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5AS8 Vacuum Tube New and Used

$4.00
5AS8 Vacuum Tube New and Used
5AS8 Vacuum Tube New and Used

Home / Shop

5AS8 Vacuum Tube New and Used

$4.00
Model Number: 5AS8NEW
5AS8 triode-sharp cutoff pentode vacuum tube for radio and TV video amplifier and AGC stages, featuring a 4.7V heater and 9-pin miniature base.
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  • Description
  • Specifications

The 5AS8 is a 9-pin miniature compound tube housing a high-mu triode and a sharp-cutoff pentode within a single envelope. Engineered for high-frequency applications, it was designed for video amplifier, sound IF, and automatic gain control (AGC) keyer service in television receivers and radio front-ends. Operating on a 4.7V/600mA series heater, it provided high gain efficiency in series-filament chassis produced by manufacturers like RCA Victor, Zenith, Philco, and Admiral. Available in NOS and tested used conditions.

  • Type: High-Mu Triode / Sharp-Cutoff Pentode (Video Amplifier / AGC / IF)

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

  • Heater Voltage: 4.7V

  • Heater Current: 0.6A

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

  • Max Plate Dissipation (Triode / Pentode): 2.0W / 3.0W

  • Transconductance (Triode): 5,000 microsiemens (5.0 mA/V)

  • Transconductance (Pentode): 6,400 microsiemens (6.4 mA/V)

  • Equivalents: 5AS8, 6AS8 (6.3V equivalent)