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45 Vacuum Tube New and Used

$60.00
45 Vacuum Tube New and Used
45 Vacuum Tube New and Used

Home / Shop

45 Vacuum Tube New and Used

$60.00
Model Number: 45NEW
Type 45 power output triode vacuum tube for vintage radio receivers and audio amplifiers, featuring a 2.5V filament and 4-pin UX base.
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Categories: Vacuum Tubes and Accessories
Manufacturer: Multiple Manufacturers
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  • Description
  • Specifications

The Type 45 is a classic 4-pin power output triode designed for high-fidelity audio power amplifier stages in console radio receivers and early audio equipment. Featuring a direct-heated filament operating on a 2.5V rating, it is renowned for low distortion, linear operation, and clean tone production in single-ended and push-pull Class A configurations. Available in new old stock (NOS) and tested used conditions.

  • Type: Direct-Heated Power Output Triode

  • Base: 4-Pin UX Bayonet Base (EIA 4A layout)

  • Bulb Style: ST-14 or ST-16 Shouldered Glass

  • Filament Voltage: 2.5V

  • Filament Current: 1.5A

  • Max Plate Voltage: 275V

  • Max Plate Dissipation: 10.0W

  • Power Output: 1.6W (Single-ended Class A) / 3.0W (Push-Pull Class A)

  • Amplification Factor (Mu): 3.5

  • Mutual Conductance: 2,100 microsiemens (2.1 mA/V)

  • Equivalents: Type 45, 45A, CX-345, UX-245, 245