Component Management

Stabilise power converters in charging and photovoltaic systems

30th March 2023
Kristian McCann

Würth Elektronik has announced a new series of film capacitors specially designed for DC-Link applications. The WCAP-FTDB series components can be used in the voltage range from 500 to 1200V and are characterised by high ripple current capability. 

This makes them particularly attractive for use in AC/DC and DC/DC converters for charging systems and power electronics in e-mobility or in renewable energy solutions. The 24-model product family offers capacitance values from 1µF to 75µF.

The capacitors for stabilising DC-Link voltage are very robust. Thanks to their metallised polypropylene film design, they have self-healing properties whereby short circuits “burn out” their own cause, hence restoring an intact dielectric. Significantly more durable than other capacitor types, the WCAP-FTDB series is suitable for applications with long maintenance cycles like wind turbines. Würth Elektronik provides a boxed THT package with pitch of 27.5mm, 37.5mm and 52.5mm for this component family. The operating temperature of the film capacitors extends from -40°C to 105°C, the respective maximum voltage values attained are up to 85°C.

Like all products in the Electronic Components 2022/2023 catalogue, the WCAP-FTDB DC-Link capacitors are now available without a minimum order quantity. Würth Elektronik provides free samples and offers a wide range of characteristic measurement data of the capacitors in the REDEXPERT online tool. This facilitates the selection of suitable components.

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