Custom High-Current Vacuum Feedthroughs
High Current Vacuum Feedthroughs (Power Delivery, Thermal Stability)
High-current conduction across vacuum boundaries for heaters, filaments, magnets, and fixtures.
- Best for:filament heaters, magnets, vacuum furnaces, experimental chambers
- Common interfaces:stud/cable terminations, robust mechanical mounting
- Customization: current, allowable temperature rise, duty cycle, cooling constraints
Power Delivery Interfaces for Heaters, Magnets & Vacuum Systems
Overview
High current vacuum feedthroughs are designed to transmit large electrical currents across vacuum boundaries while maintaining thermal, mechanical, and vacuum stability. They are widely used for heaters, filaments, magnets, and experimental fixtures.
What Is a High Current Vacuum Feedthrough?
A high current feedthrough provides a robust conductive path through a vacuum flange using heavy conductors and hermetic sealing. The design focuses on thermal management and mechanical strength, rather than high-voltage insulation.
Why High Current Design Matters
High-current operation introduces:
- Resistive heating
- Thermal expansion and stress
- Mechanical loading on seals
- Long-term reliability concerns
Proper design ensures stable current delivery without overheating or vacuum degradation.
Current Capability & Design Features
- Current capability: tens to hundreds of amperes (application dependent)
- Key features:
- Large cross-section conductors
- Low-resistance materials
- Robust mechanical support
- UHV-compatible sealing
- CF / custom flange options
Typical Applications
- Filament and cathode heaters
- Magnet and coil connections
- Vacuum furnaces
- Experimental heating stages
- High-current laboratory test setups
Customization Options
- Current rating and duty cycle
- Conductor material and geometry
- Termination type (lug, stud, cable)
- Flange size and layout
- Cooling or thermal constraints
Engineering Specification Checklist
- Required current (A)
- Duty cycle (continuous or pulsed)
- Allowable temperature rise
- Flange type and size
- Termination preference
- Mechanical constraints