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12X4 Vacuum Tube New and Used

$5.00
12X4 Vacuum Tube New and Used
12X4 Vacuum Tube New and Used

Home / Shop

12X4 Vacuum Tube New and Used

$5.00
Model Number: 12X4
12X4 miniature 7-pin full-wave rectifier tube for radio and audio power supplies. 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 12X4 is a 7-pin miniature full-wave power rectifier tube designed for low-power high-voltage DC power supply applications in vintage radio receivers, audio amplifiers, and test equipment. It converts alternating current (AC) to direct current (DC) using an indirectly heated cathode operating on a 12.6-volt heater supply. RCA, Sylvania, GE, and Westinghouse produced the 12X4 to standard RETMA specifications with glass T-5 1/2 envelopes and button 7-pin bases.

  • Tube Type: Full-wave rectifier

  • Base: 7-Pin Miniature (E7-1 / B7G)

  • Envelope: Glass (T-5 1/2)

  • Heater Voltage (Vh): 12.6 V

  • Heater Current (Ih): 0.3 A

  • Maximum Peak Inverse Voltage (PIV): 1250 V

  • Maximum Peak Plate Current (Ipm): 210 mA per plate

  • Maximum DC Output Current (Idc): 70 mA

  • Cathode: Indirectly heated