The BNC Type Vacuum Flange Feedthrough (KF40) from InSealing is a precision-engineered electrical penetration designed for high-vacuum (HV) environments. This component provides a robust and hermetic solution for transmitting high-frequency coaxial signals from external atmospheric equipment into the vacuum chamber interior.
Utilizing the industry-standard ISO-KF40 interface, this vacuum flange assembly ensures a leak-tight seal while maintaining superior signal integrity. It is an essential component for systems requiring rapid installation, high durability, and minimal signal interference.
Key Features & Advantages
- Standard KF40 Interface: Designed for ISO-KF40 flanges (approx. 55mm OD), allowing for quick-release installation and compatibility with standard vacuum hardware.
- Hermetic Signal Transmission: Engineered to provide a consistent electrical path with zero vacuum loss, even in sensitive analytical environments.
- Advanced Material Bonding: Features high-purity ceramic insulators and stainless steel bodies joined via advanced vacuum brazing technology.
Configuration & Customization Options
To meet diverse research and industrial needs, InSealing offers this BNC-style vacuum interface in several specialized configurations:
1. Channel Capacity
- Single-Way: Ideal for basic coaxial signal monitoring.
- Multi-Channel (e.g., Quad-BNC): Features multiple BNC ports on a single KF40 flange, perfect for high-density instrumentation setups.
2. Impedance Control
- 50 Ω Matched Type: Optimized for RF (Radio Frequency) and high-speed data signals to prevent reflection and signal degradation.
- General Purpose (Non-Matched): Suitable for low-frequency signals, DC power, or basic control logic.
3. Shielding & Grounding Schemes
- Grounded Type: The outer coaxial shield is electrically bonded to the stainless steel flange for maximum EMI protection.
- Floating Type: The shield is electrically isolated from the flange, preventing ground loops in sensitive electronics.
4. Vacuum-Side Interface
- Single-Ended: Atmospheric BNC port with vacuum-side solder pins for custom internal wiring.
- Double-Ended (BNC-BNC): BNC connectors on both sides, enabling a fully modular “plug-and-play” vacuum system.
Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Product Name | BNC Type Vacuum Flange Feedthrough |
| Flange Standard | ISO-KF40 (NW40) |
| Voltage Rating | ≤ 500 V DC |
| Current Rating | Approx. 3 A per pin |
| Vacuum Leak Rate | ≤ 1.0 × 10⁻⁹ mbar·L/s (He) |
| Thermal Resistance | 150 °C (Standard) / Higher upon request |
| Body Material | SS304 / SS304L Stainless Steel |
| Insulation Type | High-Purity Alumina (Al₂O₃) Ceramic |
Industry Applications
- Semiconductor Wafer Processing & Deposition
- Mass Spectrometry and Electron Microscopy
- High-Energy Physics & Laboratory Research
- RF Signal Introduction into Vacuum Chambers
- Aerospace Testing & Simulation Components