Dielectric Characteristics

Wright Capacitors Inc. has a wide selection of dielectrics to suit your application whether it be for pulse power / detonation, high temperature, high voltage or high frequency. Basic electrical characteristics of our main dielectric types are shown below.

Class I Temperature Coefficients

Temperature Coefficient

COG/NPO (N)

Material: COG/NPO
Operation Temperature Range: -55°C to 125°C.
Temperature Coefficient: ± 30ppm/°C.
Dissipation Factor: 0.1% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 0% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

COG/NPO (N) Up to 250°C

Material: COG/NPO Up to 250°C
Operation Temperature Range: -55°C to 250°C.
Temperature Coefficient: ± 30ppm/°C.
Dissipation Factor: 0.1% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
at 250°C > 1GΩ or 10MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 0% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

Fuze Cap Temperature Coefficients

Temperature Coefficient

N2200 (R) Pulse Energy/Fuze Capacitor

Material: N2200 (R) Pulse Energy/Fuze Capacitor
Operation Temperature Range: -55°C to 125°C.
Temperature Coefficient: -2200ppm/°C typical, tolerance per EIA-198
Dissipation Factor: 0.15% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
x 150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 0% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

N2200 (R) Hi TEMP 200°C

Material: N2200 (R) Hi TEMP 200°C
Operation Temperature Range: -55°C to 200°C.
Temperature Coefficient: -2200ppm/°C typical, tolerance per EIA-198
Dissipation Factor: 0.15% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
at 200°C >1GΩ or 10MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 0% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

Class II Temperature Coefficients

Temperature Coefficient

X7R (X)

Material: X7R (BR)
Operation Temperature Range: -55°C to 125°C.
Temperature Coefficient: ±15%
Dissipation Factor: 2.5% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: <2% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

X7R (X)

Material: X7R (BX)
Temperature Coefficient: ±15%
Voltage Coefficient: -25% Max.
Operation Temperature Range: -55°C to 125°C.
Dissipation Factor: 2.5% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: <2% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

High Temp X7R (X) Class II (200°C)

Material: High Temp X7R Class II (200°C)
Operation Temperature Range: -55°C to 200°C.
Temperature Coefficient: +15% -45% Max
Cap Drop at 200°C: -45% Max
Dissipation Factor: 2.5% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
at 200°C >1GΩ or 10MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: <2% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

Y5V Temperature Coefficients

Temperature Coefficient

Y5V (Y)

Material: Y5V
Operation Temperature Range: -30°C to 85°C.
Temperature Coefficient: +22% -82%
Dissipation Factor: 4% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts >250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 7% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

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