Filter capacitor offers increased capacitance density in harsh environments

11-10-2023 | Rutronik | Passives

KEMET offers an enhanced version of the C4AF series with the new C4AF-F filter capacitors. Compared to the C4AF-T, it has smaller dimensions and an increased THB duration of 1500 hours of operation at a temperature of 85C and 85% RH. Another important improvement is the increased capacitance range from 62µF to 75µF generated by a higher capacitance density. The series has the typical boxed design. Typical applications are AC and harmonic filtering in UPS systems or motor drives. The capacitors are AEC-Q200 qualified and appropriate for automotive applications.

The AC filter series are metallised polypropylene film capacitors available in either two-pin or four-pin versions. The filter capacitors deliver a high ripple current capability of up to 40Arms with an average of 19Arms and are particularly suitable for filtering high ripple harmonics at the input of AC/DC converters and the output of DC/AC inverter systems. They have a low loss factor (DF) and an exceptional self-healing mechanism.

The film capacitors operate reliably in a temperature range from -55C to +105C. Their extraordinary stability under harsh conditions such as high temperatures and high frequencies and their long service life make them especially interesting for automotive applications, inverter systems or battery chargers.

typical applications include inverter systems, Motor drives, Battery chargers, AC and harmonic filtering, terminal/damping systems, PFC, and UPS systems.

By Seb Springall