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5AM8 Vacuum Tube New and Used

$4.00
5AM8 Vacuum Tube New and Used
5AM8 Vacuum Tube New and Used

Home / Shop

5AM8 Vacuum Tube New and Used

$4.00
Model Number: 5AM8NEW
5AM8 triode-pentode vacuum tube for radio and TV VHF oscillator-mixer and video amplifier stages, featuring a 4.7V 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 5AM8 is a 9-pin miniature compound tube containing a medium-mu triode and a sharp-cutoff pentode in a single envelope. Designed for VHF oscillator-mixer, video amplifier, and IF amplifier service in TV receivers and radio front-ends, it operates on a 4.7V/600mA series heater. It was regularly utilized in late-1950s chassis designs by RCA Victor, Zenith, Philco, and Admiral. Available in NOS and tested used conditions.

  • Type: Medium-Mu Triode / Sharp-Cutoff Pentode (VHF Oscillator-Mixer / Video Amplifier)

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

  • Heater Voltage: 4.7V

  • Heater Current: 0.6A

  • Max Plate Voltage (Triode / Pentode): 300V / 300V

  • Max Plate Dissipation (Triode / Pentode): 2.5W / 3.0W

  • Transconductance (Triode): 8,500 microsiemens (8.5 mA/V)

  • Transconductance (Pentode): 6,800 microsiemens (6.8 mA/V)

  • Equivalents: 5AM8, 6AM8 / 6AM8A (6.3V equivalent)