Kyocera Corporation (President: Hideo Tanimoto; "Kyocera") is pleased to announce a groundbreaking advancement in hydrogen technology: the development of two innovative products in collaboration with the Japan Aerospace Exploration Agency (JAXA). These include a 100A-compatible "Current Feedthrough Terminal," delivering exceptional durability and hermeticity for high-current liquid hydrogen environments, and the "MS-8 Pin Terminal" Hermetic Seal Connector, engineered to handle up to 110A for the entire connector.
These two products unlock new possibilities for equipment requiring the efficient input and output of high electrical power－from liquid hydrogen storage and transport systems to booster pumps and generators－paving the way for safer and more reliable hydrogen infrastructure.
This announcement builds on Kyocera's successful track record with JAXA, following the joint development of the "MS-10 Pin Terminal" Hermetic Seal Connector for measurement and control applications－first unveiled in March 2024. The new products have successfully passed rigorous demonstration tests for durability and hermeticity at JAXA's Noshiro Rocket Testing Center, underscoring their exceptional reliability. Notably, these are the world's first※1 high-current-compatible Current Feedthrough Terminals and "MS-8 Pin Terminal" Hermetic Seal Connectors suitable for use in liquid hydrogen environments.
※1 Based on Kyocera's research as of December 2025 for high-current feedthrough terminals and hermetic seal connectors for liquid hydrogen environments.
High-Current Feedthrough Terminal
100A compatible; Size: Ø16mm OD (metal housing) x 94mm length
■ Development Background
In pursuit of Japan's ambitious goal of achieving carbon neutrality by 2050, the government introduced the "Basic Hydrogen Strategy" in 2017 and, in a bold move, set a revised target in June 2023 to introduce 12 million tons of hydrogen annually by 2040.
Liquid hydrogen is emerging as a key solution for the transportation and storage of hydrogen, thanks to its ability to reduce the gas volume to just 1/800 of its original size. Yet, its ultra-cryogenic temperature of -253°C demands components of exceptional durability and hermeticity to withstand these extreme conditions－making innovation in this field more crucial than ever.
■ Joint Development of Liquid Hydrogen-Compatible Current Feedthrough Terminals by Kyocera and JAXA
Since 2016, Kyocera has partnered with Professor Hiroaki Kobayashi of JAXA to pioneer ceramic hermetic sealing technology for liquid hydrogen. By bringing together Kyocera's expertise in advanced metal-ceramic bonding technology for ultra-high vacuum terminals and JAXA's world-class evaluation capabilities, the companies achieved a major milestone in 2024: commercializing the "MS-10 Pin Terminal" hermetic seal connector for measurement and control applications－the world's first※1 to prove its reliability through demonstration tests with liquid hydrogen.
Subsequently, recognizing an increasing demand for current feedthrough terminals capable of handling higher currents in space rocket and industrial applications, Kyocera and JAXA have now developed the new high-current-compatible Current Feedthrough Terminal and the "MS-8 Pin Terminal" hermetic seal connector.
"MS-10 Pin Terminal" for Measurement and Control Applications
Ø34mm OD (metal housing) x 72.5mm length
