This whitepaper examines two capacitor technologies – lead lanthanum zirconate titanate (PLZT) and strontium bismuth ferrum titanate (SBFT) dielectrics – that are designed to meet the high voltage, high temperature needs in the power electronics industry. A performance analysis was conducted to investigate the effects of DC voltage bias and AC current on capacitance value and temperature rise for multilayer ceramic capacitors (MLCCs) using SBFT, PLZT, and traditional X7R materials.