TDK Corporation presents a new series of EPCOS power capacitors for DC link applications designed for an operating temperature of up to +105°C.
In a release, TDK Corporation said that the components can operate at rated DC voltages from 700V to 1,300V (voltage de-rating necessary from +85°C). The ESR ranges from 1.0 mΩ to 2.7 mΩ, resulting in a current capability of up to 110A at +70°C, depending on the model (current derating necessary at higher temperatures). However, the film capacitors can repetitively withstand current peaks of up to 15.8 kA. At the rated voltage and +75°C, their service life is 120,000 hours – up to 35 per cent more than the standard version.
The cylindrical cases of the RoHS-compatible capacitors with diameters of 85 mm or 116 mm are aluminum and have a synthetic resin lid. The metalized polypropylene film is encapsulated with a dry epoxy resin. M6 screw terminals ensure a secure electrical connection and an M12 threaded bolt on the bottom side provides a secure mechanical connection.
Typical applications are DC link circuits in converters in renewable energies (photovoltaics, wind power), in rolling stock (train, subway, streetcar), and industrial drives.
Also read: TDK Presents New EPCOS Aluminum Electrolytic Capacitor Series
