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Dielectric Performance Comparisons

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TEMPERATURE °C

DIELECTRIC CONSTANT @1kHz (TYP)-55-30025456585105125
POLYESTER3.4
POLYSTYRENE2.5
POLYCARBONATE2.9
POLYPROPYLENE2.2
PPS2.8
          
CAPACITANCE CHANGE % @1kHz (TYP)         
POLYESTER-6-3-1011.52510
POLYSTYRENE10.70.30-0.3-0.6-0.9
POLYCARBONATE-2.5-1.5-1.000.30.61.01.52.0
POLYPROPYLE2.01.20.60-0.4-1.6-2.5-3.5
PPS2.01.51.00-0.4-0.8-1.0-1.5-2.0
          
I.R. MEGOHM-MICROFARADS (WVDC2MIN. TYP)         
POLYESTER>105>105>1051054×1047×1031034×102500
POLYSTYRENE>106>106>106>1067×1055×1054×10400
POLYCARBONATE>106>106>1063×1052.5×1052×1051055×104103
POLYPROPYLENE>106>106>1065×1054×1053×105105104
PPS>105>105>105>1052×1041046×1034×1032×103
          
DISSIPATION FACTOR % @1kHz (TYP)         
POLYESTER @0.10 uF1.01.10.700.320.160.100.150.521.20
POLYSTYRENE @0.10 uF0.070.080.040.030.050.070.08
POLYCARBONATE @0.10 uF0.450.300.200.070.080.080.080.080.09
POLYPROPYLENE @0.10 uF0.020.020.020.020.020.020.020.02
PPS @0.10 uF0.060.050.040.030.030.030.030.050.15
          
DIELECTRIC ABSORBTION % TYPICAL         
POLYESTER0.30
POLYSTYRENE0.01
POLYCARBONATE0.10
POLYPROPYLENE0.02
PPS0.05
          
DC WORKING VOLTAGE VOLTS/MICRON (TYP)*         
POLYESTER50
POLYSTYRENE10
POLYCARBONATE35
POLYPROPYLENE65
PPS35
*These values are represented for standard metallization – advanced techniques yield 2x-5x for DC applications only         
 60Hz 120Hz 10kHz 100kHz 1MHz
DISSIPATION FACTOR % @25ºC (TYP)         
POLYESTER @0.10uF0.15 0.20 0.90 1.8 10
POLYSTYRENE @0.10uF0.01 0.01 0.01 0.01 0.04
POLYCARBONATE @0.10uF0.04 0.04 0.20 1.30 4.0
POLYPROPYLENE @0.10uF0.01 0.01 0.02 0.05 0.15
PPS @0.10uF0.02 0.02 0.20 1.9 4.0

Revision F
September 15, 2009