D38999 Hermetic Connectors
D38999 Hermetic Connectors
Key Features
- Glass-to-metal sealed feedthrough design isolates each contact pin for true hermetic separation
- Typical hermetic sealing performance up to 1×10⁻⁷ atm·cm³/s depending on configuration
- Individual contact insulation structure prevents cross-leakage between signal paths
- Designed for sealed enclosure and vacuum boundary feedthrough applications
- Supports MIL-DTL-38999 Series III interface geometry with standard shell compatibility
- Metal shell structure maintains 360° EMI shielding continuity at panel interface
- Contact layouts available in signal, power, coax, and hybrid arrangements
- Compatible with high-vibration environments validated under MIL-STD testing conditions
- Available with stainless steel or aluminum shells depending on corrosion and weight requirements
- Mounting options include jam nut, flange, and bulkhead sealed configurations
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MIL-DTL-38999 Hermetically Sealed Circular Connectors for Aerospace & Defense
D38999 Hermetic Connectors are designed for mission-critical systems that require reliable sealing, stable signal transmission, and long-term performance in harsh environments. Based on the MIL-DTL-38999 standard, these hermetically sealed circular connectors combine high-density contact layouts, rugged mechanical construction, and advanced glass-to-metal sealing technology to deliver exceptional reliability in aerospace, defense, vacuum, and industrial applications.
Engineered for demanding operating conditions, our D38999 hermetic connectors provide excellent resistance to moisture, pressure differentials, vibration, shock, EMI/RFI interference, and extreme temperatures. They are widely used in avionics, radar systems, flight controls, satellites, sealed enclosures, military communications, and other high-reliability electronic systems.
Why Choose D38999 Hermetic Connectors?
Reliable Hermetic Sealing
Our MIL-DTL-38999 hermetic connectors utilize precision glass-to-metal sealing technology to create a highly reliable barrier against gas leakage and environmental contamination. This construction helps maintain electrical integrity in vacuum systems, pressurized equipment, and moisture-sensitive electronic assemblies.
The hermetic design is ideal for applications where long-term sealing performance is critical, including aerospace electronics, military platforms, and harsh-environment industrial systems.
High-Density Circular Connector Design
D38999 hermetic connectors offer compact, space-saving configurations with high contact density. The rugged circular design supports efficient signal, power, and data transmission while minimizing installation space in complex electronic systems.
Multiple shell sizes, insert arrangements, and contact configurations are available to support a wide range of application requirements.
Exceptional Resistance to Harsh Environments
Designed for severe-duty applications, these hermetically sealed connectors provide outstanding resistance to:
- Extreme temperature variations
- High vibration and mechanical shock
- Humidity and moisture ingress
- Corrosion and harsh chemicals
- EMI/RFI electromagnetic interference
- Pressure differentials and vacuum conditions
Their rugged construction makes them suitable for aerospace, defense, marine, industrial automation, and energy applications where connector failure is not acceptable.
EMI/RFI Shielding Performance
D38999 Hermetic Connectors feature conductive metal shells and high-performance grounding structures that help reduce electromagnetic interference and improve signal integrity in sensitive electronic systems.
This makes them an excellent solution for avionics, military communication equipment, radar systems, navigation electronics, and high-speed data transmission applications.
Available Connector Configurations
We offer a wide range of D38999 hermetic connector configurations to meet diverse application requirements.
Shell Styles
- Jam Nut Receptacles
- Box Mount Receptacles
- Wall Mount Receptacles
- Solder Mount Receptacles
- Weld Mount Receptacles
- Hermetic Feedthrough Connectors
Contact Types
- Signal Contacts
- Power Contacts
- High-Speed Data Contacts
- Coax Contacts
- Twinax Contacts
- Fiber Optic Hybrid Configurations
Materials & Finishes
Available shell materials and finishes include:
- Aluminum Alloy
- Stainless Steel
- Nickel Plating
- Cadmium Olive Drab Finish
- Electroless Nickel
- Passivated Stainless Steel
Typical Applications
Aerospace & Avionics
D38999 hermetic connectors are widely used in aircraft electronic systems where reliability and environmental sealing are essential. Typical aerospace applications include:
- Flight control systems
- Avionics modules
- Navigation equipment
- Radar systems
- Satellite communication systems
- Engine monitoring systems
Defense & Military Systems
Built for mission-critical military environments, these connectors are suitable for:
- Tactical communication equipment
- Battlefield electronics
- Missile systems
- Ground vehicles
- Naval systems
- Electronic warfare systems
Vacuum & Sealed Equipment
The low-leakage hermetic structure makes these connectors ideal for:
- Vacuum chambers
- Pressurized enclosures
- Scientific instruments
- Semiconductor equipment
- Sensor systems
- High-reliability industrial electronics
Custom D38999 Hermetic Connector Solutions
In addition to standard MIL-DTL-38999 hermetic connectors, we also provide customized solutions tailored to specific electrical, mechanical, and environmental requirements.
Customization options include:
- Custom shell sizes
- Special contact arrangements
- Mixed power and signal layouts
- Application-specific mounting structures
- Custom cable termination options
- Special plating and materials
Our engineering team supports both prototype development and volume production for aerospace, defense, and industrial projects.
Quality & Reliability
Our D38999 Hermetic Connectors are manufactured with strict quality control processes to ensure stable performance and long service life in demanding environments.
Each connector is engineered for high reliability and designed to meet the expectations of mission-critical applications where connector integrity is essential.
FAQ
What is a hermetic connector?
A hermetic connector is a sealed electrical connector designed to prevent gas, moisture, or air leakage between environments. Hermetic connectors are commonly used in aerospace, military, vacuum, and high-reliability electronic systems.
What is the difference between standard and hermetic D38999 connectors?
Standard D38999 connectors provide environmental sealing against moisture and dust, while hermetic D38999 connectors provide an additional airtight sealing barrier using glass-to-metal sealing technology for low leakage performance.
Are D38999 hermetic connectors suitable for vacuum applications?
Yes. Their low-leakage hermetic structure makes them highly suitable for vacuum chambers, pressurized systems, and other controlled-environment equipment.
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Strict Production Process
Engineers develop optimized electronic circuits and structural designs based on real application needs.
High-quality components and materials are carefully selected from trusted suppliers to ensure long-term reliability.
Automated SMT and precision soldering technologies are used to build stable and high-performance circuit boards.
Sensor elements or connector terminals are assembled with the PCB and housing to ensure accurate operation and strong mechanical stability.
Each product undergoes strict calibration and functional testing to guarantee accuracy and stable performance.
Every unit is carefully inspected, labeled, and securely packaged to ensure it arrives safely and performs reliably for your applications.
Strict Production Process of Yafeite
