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The X8R dielectric will operate from -55°C to +150°C, with a maximum capacitance change ±15% (without applied voltage).
The devices are available in sizes 0805 to 2225, with voltage ranges from 25V to 3kV and capacitance values from 100pF to 2.2µF.
The capacitors have been developed by Knowles to meet demand from various applications in the automotive and industrial markets and in other electronic equipment exposed to high temperatures. The increased use of electronics in automotive “under the hood” applications has created demand for this product range.
The X8R range incorporates a specially formulated termination with a nickel barrier finish that has been designed to enhance the mechanical performance of these SMD chip capacitors in harsh environments typically present in automotive applications.
Capacitance Range
100pF to 2.2µF (0805 to 2225)
Temperature Coefficient of Capacitance (TCC)
±15% from -55°C to +150°C
Dissipation Factor (DF)
< 0.025
Nickel Barrier Tin Plated
Insulation Resistance (IR)
100G Ω or 1000secs (whichever is the less).
Dielectric Withstand Voltage (DWV)
2.5 x rated voltage for 5±1 seconds,
50mA charging current maximum.
Ageing Rate
1% per decade (typical)

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