WIMA - Competence in Capacitors
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Film Capacitors – Made in Germany

RFI capacitors

  • Overview
  • MKP-X2
  • MKP-X1 R
  • MKP-Y2
  • MP3-X2
  • MP3-X1
  • MP 3-Y2/3R-Y2
  • Applications

Radio interference suppression capacitors must not only satisfy EMC requirements in suppressing outgoing interference from an application but they must also protect the application from incoming power surges. Hence careful selection of these components is essential.

The special feature of WIMA Polypropylene RFI capacitors are the high capacitance values at smaller case sizes compared to metallized paper capacitors, being available up to 10 µF with AC voltages of 300 VAC, 305 VAC and 440 VAC for class X1, X2 and Y2. Based on the dielectric used they are highly cost-effective.

WIMA metallized paper are neither actively nor passively flammable. The components are resin impregnated under vacuum and encapsulated with self-extinguishing cast resin. Thanks to the good oxidation behaviour of the paper dielectric, they have outstanding self-healing properties even with high energy pulses. The capacitors are specified for temperatures up to 110° C and are available for class X1, X2 and Y2 applications.

Class X capacitors are connected between phase and neutral or phase and phase conductors. Class Y capacitors have an increased degree of electrical and mechanical safety and are connected, for example, between phase conductors and earthed casing, and thus by-pass operating insulation.

The specified rated AC voltage takes into account a rise of the mains voltage of up to 10% above the nominal value, in accordance with IEC 60384-14.

RFI-capacitors
in accordance with IEC 60384-14
MKP-X2
MKP-X1 R
MKP-Y2
MP 3-X2
MP 3-X1
MP 3-Y2/3R-Y2
Dielectric Polypropylene film Paper, resin impregnated
Test category in accordance with IEC 55/105/56 55/105/56 55/105/56 40/110/56/C 40/110/56/C 40/110/56/C (MP 3-Y2)
40/110/56/B (MP-3R-Y2)
Temperature range -55°C to +105°C -55°C to +105°C -55°C to +105°C -40°C to +110°C -40°C to +110°C -40°C to +110°C
Dissipat. factor tanδ at 1 kHz and +20°C < 18 x 10-4
> 0.1µF: < 20 x 10-4
< 18 x 10-4
> 0.1µF: < 20 x 10-4
>1µF: < 30 x 10-4
< 18 x 10-4
> 0.1µF:< 20 x 10-4
< 13 x 10-3 < 13 x 10-3 < 13 x 10-3
Insulation resistance at +20°C > 1.5 x 104 MΩ
>0.33µF:>5000sec
> 1.5 x 104 MΩ
>0.33µF:>5000sec
> 1.5 x 104 MΩ
>0.33µF:>5000sec
>12 x 103 MΩ > 12 x 103 MΩ > 12 x 103 MΩ
Voltage ranges VAC
Capacitances
305 440 300 250 275 300 440 500 250 300
1000 pF 7.5 10 10 10 10 10 10 15
1500 pF
2200 pF
3300 pF
4700 pF
6800 pF 15 15 15 15 15 15
0.01 µF 15
0.015 µF 15
0.022 µF 22.5
0.033 µF
0.047 µF
0.068 µF 10
0.1 µF 22.5 22.5 27.5
0.15 µF 15 22.5 22.5
0.22 µF
0.33 µF 27.5
0.47 µF 22.5 27.5
0.68 µF
1.0 µF
1.5 µF 27.5
2.2 µF 37.5
3.3 µF
4.7 µF
6.8 µF 37.5
10 µF
Capacitance tolerances ±20%, ±10%, ±5% ±20%, ±10%, ±5% ±20%, ±10%, ±5% ±20% ±20% ±20%
MKP-X2
MKP-X1 R
MKP-Y2
MP 3-X2
MP 3-X1
MP 3-Y2/3R-Y2
The values of the WIMA MKP-X2 R range according to main catalogue 2015 are still available on request.
The values in the tables refer to the smallest PCM of the respective capacitance value. For larger PCMs please refer to the detailed data sheets of the particular series.

About us

As the world's leading manufacturer, we develop and manufacture high-quality film capacitors for professional use in all areas of electronics.

As privately owned company since 1948 we are producing exclusively in Germany. As specialist in film capacitors our goal is to achieve customer satisfaction in terms of quality, innovation and service.

Our strength lies in the production and design not only of standard but also of customized products requiring experience and highly developed expertise. Solutions can therefore be offered to all customer needs.

Contact

WIMA GmbH & Co. KG
Besselstr. 2 – 4
68219 Mannheim

Phone: +49 621 86295-0
Fax: +49 621 86295-48

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