In RF and Microwave applications, Hermetic Glass To Metal Seal Connectors are often referred to as ‘RF Hermetic Connectors’ and are designed to provide superior electrical performance and environmental sealing in extreme environmental conditions.

Hermetic sealing technology is essential for maintaining the integrity of RF systems in harsh environments, ensuring that no external elements, including liquids, gases, or particulates, can penetrate the system and cause damage.

What are Hermetic Glass To Metal Seal Connectors

Hermetic Glass To Metal Seal Connectors are electrical connectors manufactured using glass-metal sealing technology, capable of achieving hermetic and liquid-tight connections under harsh conditions. These connectors form a vacuum-sealed electrical connection by combining metal and glass materials.

Advantages

In the realm of RF and microwave, Hermetic Glass To Metal Seal Connectors boast a range of notable advantages and benefits:

• Exceptional Sealing: These connectors offer the highest level of sealing, ensuring no external elements, be it liquids, air, or gases, can infiltrate or escape, thus safeguarding the internal electronic packages from harm.
• Broad Application Compatibility: They are compatible with a variety of RF connector series from SMA to SMA, 2.9mm, SMC, SMB,  BNC, TNC, N-type, SMPM, SMP, and 2.4mm, meeting diverse application needs.
• High Reliability: The glass-to-metal sealing technology, proven over decades, provides long-term reliability and durability even in harsh operating environments.
• Outstanding Electrical Performance: By fusing glass to metal components, Hermetic Glass To Metal Seal Connectors maintain optimal electrical performance and offer a high level of electromagnetic interference shielding.
• Suitable for High-Pressure Environments: These connectors can withstand pressures up to 10,000 psi or higher, ensuring a stable pressure differential across the components.
• Lightweight Solutions:Connectors made from aluminum or titanium materials can reduce weight by 60% compared to stainless steel, while maintaining sealing integrity and electrical performance.
• Tolerance to Temperature and Vibration: Designed to withstand extreme temperature variations and destructive vibrations, they are suitable for extreme environment applications such as military and aerospace.
• Customization Services: Manufacturers like Vinstronics offer rapid prototyping and customization services from initial concept to finished parts, capable of meeting both low-volume custom orders and mass production needs.
• Advanced Material Technology: The use of special glass materials and precise machining techniques ensures the connectors’ stability and performance under high pressure and temperature conditions.
• Long-Term Durability: Glass-to-metal sealed connectors hardly degrade, maintaining high sealing for decades, making them ideal for applications requiring long-term reliability.

These advantages make Hermetic Glass To Metal Seal Connectors the ideal choice in the RF and microwave field for applications demanding high reliability, high sealing, and stable operation in harsh environments.

Applications

Hermetic Glass-to-Metal Seal Connectors find extensive applications in various fields:

• Aerospace: They ensure the normal operation of electronic systems in satellites and aircraft under extreme conditions.
• Military and Defense: They secure the safety and reliability of electronic connections in missile systems, submarines, and other military equipment.
• Medical Equipment: They protect sensitive electronic devices in medical environments that require high-pressure sterilization.
• Automotive Industry: They provide essential electrical connections in critical systems such as automotive airbags.
• Energy Sector: They withstand harsh underground conditions in oil and gas exploration.

These connectors play a crucial role by bridging the gap between different materials, ensuring seamless performance across diverse applications.

Technical Specifications

• Operating Frequency: DC to 42 GHz, can be used up to 70 GHz
• Impedance: 50 Ohms
• Sealing Level: Below \(1 \times 10^{-8}\) atm cc/s He
• Operating Temperature Range: -65°C to +175°C
• Contact Resistance: Below 12 mΩ
• Insulation Resistance: Exceeding 5000 MΩ
• Mating Cycle Durability: Capable of withstanding up to 500 mating cycles

Environmental Adaptability

• Withstands high pressure
• Resists extreme temperature fluctuations
• Endures vibrations
• Protects against humidity
• Provides more reliable protection than non-hermetic polymer seals
• Prevents moisture intrusion, condensation, and leakage
• Particularly suitable for harsh environments

Sealing Technology

• Utilizes two sealing techniques: compression sealing and matched sealing.
• Compression sealing employs glass and metal with significantly different coefficients of thermal expansion (CTE).
• The metal housing shrinks firmly onto the sealing glass during production, creating a seal with high physical strength.
• Matched sealing requires the glass and metal to have similar CTEs to minimize stress on the glass from thermal expansion and contraction.

Customized Service

Vinstronics provides extensive customization services. We choose the most suitable sealed glass, design and verify the encapsulation and through-holes, and oversee the sealing process, plating, and system integration. Leveraging our in-house development skills, we modify or create new glass types to address specific challenges and enable novel applications.