Passives

Film capacitors supply ultra-stable performance

11th November 2020
Mick Elliott

New Yorker Electronics has released Exxelia’s new 253P Series of Wrap-and-Fill High Temperature PTFE Film capacitors.

The PTFE capacitor is the most stable 200°C Film capacitor on the market with stability of less than 2.5% with capacitance from 0.22μF to 1μF under 250VDC to 800VDC.  

It offers the lowest loss characteristic of all film technologies less than 0.1% at extreme temperatures (200°C) with excellent life performance in operations.

The series offers great resistance to vibrations, shocks and to over voltage making it ideal for Oil & Gas applications as well as Defence and Civil Aviation.

Made in the USA, it boasts rugged, lightweight construction. 

These non-inductive wound PTFE metallised polymer film capacitors are available in voltage ranges from 250VDC to 800VDC and in capacitance ranges from 0.22μF to 1μF.

They 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 metallised Polymer film in a flame retardant tape wrap and high-temperature resin end fill.

Lead material for PTFE less than 600V PTFE uses insulated silver stranded copper wire and uses MIL-W-16878/4 (Type E) wire for those greater than 600V.

It is capable of withstanding a five-pound 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 (PS) capacitors are perfect as precision capacitors for time constant and filter applications in aeronautics, defence, rail, telecom and medical fields.

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