The Westinghouse 5Y3GT is a vintage, US-made octal-based, full-wave rectifier vacuum tube commonly used in tweed-era guitar amplifiers and vintage radios, known for providing a warm tone and characteristic "tube sag". It converts AC to DC with a 5V filament, featuring a black plate, straight-walled glass, and a 1400V peak reverse voltage. The 5Y3GT is ideal for smaller, vintage amplifiers, such as the Fender Tweed Champ (5F15 F15F1) and Deluxe (5E35 E35E3).
Westinghouse 5Y3GT Vacuum Tube
Sound
- Known for producing a "soft" or "sag" effect due to voltage drop, which is highly desirable for blues and classic rock, providing a compressed, responsive feel.
Durability
- Westinghouse 5Y3GTs are regarded as high-quality, long-lasting, reliable, and high-quality NOS (New Old Stock) components.
Type
- Full-wave rectifier
Base
- Octal
Filament Voltage
- 5V5 V
- 5V
Max Average Plate Current
- 440 mA440 mA
- 440 mA
Max Peak Plate Current
- 2.5 A2.5 A
- 2.5 A
Peak Reverse Voltage
- 1400V1400 V
- 1400V

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