High-current vacuum feedthroughs provide hermetic electrical interfaces for transmitting high-amperage power across HV/UHV vacuum boundaries. They are engineered for applications requiring stable current delivery, low contact resistance, and thermal reliability, such as heaters, filaments, magnets, and high-power experimental systems. Current range: tens to hundreds of amperes (application dependent) Signal type: DC or low-frequency power Vacuum rating: HV / UHV compatible Conductor: solid metal pin or high-current rod Thermal design: optimized for continuous operation Mounting: CF / KF / custom flange What This Product Demonstrates This page shows representative high-current vacuum feedthrough designs. Final products are custom-engineered based on current level, duty cycle, thermal constraints, and mechanical integration. Typical Applications Vacuum heaters and heating stages Filament and cathode power feeds Electromagnets and solenoids Vacuum furnaces and thermal processing systems High-current laboratory test chambers What Is a High-Current Vacuum Feedthrough? A high-current vacuum feedthrough allows electrical power to pass from atmosphere into a vacuum chamber while maintaining vacuum integrity and electrical isolation. Unlike signal feedthroughs, high-current designs focus on conductor cross-section, contact resistance, and heat dissipation to ensure stable operation under continuous load. Key Design Considerations Maximum continuous and peak current Conductor material and cross-sectional area Thermal rise and heat dissipation Contact resistance and mechanical stability Compatibility with vacuum bakeout Customization Options Maximum current rating (A) Continuous vs pulsed operation Single-pin or multi-conductor layouts Flange type and size Conductor length and termination style Thermal management considerations Engineering Specification Checklist Target current (A) and duty cycle Operating voltage (if applicable) Vacuum level (HV / UHV) Bakeout temperature requirement Flange standard and mechanical constraints Termination type (stud, lug, cable, custom) Related Feedthrough Solutions Accelerator & BPM Feedthroughs RF & Microwave Vacuum Feedthroughs High-Voltage Vacuum Feedthroughs Custom & Hybrid Feedthroughs FAQ What current levels can high-current vacuum feedthroughs support?High-current vacuum feedthroughs can be designed for tens to hundreds of amperes, depending on conductor size, thermal design, and duty cycle. Can high-current feedthroughs operate continuously?Yes. Designs can support continuous current operation when thermal rise, contact resistance, and cooling constraints are properly addressed. Are high-current feedthroughs compatible with UHV and bakeout?Yes. With suitable materials and sealing methods, high-current feedthroughs can be designed for UHV environments and high-temperature bakeout.
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