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KEMET Evox Rifa PME271E and PME278 X1 EMI Suppression Capacitors
KEMET Evox Rifa PME271E and PME 278 metallized paper capacitors feature a high dielectric constant with excellent self-healing properties and transient handling capabilities. KEMET Evox Rifa metallized paper capacitors develop a high ionization level due to the impregnated dielectric material and maintain outstanding reliability in mains connected and other low frequency applications. KEMET Evox PME271E and PME278 capacitors are constructed of a multi-layer metallized paper dielectric encapsulated and impregnated in self-extinguishing material meeting the requirements of UL94V-O. Typical applications of the KEMET Evox Rifa PME271E and PME 278 capacitors are interference suppressors.
KEMET Evox Rifa PME271E and PME 278 metallized paper capacitors are classified as both X1 capacitors. Both capacitors meet the most stringent IEC humidity class, 56 days; while maintaining the highest possible safety regarding active and passive flammability.
Corona Resistance of KEMET Evox Rifa Impregnated Paper Capacitors
KEMET Evox Rifa impregnated capacitors feature a impregnation technique that eliminates pin-holes, thus also eliminating potential gas cells. This elimination of potential gas cells cannot entirely eliminate the possibility of weak points in the winding. These could result in a glow discharge, but the occurrence of such a discharge will eliminate the weak points and improve the insulation resistance thereafter due to a good self-healing process. In addition, laboratory tests and applications reports verify that KEMET Evox Rifa metallized paper capacitors can withstand very high levels of dU/dt, unique to metallized paper capacitors.
KEMET Evox Rifa PME271E and PME278 X1 Capacitors:
| Evox Rifa | PME271E | PME278 |
KEMET Evox Rifa EMI Suppression Capacitors |
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| International Standard: | IEC 60384-14; EN132400 | IEC 60384-14; EN132400 |
| Rated Voltage VAC: | 300 VAC | 440 VAC |
| Test Voltage (Factory test): | 2150 VDC | 2700 VDC |
| Max. Temp °C: | 110 | 110 |
| Capacitance range:μF | 0.01uF - 0.22uF | 0.001uF - 0.15uF |
| Capacitance Tolerances: | 20 ±%, 10 ±% | 20 ±% |
| Climatic Category (IEC 60068) | 40/110/56/B | 40/110/56/B |
| Pulse Rise Time, V/μs max. dU/dt in operation: | 400 - 1200 | 600 - 2000 |
| Lead Spacing, mm: | 15.2, 20.3, 22.5, 25.4 | 10.2, 15.2, 20.3, 22.5, 25.4 |
| Packaging: | Bulk in boxes, on tray or taped on reels | Bulk in boxes, on tray or taped on reels |
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KEMET Evox Rifa PME271E Capacitors
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KEMET Evox Rifa PME278 Capacitors
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