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4EH7 Vacuum Tube New and Used

$4.00
4EH7 Vacuum Tube New and Used
4EH7 Vacuum Tube New and Used

Home / Shop

4EH7 Vacuum Tube New and Used

$4.00
Model Number: 4EH7NEW
4EH7 high-transconductance frame-grid pentode vacuum tube for radio and TV IF amplifier stages, featuring a 4.5V 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 4EH7 (EF183 equivalent) is a 9-pin miniature frame-grid pentode engineered for high-gain IF amplifier stages in television receivers and multi-band radio front-ends. Operating on a 4.5V/300mA series heater, its frame-grid construction delivers exceptionally high transconductance and low noise performance. It was widely integrated into late-1950s and 1960s European and American sets from manufacturers like Telefunken, Grundig, Zenith, and RCA. Available in NOS and tested used conditions.

  • Type: High-Transconductance Sharp-Cutoff Pentode (IF Amplifier)

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

  • Heater Voltage: 4.5V

  • Heater Current: 0.3A

  • Max Plate Voltage: 250V

  • Max Screen Grid Voltage: 200V

  • Max Plate Dissipation: 2.5W

  • Transconductance: 12,500 microsiemens (12.5 mA/V)

  • Equivalents: 4EH7, EF183, 6EH7 (6.3V equivalent), 3EH7 (3.15V equivalent)