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3A3 Vacuum Tube New and Used

$5.00
3A3 Vacuum Tube New and Used
3A3 Vacuum Tube New and Used

Home / Shop

3A3 Vacuum Tube New and Used

$5.00
Model Number: 3A3NEW
Type 3A3 / 3A3A 8-pin octal high-voltage half-wave rectifier tube with top cap for television flyback power supply 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 3A3 (and its upgraded variant 3A3A) is an 8-pin octal top-cap high-vacuum half-wave rectifier designed for flyback high-voltage power supplies in television receivers. Introduced during the color television expansion era, its 3.15-volt filament is optimized to run directly from a flyback transformer winding, providing high peak inverse voltage ratings and capability to supply anode voltage to cathode-ray tubes.

  • Tube Function: High-Voltage Half-Wave Rectifier

  • Base Design: 8-Pin Octal (1J / K8A) with Top Anode Cap

  • Glass Shape: T-12

  • Filament Voltage: 3.15 Volts AC / DC

  • Filament Current: 0.22 Amps (220 mA)

  • Maximum Peak Inverse Plate Voltage: 30,000 Volts (30 kV)

  • Maximum Peak Plate Current: 80 mA

  • Maximum DC Output Current: 1.5 mA

  • Cathode Heating Method: Direct (Filament)