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Film Capacitors

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Low loss and high insulation characteristics

Film capacitors use plastic film as the dielectric material which have low loss and high insulation characteristics.

Rubycon’s film capacitors are ideal for high-frequency electronic equipment achieving high temperature/humidity resistance from our unique technology. They are widely used in inverter, switching power supply circuits of audio-visual (AV) equipment, information, communication, RF, lighting as well as automotive equipment in harsh operating environments.

High Current

The high current series, which achieves low ESR by increasing the area of internally connected electrodes, achieves an increase in allowable current of about 30% in the same volume.

High heat resistance

We have newly released the MPT series, which is compatible with 125℃, as a high heat-resistant product mainly for automotive applications.

Low buzzing noise

The MPT series is designed to reduce the buzzing noise generated by film capacitors, which has become an issue as power output increases.

Power Film Capacitors

We have a lineup of custom-made film capacitors for power applications that require high capacitance and high current, such as industrial equipment and automotive applications.

Series List

Film Capacitors

Type Series Details Search Features General purpose Miniaturized High Ripple heat-resistant High Voltage AC Rated voltage CR-Network Rated voltage(V) Capacitance(μF) Category Temperature Range Series
Metallized Polypropylene Film Capacitors MPB



DC250~630 0.01~4.7 -40~+105℃ MPB



DC450~800 0.1~4.7 -40~+105℃ (+85℃) MPK


Ultra Miniaturized

DC450~630 0.1~4.7 -40~+85℃ MPN


High Current

DC100~800 0.047~22 -40~+105℃ MPH


High Voltage

0.001~0.56 -40~+105℃ MPE



AC125~275 0.01~1 -40~+85℃ MPKA


High Ripple Current,
Low Buzz

DC450~2,000 0.01~33 -40~+105℃ (+85℃) PCK


Ultra High Voltage

DC10,000~20,000 0.027~0.68 -40~+85℃ MPF
new MPT


High heat resistance

DC630 1~6.8 -40~+125℃ new MPT
new MPY


High Ripple Current

DC450 0.47~10 -40~+105℃ new MPY
Metallized Polyester Film Capacitors MMB



DC100~630 0.01~10 -40~+105℃ (+85℃) MMB



DC250~630 0.056~10 -40~+105℃ (+85℃) MMG



AC125~250 0.01~1 -40~+85℃ MMBA
CR-Surge absober MCRA-DP


CR-Surge absober

AC125~250 C: 0.033~0.1
R: 47~120Ω
-25~+85℃ MCRA-DP
Power Film Capacitors MPC


High Ripple Current

DC700~1,600 0.1~2.2 -40~+85℃ MPC


For AC line

AC220~500 1~100 -25~+70℃ MPCA



DC250~800 50~800 -40~+105℃ HVC


Stud Mounting

DC1,100~1,300 200~1,600 -20~+70℃ MPX
Polyester Film Capacitors F2D



DC50~200 0.00047~0.47 -40~+105℃ F2D
Polypropylene Film Capacitors P2S


Low D.F

DC100~250 0.00022~0.1 -25~+85℃ (+70℃) P2S
Polyphenylene Sulfide Film Capacitors H2D


High heat resistance

DC50~100 0.00047~0.47 -55~+125℃ H2D

Series Chart

Technical Note


Please let me know the service life of film capacitor.

The film capacitor will never wear out or fail if it is used within the rated voltage range having been normally set up.
However, this does not apply to the cases when the voltage exceeding the rated voltage is applied on it and when it is used in the high temperature/high humidity environment. In such cases, it is necessary to examine the details as to the propriety of its use and service life under respective conditions.

How much current can flow through the film capacitor?

Please refer to the allowable current data for frequency.
However, this data refers to the sine wave current. The waveform in the equipment in actual use frequently contains a considerably many high harmonic components. Even in slightly excess of the allowable values given in said data, self-heating of capacitor may fall below the allowable values in many cases. Finally, it is recommended to check and confirm the self-heating at the actual equipment.

Why the is derating of high frequency voltage necessary?

The high frequency voltage is to be limited by the allowable current value for high frequency as mentioned above. However, this voltage refers strictly to the AC components. In case when DC voltage is overlapped on it, the peak voltage should never exceed the DC rated voltage.
Moreover, in case of the waveforms different from the sine wave, it is also necessary to check and confirm whether the following conditions are satisfied.
(1) Current conditions are satisfied (less than the allowable current).
(2) In case when the pulse rated voltage is specified, Up-p voltage is lower than the rated voltage.