Xsis, specializes in the design and manufacturing of High Reliability Crystal Oscillators and Crystal Units for Military, Space, Industrial, Telecommunication and extremely high temperature down hole applications. Xsis is on the Qualified Products List for MIL-PRF-55310 (QPL) Military oscillators and MIL-PRF-3098 (QPL) Military crystal units.

Xsis is also a leading supplier of Rad-Hard Crystal Oscillators for Space Applications.