Technical Ceramics

Feedthroughs

Morgan Technical Ceramics' ceramic feedthroughs are ceramic-to-metal assemblies used to transmit signals, high voltages, high currents, gases or fluids from outside a hermetically-sealed chamber to the inside.

Our ceramic feedthroughs are designed to provide electrical insulation and high mechanical strength. They are hermetic and maintain ultra-high levels of vacuum and joint integrity that is maintained at elevated temperatures, cryogenic conditions and in harsh environments.

Feedthroughs Classifications

Feedthroughs for low voltages (up to 12 kV) typically to convey a signal
High-voltage feedthroughs (20 to 100 kV)
Water-cooled feedthroughs and RF feedthroughs typically used in CO₂ lasers

Low and High Voltage Feedthroughs

Feedthroughs for low and high voltage can be designed to customer requirements. The method of interconnection (number of conducting pins) is flexible so can be designed as a single-pin, multi-pin or thermocouple feedthrough.

Water Cooled and RF Feedthroughs

Water cooled feedthroughs and RF feedthroughs are designed to operate efficiently in a variety of RF applications including CO₂ lasers, sputtering and plasma generation.

Materials Used in Feedthrough Assemblies

High purity alumina (95 to 99.5%) - Deranox™ 970, Sintox™ FF and Deranox™ 995
Glass and glass ceramic
Conventional brazing materials (moly manganese or active braze alloys (ABA^®)
Metals - OFHC copper, stainless steels, mild steels, monel, nickel alloys and titanium, gold coating (to enhance electrical conductivity)
Glazes for protection or to facilitate cleaning

Feedthrough Applications

Mass spectrometry, gas detection and high vacuum connectors
Microscopes (TEM, SEM)
Particle accelerators and nuclear detectors
X-ray equipment, scanners and imaging applications for the medical industry
Sensors, satellite propulsion and engine management for the aerospace industry
Optoelectronics and power tubes
Gas lasers
Deep sea repeaters and penetrators
Rechargeable batteries for energy storage