Resistors

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ERSE’s cement wire wound resistors are constructed for applications requiring minimal board space, low heat dissipation, and low cost. These audio grade resistors are packaged in a nonflammable cement casing and with an inorganic potting mix. This combination provides resistance to the elements and high thermal conductivity. With features like High Surge Capabilities and small sizes, the ERSE cements wire wound resistor is perfect for all high power applications.

ERSE resistors are available in many stocked and un-stocked values. View parts list for more information!

Most Wire Wound Resistors are lead free (RoHS Compliant)

  • Small Dimensions
  • Complete Isolated Construction
  • Surge Overload Capabilities
  • Resistant to Moisture
  • Superior Heat Dissipation
  • 10, and 25 watt units
  • Wide Resistance Range
  • RoHS Compliant
  • Tolerance: ± 5% centered on nominal value
  • Temperature Coefficient:
    Under 9.9Ω ±50PPM/°C
    Over 10.0Ω ±30PPM/°C
  • Temperature Range:
    -55°C to 275°C
  • Max Working Voltage:
    750 Vac for 1 Min.
  • Incombustibility:
    100W for 5 Minutes, No Flame
  • Short Term Over Load:
    ±2%, 100W for 5 Seconds
  • Rate Load:
    ±1%, 10W for 30 Minutes
  • Load Life:
    ±5%, 70°C On-Off Cycle 1,000 Hours

  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.