Custom High-Current Vacuum Feedthroughs for UHV Power

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.