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1B5 Vacuum Tube New and Used

$4.50
1B5 Vacuum Tube New and Used
1B5 Vacuum Tube New and Used

Home / Shop

1B5 Vacuum Tube New and Used

$4.50
Model Number: 1B5NEW
Type 1B5 6-pin duo-diode triode tube with top grid cap for vintage 2-volt battery radio circuits. Available in new and used condition.
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Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
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  • Description
  • Specifications

The 1B5 is a 6-pin duo-diode triode with a top grid cap designed for detector, AVC, and audio amplifier service in vintage battery radios. It operates on a 2.0V direct filament supply and is functionally identical to the 25S tube.

  • Tube Function: Duo-Diode / High-Mu Triode

  • Base Design: 6-Pin Standard with Top Cap (Control Grid)

  • Glass Shape: ST-12

  • Filament Power: 2.0 Volts DC

  • Filament Draw: 0.06 Amps

  • Maximum Plate Voltage: 135 Volts

  • Amplification Factor (Mu): 20

  • Cathode Heating Method: Direct (Filament)