How to Choose a Ceramic Vacuum Feedthrough: The Complete Selection Guide

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What Is Ceramic Vacuum Feedthrough?

 

The ceramic vacuum feedthrough is a ceramic to metal seals components, it is a ‘feedthrough’ hermetic connector that allows electrical power, signals, motion, or fluids to safely pass through the wall of a vacuum chamber. It uses 95% alumina ceramic as an insulator to achieve vacuum sealing, and is a critical component in many vacuum devices.

 

It is widely used in:

 

  • Semiconductor equipment
  • Vacuum chambers
  • High-voltage systems
  • Plasma and ion beam applications

Step-by-Step Feedthrough Selection Guide

 

1. Define Voltage Requirement (kV)

 

  • Up to 10kV → standard applications
  • Up to 12kV+ → high voltage systems

 

Example:

 

If you are searching for 12kV high voltage vacuum feedthrough CF flange→ consider 8 Pin 12kV models

 

2. Determine Current (Amps)

 

  • Multi-pin → lower current per pin
  • Fewer pins → higher current capacity

 

Example:

 

  • Need 30A high current → choose 4 Pin feedthrough
  • Need multiple signals → choose 8 Pin feedthrough

3. Number of Pins (Signal vs Power)

 

Use CaseRecommendation
Complex signal routing8 Pin
High power transmission4 Pin

4. Flange Type (Compatibility)

 

Most systems use CF flanges (CF2.75 , CF35)

 

If users search:
“CF2.75 vacuum feedthrough connector”
→ ensure exact flange match

 

5. Conductor Material Selection

 

MaterialWhen to Use
CopperHigh conductivity / power systems
MolybdenumHigh temperature / harsh environments

6. Vacuum Level (HV / UHV)

 

  • HV → standard sealing
  • UHV → requires ceramic-to-metal brazing

Common Mistakes When Selecting Feedthroughs

 

  • Ignoring current rating (overheating risk)
  • Choosing wrong flange size
  • Not considering temperature limits
  • Using signal feedthrough for power applications

Recommended Products

 

For High Voltage & Multi-Pin Applications

 

8 Pin 12kV Ceramic Feedthrough

 

  • Ideal for semiconductor & UHV systems
  • Supports 12kV / 28A

For High Current Power Systems

 

4 Pin 10kV 30A High Current Feedthrough

 

  • Optimized for power delivery
  • Up to 30A per conductor

For High Current & Multi-Pin Applications

 

8 Pin 30A 10kV Ceramic Feedthrough

 

  • Ideal for UHV systems
  • Up to 30A per conductor

 

8 Pin 30A 10kV CF2.75 Ceramic Vacuum Connector

Declaration: This is an original article of INNOVACERA®. Please indicate the source link when reprinting: https://www.innovacera.com/news/ceramic-vacuum-feedthrough-selection-guide.html 

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