5557/FG17 Electron Tube

NL-5557/FG17 Tube Specs The NL-5557/FG17 is a high-quality gas-filled hydrogen thyratron electron tube designed for high-voltage, high-speed pulsed RF applications. Below are the general technical specifications. For full details, see the datasheet in the section below. Specification Details Operating Voltage Up to 36,000 volts Peak Current Up to 600 amps Delay Time < 0.5 microseconds Tube Type Hydrogen thyratron Cooling Method Air or water (based on system design) Envelope Type Ceramic/Glass Frequency Compatibility Up to 110 MHz Common Applications RF sealing, dielectric welding, pulse modulators NL-5557/FG17 Tube Data Sheet Download For full performance and power specs, frequency response, and mounting details, download the complete NL-5557/FG17 tube data sheet below. Ideal for technicians, engineers, and maintenance teams working on high-voltage RF systems. Download NL-5557/FG17 Datasheet (PDF) NL-5557/FG17 Tube Substitute & Equivalent Information The NL-5557/FG17 is a widely used hydrogen thyratron designed for fast-pulse switching in RF generators, RF sealing equipment, and dielectric welding systems. If you’re looking for a Richardson NL-5557/FG17 tube equivalent, Penta Labs offers fully compatible replacements that meet or exceed OEM specifications. This tube is ideal for systems where fast recovery time, high peak current, and precision pulsing are critical. It's frequently used in plastic welding, food packaging, and medical RF pulse modulators. As trusted vacuum tube dealers, we carry a large inventory of hard-to-find and specialty tubes. Browse our full range of vacuum tubes for sale, or explore related product categories like hydrogen thyratron, RF sealing equipment, and high frequency welding. Let our team help you source the exact NL-5557/FG17 tube equivalent for your application, contact us today.