Mica and PTFE Capacitors are in stock at Tenco Electronics. Mica is a group of natural minerals. Silver mica capacitors are capacitors which use mica as the dielectric. There are two types of mica capacitors: clamped mica capacitors and silver mica capacitors.Polytetrafluoroethylene film capacitors are made with a dielectric of the synthetic fluoropolymer polytetrafluoroethylene (PTFE), a hydrophobic solid fluorocarbon. They are manufactured both as metallized and as film/foil types, although poor adherence to the film makes metallization difficult. PTFE is often known by the DuPont trademark Teflon.Tenco offers inventory, pricing, & datasheets for Mica and PTFE Capacitors. To know more, please view our large section of Mica and PTFE Capacitors below.