PEx - Metallized Polyester

* click here for a certification of compliance

ERSE’s PEx Metallized Polyester Film Capacitors are an excellent choice for a wide range of electrical applications. One of the most important features of a quality film capacitor is the purity of the film. Every PEx capacitor is manufactured with high purity Dupont film, to insure a higher level of performance when compared to our competitors. Most of our competitors are using a low grade of Chinese film in their metallized polyester caps. Great care is taken during the manufacturing process to insure tight winding of the foil to prevent microphonic distortion and tight tolerances. These PEx metallized polyester film caps are perfect for crossover networks and are a higher quality alternative to non polar caps.

*Most ERSE PEx Metallized Polyester Film Capacitors are Lead Free (RoHS Compliant) and available in many stocked and un-stocked values. View the parts list for more information.

  • High Purity Dupont Film
  • Smaller Dimensions
  • Self-Healing Properties
  • Excellent Frequency Characteristics
  • Wide Capacitance Range
  • High Reliability
  • Excellent handling of high current audio pulses
  • Most Parts are RoHS Compliant
  • Tolerance: ± 5% centered on nominal value
  • Dissipation Factor: 0.8% max at 1kHz (see details)
  • Temperature Range: -25°C to 85°C
  • Insulation Resistance:
    I.R. >= 15,000M Ω (C < 0.33µF)
    I.R. <= 5,000/C Ω (C < 0.33µF)

  erseaudio logo Mundorf Jantzen Solen Intertechnik Result
Trade name XQ coils BL140 Perfect Lay Air Coils CU 1.4mm  
Wheeler formula Yes No Yes No No Higher DCR and lower Q factor
Varnish Impregnated Yes Yes Yes No No Varnish impregnated coils offer the lowest possible microfonic distortion
Hysteresis tension devices Yes No No No No Inconsistent winding factor and DCR’s
Precision Orthocyclic tooling matched to .001” Yes No No No No Improved matching of coils. Lower inductive tolerance.
Computerized layer winding Yes No No No No Improved layering and lower DCR.
Purity Guarantee
Click here for details		 Yes No No No No Unknown purity and conductivity can result in smeared sound

Tolerance

 1% 3% 1% 3% 3% Lower tolerances can assure your coil is closer to the advertised value
1.0mh #14AWG coil DCR CLAIMED 0.208 Ω 0.30 Ω 0.21 Ω NA 0.28 Ω Higher DCRs result in increased power loss and reduced performance.
1.0mh #14AWG coil DCR MEASURED 0.211 Ω 0.306 Ω 0.215 Ω NA 0.293 Ω Higher DCRs result in increased power loss and reduced performance.
  erseaudio logo Mundorf Jantzen Solen Intertechnik Result
Trade name EQ coils L100 Air coils NA CU 1.0mm  
Wheeler formula Yes No No NA No Higher DCR and lower Q factor
Bonded coil Yes Yes
optional		 Yes NA No Bonded coils offer lower microphonic distortion
Hysteresis tension devices Yes No No NA No Inconsistent winding factor and DCR’s
Precision Orthocyclic tooling matched to .001” Yes No No NA No Improved matching of coils. Lower inductive tolerance.
Computerized Orthocyclic layer winding Yes No No NA No Improved layering and lower DCR.
Purity Guarantee
Click here for details		 Yes No No NA No Unknown purity and conductivity can result in smeared sound

Tolerance

 2% 3% 3% NA 3% Lower tolerances can assure your coil is closer to the advertised value
1.0mh #18AWG coil DCR CLAIMED 0.471 Ω 0.49 Ω 0.55 Ω NA 0.60 Ω Higher DCRs result in increased power loss and reduced performance.
1.0mh #18AWG coil DCR MEASURED 0.482 Ω 0.531 Ω 0.572 Ω NA 0.581 Ω Higher DCRs result in increased power loss and reduced performance.