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5BQ7A Vacuum Tube New and Used

$4.00
5BQ7A Vacuum Tube New and Used
5BQ7A Vacuum Tube New and Used

Home / Shop

5BQ7A Vacuum Tube New and Used

$4.00
Model Number: 5BQ7ANEW
5BQ7A medium-mu dual triode vacuum tube for radio and TV VHF cascode RF amplifier stages, featuring a 5.6V heater and 9-pin miniature base.
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Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
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  • Description
  • Specifications

The 5BQ7A is a 9-pin miniature medium-mu dual triode designed for low-noise VHF RF cascode amplifier service in television tuners and radio front-ends. Operating on a 5.6V/600mA series heater with controlled warm-up time, its internal shielding between sections enables exceptional high-frequency separation and low noise figures. It was commonly featured in late-1950s chassis designs by manufacturers such as Zenith, RCA Victor, Philco, and Admiral. Available in NOS and tested used conditions.

  • Type: Medium-Mu Dual Triode (VHF RF / Cascode Amplifier)

  • Base: 9-Pin Miniature Noval (EIA 9AJ layout)

  • Heater Voltage: 5.6V

  • Heater Current: 0.6A

  • Max Plate Voltage (Per Unit): 250V

  • Max Plate Dissipation (Per Unit): 2.0W

  • Amplification Factor (Mu, Per Unit): 39

  • Transconductance (Per Unit): 6,100 microsiemens (6.1 mA/V)

  • Equivalents: 5BQ7A, 5BQ7, 6BQ7A (6.3V equivalent), 4BQ7A (4.2V equivalent)