Cathode Heaters and Electron Device Filaments

CATHODE HEATERS AND ELECTRON DEVICE FILAMENTS

Union City Filament’s experience with cathode heaters, microwave tube heaters, and electron tube filaments spans our entire history. Our filaments and heaters are used in a myriad of vacuum electron devices including traveling wave tubes, klystrons, power grid tubes, thyratrons, and related dispenser cathodes. This product line includes space-qualified heaters and fast warm-up heaters in applications where consistent and flawless reliability is essential.

Filament and heater designs vary greatly in such devices, but Union City Filament is accustomed to recommending appropriate configurations and modifying specifications to suit device requirements and functionalities. Typical materials include tungsten, 3% rhenium tungsten, and thoriated tungsten. Cathode heaters and electron tube filaments are available coated in one of our alumina coating blends.

CATHODE HEATHER AND ELECTRON DEVICE FILAMENT PRODUCTS

Single Helix Filament with tapered, variable pitch turns. Most commonly used in Microwave Tubes.

Single Helix Filament with one leg formed to the center of the coil. Shown with HC-93 coating. Most commonly used in Microwave Tubes.

Single Helix Filament with both legs formed to the center of the coil. Shown with Alumina Coating. Most commonly used in Microwave Tubes and Scientific Research Applications.

Single Helix Filament with no legs. Ends can be closed. Most commonly used as a High-Temperature Spring.

Single Helix Filament with no legs. Most commonly used as a High-Temperature Spring and in Microwave Tubes.

Single Helix Filament with no legs. Shown with ground ends. Most commonly used as a High-Temperature Spring and in Microwave Tubes.

Double Helix (Bifilar) Filament with standard crossover. Shown with Alumina Coating. Most commonly used as a Cathode Heater.

Double Helix Coiled Coil Filament. Shown with Alumina Coating and with one leg formed to the center of the coil. Most commonly used as a Cathode Heater.

Double Helix Coiled Coil Filament. Shown with Alumina Coating and with both legs positioned inward from the coil diameter. Most commonly used as a Cathode Heater.

Coaxial Stacked Filament. Shown with Alumina Coating. Most commonly used as a Cathode Heater.

Double Helix (Bifilar) Filament with loop-top crossover. Most commonly used in Microwave Tubes.

Single Helix Flat Spiral Filament. Most commonly used in Scientific Research Applications.

Single Helix Coiled Coil Flat Spiral Filament. Shown with Alumina Coating. Most commonly used in Microwave Tubes.

Double Helix Flat Spiral Filament. Most commonly used in X-ray Tubes and Scientific Research Applications.

Double Helix Flat Spiral Filament. Shown with Alumina Coating. Most commonly used in Microwave Tubes.

Stacked Flat Spiral Filament. Shown with Alumina Coating. Most commonly used in Microwave Tubes.

Planar "Potato Masher" Filament. Most commonly used in Microwave Tubes and Scientific Instruments.

Single Helix Toroidal Filament. Shown with Alumina Coating. Most commonly used as a Cathode Heater and in Scientific Research Applications.

Double Helix Toroidal Filament. Most commonly used as a Cathode Heater and in Scientific Research Applications.

Center Return Toroidal Filament. Most commonly used as a Cathode Heater.

CATHODE HEATERS AND ELECTRON DEVICE FILAMENTS INQUIRY

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