Automotive-grade DC link film capacitor delivers high temperature

Vishay Intertechnology, Inc. has introduced a new AEC-Q200 qualified DC-Link metallised polypropylene film capacitor designed for the harsh conditions of automotive, energy, and industrial applications. Offering high temperature operation up to +125C, the Vishay Roederstein MKP1848e delivers ripple current up to 44.5A and withstands temperature humidity bias (THB) in accordance with Grade III of IEC60384-16 ed.3 – 60C/93% R.H for 1344 hours at rated voltage.

With its high-temperature operation and resistance to high humidity, the capacitor is ideal for automotive power conversion applications, such as OBC, power trains, HVAC systems, e-compressors, and DC-DC converters. This next-generation DC-Link capacitor also meets the stringent requirements for energy and industrial power conversion applications, including fast chargers, solar inverters, rectifiers for hydrogen electrolysers, battery storage systems, motor drives, and UPS.

The device offers rated capacitance from 1µF to 140µF and low ESR down to 1mΩ, in rated voltages from 500VDC to 1300VDC. It provides 25% higher ripple current density than previous-generation solutions with the same volume, while its compact footprint and pitch options down to 22.5mm allow volume reductions up to 40% and 15%, respectively, at 500VDC and 900VDC.

To meet the standard high voltage levels of EV and PHEV, the MKP1848e withstands operating voltages from 250VDC to 800VDC at +125C for a limited time. It also features high thermal shock capabilities – withstanding 1000 temperature cycles from -40C to +125C, with a 30-minute dwell time for each temperature extreme. The capacitor is offered with customised terminals on request.