Sylvania ECG 5U4GB-5AS4A Electronic Rectifier Vacuum Tube NOS The Sylvania ECG 5U4GB-5AS4A is a New Old Stock (NOS) full-wave rectifier vacuum tube, designed to convert alternating current (AC) into direct current (DC) in electronic circuits. This tube is commonly utilized in power supply sections of television receivers and other equipment requiring high direct-current output. Key Features Full-Wave Rectification: Efficiently converts AC to DC, providing stable power for electronic devices. Filamentary Twin Diode Design: Ensures reliable performance in high-demand applications. Compatibility: Serves as a direct replacement for 5U4G and 5U4GA tubes, offering versatility in various electronic setups. Technical Specifications Filament Voltage: 5.0 Volts Filament Current: 3.0 Amperes Peak Inverse Plate Voltage (Max): 1550 Volts AC Plate Supply Voltage (Each Plate, RMS) (Max): 550 Volts Steady State Peak Plate Current (Each Plate) (Max): 1.0 Amperes Transient Peak Plate Current (Each Plate) (Max): 4.6 Amperes Applications Ideal for use in power supply circuits of television receivers and other electronic equipment with high DC requirements. Its robust construction and reliable performance make it a preferred choice for maintaining and restoring vintage electronics. Packaging and Condition This NOS tube is available in its original packaging, ensuring it has never been used and is in pristine condition. Please note that while the tube is new, the packaging may show signs of age due to its vintage nature. Note Brands may vary. The photo is for reference only and may not exactly represent the final product received.