RF amplifier or oscillator service through 500 MHz.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
-
Nominal heater
6 V / 2.6 A

Description

Forced-air-cooled ceramic-metal beam-power tetrode for AF power, linear RF, and Class-C RF amplifier/oscillator service through 500 MHz.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
-
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
5
Max plate voltage
2000 V
Max screen voltage
400 V
Max plate dissipation
250 W
Max screen dissipation
12 W
Max grid dissipation
2 W
Max cathode current
250 mA

Promoted fields populated from published ratings/characteristics; additional published values retained in TUBE_SECTION_PARAMETER.

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

1940 RCA

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Characteristics

  • Heater or filament voltage

    6 V

    Published nominal value

  • Heater or filament current

    2.6 A

    Published nominal/aggregate value

Other

  • Maximum plate dissipation

    250 W

    Published maximum rating

  • Useful RF power output

    250 W

    Class-C service

  • Maximum frequency

    500 MHz

    Published

Data set 02

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Capacitance

  • Input Capacitance

    15.7 pF

  • Output Capacitance

    4.5 pF

  • Grounded Cathode Feedback Capacitance

    0.04 pF

  • Grounded Grid Feedback Capacitance

    0.01 pF

Other

  • Frequency of Maximum Rating CW

    500 MHz

  • Maximum DC Plate Current

    250 mA

  • Typical Linear Plate Voltage

    2000 V

    ClassAB1

  • Typical Linear Plate Output Power

    300 W

    ClassAB1

Data set 03

1971 RCA HB3 Binder 6 of 7

Published operating points and test conditions from this source.

SECTION 1

Beam Power

Other

  • Maximum DC Plate Voltage

    2000 V

    Forced-air-cooled RF service

  • Maximum DC Screen Voltage

    400 V

    Forced-air-cooled RF service

  • Plate Dissipation

    250 W

    Forced-air-cooled RF service

  • Screen Input

    12 W

    Forced-air-cooled RF service

  • Typical DC Plate Voltage

    2000 V

    Forced-air-cooled RF service

  • Typical DC Screen Voltage

    350 V

    Forced-air-cooled RF service

  • Useful Power Output

    225 W

    Forced-air-cooled RF service

Characteristics

  • Mu Factor, Screen to Control Grid

    5

    Forced-air-cooled RF service

  • Grid-No.1 to Plate Capacitance

    0.03 pF

    Forced-air-cooled RF service

  • Grid-No.1 to Cathode/Screen/Heater Capacitance

    16 pF

    Forced-air-cooled RF service

  • Plate to Cathode/Screen/Heater Capacitance

    4.4 pF

    Forced-air-cooled RF service