Mica and PTFE CapacitorsMica and PTFE capacitors are types of capacitors that use mica or polytetrafluoroethylene (PTFE) as the dielectric material. Mica is a naturally occurring mineral that is known for its stability and insulating properties, while PTFE is a synthetic fluoropolymer with excellent electrical and mechanical properties. Mica and PTFE capacitors are typically used in high-frequency and high-voltage applications, where their stability and low dielectric loss make them well-suited. They are also commonly used in military and aerospace applications, where their reliability and performance in extreme environments is important. Mica and PTFE capacitors are available in a variety of formats, including surface mount, through-hole, and radial leaded, to suit different application requirements.