Electrolytic capacitors get higher votlage ratings

20 February 2013 Passive Components

TDK has extended the range of EPCOS aluminium electrolytic capacitors with higher rated voltages.

For the screw terminal types in the new B43700* and B43720* series, the previous rated voltage of 550 V d.c. has been raised to 600 V. These capacitors cover a capacitance range from 1200 to 6800 μF and are designed for temperatures up to 85°C. They have dimensions of 64 x 106 mm to 91 x 221 mm (diameter x length), depending on the type.

The new B43541* snap-in series also has a rated voltage of 600 V d.c. (previously 550 V); its capacitance values range between 47 and 330 μF. This series is also designed for temperatures up to 85°C.

EPCOS aluminium electrolytic capacitors designed for temperatures up to 105°C now also offer a higher-rated voltage: for screw terminal types of the B43740* and B43760* series, this is now 500 V d.c. (previously 450 V). For the snap-in types of the new B43544* series, the previous voltage of 500 V d.c. has been raised to 550 V.

Thanks to these voltage increases, developers of industrial power supplies and frequency converters for drives, inverters for photovoltaic systems and converters for wind power plants now need fewer capacitors in series in the DC link.

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