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Kemet X and Y EMI Suppressors

A capacitor for Electromagnetic Interference Suppression must be approved by a relevant authority either as a electromagnetic interference capacitor or as part of a complete unit of equipment. The standards for EMI capacitors are EN/IEC 60384-14:2005. The capacitors are subdivided into two groups, X and Y.

X capacitors are for use in positions where a failure of the capacitor would not expose anybody to danger of electric shock.

  • ≤2.5kV
  • IEC 60664 installation category II
  • general application purpose

Y capacitors are for use in positions where a failure of the capacitor could expose somebody to dangerous electric shock.

  • Y1 - Double insulation or reinforced insulation, rated voltage ≤500 V, peak impulse voltage before endurance test 8.0kV
  • Y2 - Basic insulation or supplementary insulation, rated voltage ≥150 V, ≤300V, peak impulse voltage before endurance test 5.0kV

Note: A short circuit of a Y capacitor, or a too high capacitance, is hazardous if the earth line should be open circuit or connected to earth through a too high resistance. The National Approval Boards stipulate the maximum permitted current towards earth for different applications. A frequent current value for household equipment and portable tools is ≤0.5mA. For more information, read the technical/application data from the printed catalog.

View other KEMET Film Capacitor Series


X Capacitors
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Series
Datasheets Operating Voltage Class Max Temp ºC C-value Min. C-value Max. Dielectric Self healing? Comments
PME271M
275 VAC X2 110 0.001µF 0.6µF Impreg. paper Yes Excellent flame resistance
PHE840M
275/280 VAC
X2 105 0.01µF 10µF Polyprop. Yes Small size, cost effective, meets agency flammability requirements
PME264N
660 VAC
X2 85 0.001µF 0.1µF Impreg. paper
Yes Excellent flame resistance
R46
275/300 VAC
X2 105 0.01µF 10µF Polyprop. Yes Small size, cost effective, meets agency flammability requirements
PME271E 300 VAC
X1
110 0.1µF 0.22µF Metallized paper
Yes
For worldwide use as an electromagnetic interference suppressor
PHE820E/M 275 VAC
X2 100
0.01µF 2.2µF Metallized polyester
-
Interference suppressor in X2 and across-the-line apps
R46+R 275/300 VAC
X2
110
0.22µF 10µF Metallized polyprop. film
-
With internal discharge resistor, for EMI interference suppression
PME278 440 VAC
X1
110
0.01µF 0.15µF Multilayer metallized paper
Yes
Encapsulated and impregnated in self-extinguishing material meeting UL 94V-0
R47 440 VAC
X2
110
4700pF
2.2µF Polyprop. film
Yes
For interference suppression and across-the-line apps
PHE840E 300 VAC
X2
105 0.01µF 10 µF Metallized polyprop.
-
Small dimensions including low profile
PHE841 330 VAC
X1
100 0.01µF 2.2µF Metallized polyprop.
-
Encapsulated in self-extinguishing material meeting UL 94 V-0
PHE844 440/480 VAC
X1
105 0.1µF 2.2µF Metallized polyprop.
-
For worldwide use as electromagnetic interference suppessors
PHE845 760/600 VAC
X1
105
0.01µF 1.0µF Metallized polyprop.
-
For worldwide use as electromagnetic interference suppessors
Y Capacitors
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Series
Datasheets
Operating Voltage
Class Max Temp ºC
C-value Min.
C-value Max.
Dielectric
Self healing?
Comments
PME271Y
250 VAC
Y2 100 0.001µF 0.1µF Impreg. paper
Yes Excellent flame resistance and high self healing voltage
PME271YA-3
300 VAC
Y2 115 0.001µF 0.15µF Impreg. paper
Yes Excellent flame resistance and high self healing voltage
PHE850 300/480 VAC
Y2 110 0.01µF 1.0µF Polyprop. Yes Cost effective, meets agency flammability requirements
PME295
440/480 VAC
Y1 115 470pF 4700pF Impreg. paper
Yes Excellent flame resistance and high self healing voltage
R41 300/480 VAC Y2 110 0.01µF 1.0µF Polyprop. Yes Cost effective, meets agency flammability requirements
SMP253 250 VAC
Y2 100 0.001uF 0.0047uF Metallized Paper
Yes For worldwide use as electromagnetic interference suppressor (EMI), line-to-earth


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  • Passive Components|Capacitors