Ceramic-to-metal feedthroughs, multipin connectors and brazed sealing assemblies combine electrical insulation with metal mounting and conductor interfaces for equipment that must operate under vacuum, pressure, high voltage, high current or repeated thermal cycling.
Brazed ceramic vacuum feedthroughs introduce power, signals or sensor connections through a sealed chamber wall. High-purity alumina provides electrical isolation while stainless steel, Kovar, molybdenum or other matched metals form the conductor and mounting interfaces for vacuum furnaces, test chambers and scientific equipment.
View Vacuum Feedthroughs
Hermetic electrical interfaces for vacuum chambers
Power and signal feedthroughs are used in PVD, CVD, sputtering, plasma and vacuum coating systems where conductive paths must cross the chamber boundary without compromising insulation or sealing. Geometry, conductor size, flange style and shielding can be reviewed around the process voltage, current and chamber layout.
Power feedthroughs for coating and plasma processes
Multipin ceramic and glass-to-metal connectors transmit instrumentation signals, voltage and current in mass spectrometers, pressure transducers, electron microscopes and analytical test systems. Compact pin layouts support reliable electrical isolation and sealed connection where space and signal routing are tightly controlled.
Sealed signal and sensor connections
Ceramic-to-metal power feedthroughs provide insulated conductor paths for CO₂ laser power supplies, high-voltage vacuum assemblies, RF systems and industrial power equipment. Alumina insulation, conductor material, brazed joint design and mounting geometry are selected together to manage electrical loading and long-term thermal reliability.
Insulated power transmission for laser systems
Review ceramic-to-metal sealing structures, vacuum feedthroughs, multipin assemblies and compact hermetic connectors produced for industrial and scientific equipment.
An overview of hermetic ceramic-to-metal components for vacuum, electrical, aerospace, medical and industrial applications.
See a brazed alumina-to-metal feedthrough designed for vacuum power and signal transfer.
A compact multi-conductor solution for vacuum-tight current and signal transmission.
Review a compact sealed connector for dense electrical and electronic interfaces.
See customized pin count, flange and sealing options for high-vacuum systems.
Engineering guidance on hermetic sealing, material combinations, brazing, electrical ratings, vacuum performance, operating temperature and RFQ requirements.
It is a joined component that combines an electrically insulating technical ceramic with metal conductors, flanges, housings or terminals. The assembly is designed to transmit power or signals, provide a mechanical interface and maintain a sealed boundary in vacuum, pressure or demanding thermal environments.
A common route is to metallize the ceramic surface and then braze it to the selected metal. Glass-to-metal sealing may also be used for connector and feedthrough structures. The joining method depends on the ceramic, metal thermal expansion, geometry, leak requirement, temperature and electrical load.
High-purity alumina is widely used for electrical insulation and vacuum compatibility, while aluminum nitride may be considered when higher thermal conductivity is needed. Metal options can include Kovar, stainless steel, molybdenum, nickel-iron alloys, copper and copper alloys, depending on thermal-expansion matching, corrosion, conductivity and joining requirements.
Yes. Ceramic-to-metal feedthroughs can be engineered for high-vacuum and ultra-high-vacuum service using vacuum-compatible materials and controlled brazing processes. The target helium leak rate, bakeout temperature, flange standard and test method should be stated in the RFQ.
Ratings depend on ceramic creepage distance, insulation thickness, conductor diameter, pin spacing, ambient or vacuum conditions, temperature rise, shielding and mounting geometry. Provide the continuous and peak voltage/current values together with frequency, duty cycle and allowable temperature rise.
Common solutions include weldable housings, threaded mounts, custom flanges and ISO-KF-style interfaces, as well as BNC, rectangular, Micro-D and multipin layouts. Availability depends on the electrical rating, pin count, chamber connection and sealing method required by the equipment.
They can be designed for repeated heating, cooling and bakeout cycles when ceramic, metal and brazing alloy are properly matched. The engineering review should include minimum and maximum temperatures, ramp rate, cycle count, dwell time, local heating and mechanical restraint from the surrounding assembly.
Provide a drawing, ceramic and metal preferences, conductor count and layout, mounting or flange interface, voltage/current, vacuum or pressure requirement, helium leak-rate target, temperature range, plating, brazing zones, tolerances, quantity and any inspection or certification requirements.
Innovacera supports ceramic-to-metal programs from material and joint review through ceramic forming, metallization, plating, brazing, machining and inspection for prototype, replacement and repeat-production requirements.
Ceramic, metal and braze-alloy combinations are reviewed around thermal expansion, electrical loading, temperature and corrosion conditions.
Controlled metallization, nickel plating and vacuum brazing routes support strong, repeatable and hermetic ceramic-to-metal joints.
Pin count, conductor size, spacing, flange, housing, shielding and mounting features can be developed from customer drawings.
Dimensional inspection, visual checks, electrical tests and helium leak testing can be defined according to the program requirements.
Send the operating conditions and interface details so the engineering team can review material matching, conductor layout, metallization, brazing, mounting geometry and inspection requirements.
Submit Ceramic-to-Metal RFQSend drawings, operating conditions, material preference, tolerance targets and quantity. Innovacera can review standard catalog products or custom ceramic manufacturing paths.
