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4JD6 Vacuum Tube New and Used

$5.00
4JD6 Vacuum Tube New and Used
4JD6 Vacuum Tube New and Used

Home / Shop

4JD6 Vacuum Tube New and Used

$5.00
Model Number: 4JD6NEW
4JD6 high-transconductance frame-grid sharp-cutoff pentode vacuum tube for radio and TV IF amplifier stages, featuring a 4.2V 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 4JD6 is a 9-pin miniature frame-grid sharp-cutoff pentode engineered for high-gain IF amplifier service in television receivers and radio front-ends. Operating on a 4.2V/450mA series heater, its frame-grid construction delivers exceptionally high transconductance for stable signal processing in wideband circuits. It was frequently specified in 1960s chassis designs by RCA Victor, Zenith, and Admiral. Available in NOS and tested used conditions.

  • Type: High-Transconductance Frame-Grid Sharp-Cutoff Pentode (IF / RF Amplifier)

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

  • Heater Voltage: 4.2V

  • Heater Current: 0.45A

  • Max Plate Voltage: 250V

  • Max Screen Grid Voltage: 165V

  • Max Plate Dissipation: 3.1W

  • Transconductance: 16,000 microsiemens (16.0 mA/V)

  • Equivalents: 4JD6, 6JD6 (6.3V equivalent), 3JD6 (3.15V equivalent), 12JD6 (12.6V equivalent)