Thermal Characterization and Time-dependent-dielectric Breakdown Study of Polyimide Thin Film Capacitors

Polyimides have recently raised a huge interest as versatile dielectrics for galvanic isolation devices. In this study, we explored calorimetry and thermogravimetric properties of two commercial polyimides with different curing ranges. The electrical characterization with time-dependent-dielectric-breakdown tests at several voltages and frequencies provided lifetime behavior and completed materials comparison.