KEMET’s internationally recognized safety certified capacitors are specifically developed for interference suppression AC line filtering applications. These capacitors are designed to keep potentially disruptive or damaging line transients and EMI out of susceptible equipment. They are also an ideal solution for suppressing line disturbances at the source.
All safety standard recognized capacitors are classified as either X and/or Y capacitors. Class X capacitors are primarily used in line-to line (across-the-line) applications. In this application, there is no danger of electric shock to humans should the capacitor fail, but could result in a risk of fire. The Class Y capacitor is primarily used in line-to-ground (line bypass) applications. In this application, failure of the capacitor could lead to danger of electric shock.
Product Selection
Ceramic

KEMET’s Ceramic surface mount (SMD) safety certified capacitors are specifically designed for interference-suppression AC line filtering applications. When comparing to radial leaded disc capacitors, the CAS surface mount form factor provides engineers the ability to miniaturize their designs with a higher density solution. Having internationally recognized safety certifications, these capacitors are well-suited for applications that require keeping potentially disruptive or damaging line transients and EMI out of susceptible equipment. They are also an ideal solution when needing to suppress line disturbances at the source.
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Ceramic Disc
KEMET’s 900 encapsulated radial leaded ceramic disc capacitors are specifically designed for interference-suppression AC line filtering applications. Having internationally recognized safety certifications, these capacitors are well-suited for applications that require keeping potentially disruptive or damaging line transients and EMI out of susceptible equipment. They are also an ideal solution when needing to suppress line disturbances at the source.
Safety Certified Capacitors are classified as either X and/or Y capacitors. Class X capacitors are primarily used in line-to-line (across-the-line) applications. In this application, there is no danger of electric shock to humans should the capacitor fail, but could result in a risk of fire. The class Y capacitor is primarily used in line-to-ground (line by-pass) applications. In this application, failure of the capacitor could lead to danger of electric shock.
Benefits
• Safety standard recognized (IEC 60384–14)
• Reliable operation up to 125°C
• Class X1/Y2
• 5.0 mm, 7.5 mm, and 10 mm lead spacing
• Lead (Pb)-free and RoHS Compliant
• Halogen-free
• Capacitance offerings ranging from 10 pF up to 10 nF
• Available capacitance tolerances of ±5%, ±10%, and ±20%
• High reliability
• Preformed (crimped) or straight lead configurations
• Non-polar device, minimizing installation concerns
• Encapsulation meets flammability standard UL 94 V–0
Applications
Typical applications include:
• Line-to-line (Class X) filtering
• Line-to-ground (Class Y) filtering
• Antenna coupling
• Primary and secondary coupling (switching power supplies)
• Line disturbances suppression (motors and motor controls, relays, switching power supplies, and inverters)
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Film
Product Series | Applications | Benefits |
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![]() R52 MKP X2, Miniaturized |
For worldwide use in electromagnetic interference (EMI) suppression in across-the-line applications that require X2 safety classification. Typical applications include connection in series with the mains, capacitive power supplies and energy meters, with special emphasis in automotive applications for severe ambient conditions. |
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![]() R41T MKP Y2/X1, High Temperature |
For use in electromagnetic interference (EMI) suppression filter in “line-to-ground” and “across-the-line” applications, requiring Y2/X1 safety classification. |
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![]() F862-V054 MKP X2, High Current |
Typical applications include connection in series with the mains, capacitive power supplies and energy meters, with special emphasis in automotive applications for severe ambient conditions. |
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![]() SMP253 Y2, SMD Metallized Paper |
For worldwide use as an electromagnetic interference suppressor in all Y2 applications, line-to-earth. |
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