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 Case | Recommendation |
|---|---|
| Complex signal routing | 8 Pin |
| High power transmission | 4 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
| Material | When to Use |
|---|---|
| Copper | High conductivity / power systems |
| Molybdenum | High 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
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