New Yorker Electronics has announced the release of Exxelia’s new 253P series of wrap-and-fill high temperature polytetrafluoroethylene (PTFE) film capacitors. The PTFE device is the most stable 200° C film capacitor on the market with stability of less than 2.5% and capacitance from 0.22 μF to 1 μF under 250 V DC to 800 V DC.
The Exxelia 253P Series offers the lowest loss characteristic of all film technologies: less than 0.1% at extreme temperatures (200° C) with excellent life performance in operations. Its great resistance to vibrations, shocks and to over voltage make it ideal for oil and gas applications as well as defense and civil aviation. The 
Source: New Yorker Electronicscapacitors come in standard tolerances of ±10% and ±5% and operate at temperatures between -55° C and 200° C.
These wrap-and-fill capacitors are constructed with non-inductive wound PTFE metallized polymer film in a flame retardant tape wrap and high-temperature resin end fill. Lead material for PTFE less than 600 V PTFE uses insulated silver stranded copper wire and uses MIL-W-16878/4 (Type E) wire for those greater than 600 V. It is capable of withstanding a 5 lb pull force on lead axis.
PTFE is the only film able to preserve its properties beginning from cryogenic temperature up to 200° C, making it suitable for high-temperature sampler-blocker and stopping sampler applications. Polystyrene capacitors are perfect as precision capacitors for time constant and filter applications in aeronautics, defense, rail, telecom and medical fields.
