The LCA® Hermetically Sealed Filter Series is a high-end solution specifically designed to address electromagnetic interference (EMI) issues in extreme environments. Adopting precision glass-sealing technology, this series achieves high-hermeticity packaging. Combined with its compact package size and wide range of electrical parameters, it delivers unparalleled signal integrity in microwave circuits and high-frequency systems.
A hermetically sealed feedthrough filter is a high-reliability EMI/RFI suppression component designed to block unwanted electromagnetic interference while allowing the desired power or signal to pass through. Unlike conventional epoxy-sealed filters, hermetic filters utilize a glass-to-metal sealing structure that creates an airtight barrier against moisture, dust, pressure changes, and other environmental contaminants. This construction ensures stable electrical performance and long service life in demanding applications.
HB4033-001A features a 1000 pF capacitance, 200 VDC rated voltage, and C-type circuit configuration. It provides an excellent balance between compact dimensions, filtering effectiveness, and long-term operational stability.
✔ Excellent EMI/RFI Suppression
✔ Gold-Plated Metal Housing
✔ High Mechanical Strength
✔ Protects sensitive electronics from conducted EMI
✔ Improves system stability and signal integrity
✔ Extends product service life under demanding operating conditions
Glass-to-metal sealing creates a permanent, leak-tight barrier between internal electrical components and the external environment. Unlike conventional epoxy sealing, hermetic construction offers significantly enhanced protection against moisture, dust, corrosive gases, pressure fluctuations, and thermal stress.
This sealing technology enables stable electrical performance over extended service periods while minimizing the risk of insulation degradation caused by environmental exposure.
Hermetically sealed filters are specifically designed for mission-critical applications requiring continuous and dependable operation. Their robust construction helps maintain consistent insertion loss, insulation resistance, and filtering performance even under severe environmental conditions.
Aerospace & Avionics
Hermetically sealed filters are extensively used in avionics, flight control systems, navigation equipment, satellite communication payloads, and airborne electronic modules. Their glass-to-metal sealing construction withstands rapid pressure changes, temperature cycling, and harsh environmental conditions while maintaining stable EMI suppression throughout long service life.
Medical Equipment
High-end medical imaging systems, MRI equipment, CT scanners, patient monitoring devices, and laboratory instruments require extremely stable electrical performance. Hermetic filters help minimize conducted noise, improve signal integrity, and enhance the operational reliability of sensitive medical electronics operating continuously over extended periods.
RF & Microwave Systems
These filters are widely applied in RF amplifiers, microwave communication equipment, satellite ground stations, precision signal processing modules, and high-frequency electronic systems. Their excellent EMI suppression and low parasitic characteristics help preserve signal quality while improving electromagnetic compatibility.
Industrial High-Reliability Electronics
Suitable for industrial automation, energy systems, railway electronics, harsh-environment control equipment, and critical infrastructure, hermetically sealed filters provide dependable EMI protection where continuous operation and environmental durability are essential for system reliability.
Selecting the right supplier is just as important as selecting the right component. LCA combines manufacturing expertise, engineering support, and flexible customization capabilities to help customers achieve reliable EMI filtering solutions for demanding electronic applications.
Every hermetically sealed filter undergoes comprehensive quality control procedures, including electrical performance verification, visual inspection, dimensional inspection, and sealing integrity testing. Strict manufacturing controls and traceable production processes help ensure consistent product quality and long-term reliability for critical electronic applications.
✔ Incoming Material Inspection
✔ In-process Quality Control
✔ Final Electrical Testing
✔ Dimensional Inspection
✔ Traceability
Every electronic system has unique electrical and mechanical requirements. In addition to our standard hermetically sealed filter product range, LCA offers comprehensive customization services to support specialized applications across RF, microwave, aerospace, medical, and industrial markets.
Selected hermetically sealed filters are available with gold wire bondable terminals, allowing direct integration into hybrid circuits, microwave assemblies, and advanced electronic packaging.
Customized bonding structures and bonding pad designs are also available according to customer requirements.
LCA manufactures high-performance EMI/RFI filtering components using precision machining and carefully selected materials. Continuous process control and production optimization ensure consistent quality while supporting both standard products and customized OEM solutions.
Glass-to-metal sealing provides a permanent hermetic barrier between the internal filtering elements and the external environment. Compared with epoxy sealing, it offers significantly higher resistance to moisture ingress, thermal cycling, vibration, pressure variations, and corrosive environments. This technology helps maintain insulation resistance, electrical stability, and reliable filtering performance throughout the product’s service life, making it ideal for mission-critical electronic systems.
Both filter types provide effective EMI suppression, but they are designed for different operating environments. Epoxy-sealed filters are suitable for general industrial and commercial applications where cost-effectiveness and reliable performance are important. Hermetically sealed filters are specifically designed for aerospace, military, medical, and other high-reliability applications where long-term environmental protection, superior sealing performance, and maximum reliability are essential.
Hermetically sealed filters are commonly used in aerospace electronics, military communication systems, radar equipment, satellite electronics, medical imaging devices, industrial control systems operating in harsh environments, RF and microwave equipment, and other mission-critical electronic systems where environmental sealing and long-term reliability are required.
Hermetically sealed filters isolate the internal filtering components from environmental influences such as moisture, dust, corrosive gases, and pressure fluctuations. By maintaining stable electrical characteristics over extended operating periods, they help reduce the risk of insulation degradation, electrical failure, and EMI-related performance issues, ultimately improving the overall reliability of critical electronic systems.
Yes. Selected Hermetically Sealed Filters can be supplied with gold wire bondable terminals for integration into hybrid circuits, microwave modules, aerospace electronics, and other advanced electronic assemblies.
Customized bonding configurations are also available upon request.
The operating temperature range varies by model and design requirements. Specific values can be found in the product datasheet or provided by LCA engineering support.
Yes. LCA provides comprehensive customization services for hermetically sealed filters, including capacitance values, voltage ratings, circuit configurations, housing dimensions, mounting styles, terminal configurations, plating finishes, and gold wire bonding options. Our engineering team works closely with customers to develop solutions that meet specific electrical and mechanical requirements.
LCA is customer demand-centric. With professional technical capabilities, rigorous implementation processes, and considerate full-cycle services, it creates exclusive solutions for customers with diverse needs!
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