The demand for improved energy efficiency and alternative energy sources has called for an accelerated introduction of products such as hybrid electric vehicles, solar converters, and wind generators. A DC to AC inverter is a key component in all of these applications. The inverters require filter and DC link capacitors with higher operating voltages and ripple current capability to support the need of increasing power demand. Other important capacitor parameters include low inductance to limit the switching transient voltages, high frequency capability, and expanded range of working temperature, long expected life time, low dissipation factor and ESR, high stability vs. time of the capacitance value, the ability to withstand high peak voltages, improved mechanical strength, low weight, and packaging flexibility. The film capacitor comes closest to satisfying these requirements.