Home / Shop

43 Vacuum Tube New and Used

$4.50
43 Vacuum Tube New and Used
43 Vacuum Tube New and Used

Home / Shop

43 Vacuum Tube New and Used

$4.50
Model Number: 43-NEW
43 power output pentode tube with 25.0V heater and 6-pin UX base.
Missing Option: Options
Loading Available Options
Maximum quantity exceeded
Minimum purchase amount of 1 is required
Maximum purchase amount of 4 is allowed
Your Price: $4.50
4.500
A one-time price of $4.50 will be added to your order.
5 Left in Stock
Maximum purchase amount of 4 is allowed
Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
Facebook
X
Email
Pinterest
  • Description
  • Specifications

The 43 is a classic 6-pin UX-base power output pentode vacuum tube introduced in the early 1930s. Designed primarily for the audio output stage of line-powered Transformerless (AC/DC) radio receivers, it delivers high power output at relatively low plate voltages. Featuring an ST-14 shoulder glass envelope and an indirectly heated cathode, it operates on a 25.0V heater rating. The 43 is widely found in vintage "midget" and mantle radios of the 1930s and serves as the 6-pin predecessor to later 8-pin octal output pentodes such as the 25A6 and 25L6. Available NOS and tested used.

  • Type: Power Output Pentode (Audio Output Amplifier)

  • Base: 6-Pin UX Base (EIA 6B layout)

  • Heater Voltage: 25.0V

  • Heater Current: 0.3A

  • Max Plate Voltage: 160V

  • Max Screen Grid Voltage (Grid 2): 135V

  • Max Plate Dissipation: 6.0W

  • Max Screen Grid Dissipation: 1.25W

  • Power Output: 2.0W

  • Transconductance: 2400 micromhos (2.4 mA/V)

  • Equivalents & Relatives: 43, 25A6 / 25A6GT (octal equivalent), 25L6 / 25L6GT (higher-efficiency octal relative), 38 (lower-power relative)