High-Temperature Products manufactured by Frequency Management International provide High-Reliability solutions to meet all your high temperature crystal clock (XO, XOs) oscillator needs. Capable of operating in temperature ranges of -100°C to +300°C, these precision crystal clock oscillators are resistant to shock and vibration. Our High Temperature XOs support a wide range of supply voltages, frequency ranges, and come in industry standard packages or custom packaging. Applications include oil drilling, geothermal, commercial space, aircraft engine, aerospace & military, industrial instrumentation. We offer a wide variety of High-Temperature standard & custom quartz crystals and oscillators.