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41ST Vacuum Tube New and Used

$9.00
41ST Vacuum Tube New and Used
41ST Vacuum Tube New and Used

Home / Shop

41ST Vacuum Tube New and Used

$9.00
Model Number: 41STNEW
Pentagrid or pentode power output 41 vintage vacuum tube with a 6.3V heater rating, available in new old stock (NOS) or tested used options for vintage radio repair and audio output circuits.
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Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
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  • Description
  • Specifications

The 41ST is a pentode power output vacuum tube designed for audio frequency power amplification stages in transformer-operated antique radios and vintage public address systems. Featuring a 6.3V filament rating drawing 400mA, it utilizes a 6-pin medium shell base in an ST-12 glass envelope construction. Manufactured by companies such as RCA, Sylvania, Ken-Rad, and Philco, this tube was widely used in mid-century tabletop and console radio chassis—such as various Philco models—to drive dynamic speaker output stages with reliable power handling.

  • Tube Type: Pentode Power Output

  • Base Type: 6-Pin Medium Shell

  • Envelope Style: Glass ST-12

  • Filament Voltage: 6.3 V AC/DC

  • Filament Current: 0.4 A (400 mA)

  • Maximum Plate Voltage: 250 V

  • Maximum Screen Voltage: 250 V

  • Plate Dissipation: 11.0 W

  • Primary Function: Audio frequency power output amplifier stage

  • Condition Options: New Old Stock (NOS) or Tested Used