As 5G communication development, the requirement for its core parts is becoming more and more strict. Electronic filter as the core component of communication equipment, continuously improving the technology, as one of the main important parts in filters is metalized ceramic parts.
Innovacera provides customized and common metalized ceramic parts for filters, one of the common parts is metalized ceramic bushings.
What’s the function of metalized ceramic bushings in Filters
1.Feedthrough Capacitor Filters
Metalized ceramic bushings are commonly integrated into feedthrough capacitor filters to suppress electromagnetic interference (EMI) and radio frequency interference (RFI) in electronic circuits. The filters are mostly installed on bulkheads, enclosures, or metal cases of sensitive electronic devices.
In this application:
– The metalized ceramic bushing provides electrical insulation between the inner conductor and the metal case.
– The metalized layer provides good adhesion when brazing or soldering ceramic to the metal, ensure a hermetic seal.
– The ceramic bushing can block high-frequency noise when the central conductor is passed through it, forming a coaxial structure that helps maintain signal integrity.
2.Hermetic Filter Assemblies
In aerospace, military, medical, and telecom environments where both EMI shielding and hermeticity are required, metalized ceramic bushings serve as the interface between the internal filter elements and the metal housing. These assemblies are often used in:
– EMI/RFI filtered connectors
– Power line filters
– Signal line filters
The ceramic bushing allows the internal electrical elements to connect externally while:
– Preventing moisture, gases, or contaminants from entering the sealed enclosure
– Maintaining high dielectric strength to prevent voltage breakdowns
3.High-Voltage Filters
In high-voltage filter systems, such as those found in power electronics, radar systems, and medical imaging equipment, metalized ceramic bushings provide critical isolation and mechanical support. They ensure that high-potential conductors are securely and safely passed through grounded filter housing.
Therefore, metalized ceramic bushings are the indispensable components that has been applied in electrical, mechanical, and sealing interfaces. Whether used in EMI feedthrough filters, hermetic filter connectors, or high-voltage filter assemblies, they ensure safe signal or power transfer while maintaining electrical isolation, shielding integrity, and environmental protection.
Enquiry