Mica substrates are a type of ceramic substrate that are made from muscovite or phlogopite mica, which are naturally occurring minerals. They are prized for their high thermal stability, low thermal expansion coefficient, and excellent electrical insulation properties. These properties make them ideal for use as substrates in high-temperature and high-power electronic applications, such as in the manufacturing of power electronics components. Mica substrates can be processed into thin sheets and are used as insulating layers between metal interconnects in electronic devices, as well as for thermal management in high-power electronic systems. The thin and flexible nature of mica substrates also makes them suitable for use in curved or flexible electronic devices.