The TDK Group has recently introduced a new line of EPCOS MKP (metallized polypropylene) film capacitors (B3275*), which are ideal for AC applications with high ripple currents. The new series capacitors are rated for 250 VRMS, 275 VRMS, and 310 VRMS, with capacitance values ​​between 1μF and 70μF.
Its outstanding highlight is its excellent resistance to humidity and heat, which can be tested by high temperature and high humidity (THB) test (rated voltage, ambient temperature of 60 ° C, continuous humidity for 95 hours under continuous pressure for 1,000 hours).
The MKP (metallized polypropylene) film capacitors have a maximum operating temperature of 105 ° C: their enclosures and epoxy packages are UL 94 V-0 compliant. Depending on the product's capacitance and voltage rating, the capacitor's lead pitch is 27.5 mm, 37.5 mm, or 52.5 mm, with 37.5 mm and 52.5 mm pitch available in four-pin models.
At a temperature of 70 ° C and a voltage of 90% of the rated voltage, the expected life of the capacitor can be as long as 60,000 hours. This series is mainly used in converters, uninterruptible power supplies and output filters for variable speed drives.
main application
Converter output filter
ups
Controllable drive
Main features and advantages
Superior stability, withstands the harsh high temperature and high humidity (THB) test (rated voltage, ambient temperature 60 ° C,
Continuous pressurization for 1,000 hours with a relative humidity of 95%).
When the temperature is 70 ° C and the voltage is 90% of the rated voltage, the life expectancy can exceed 60,000 hours.
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