The GBPC 12, 15, 25, 35 series are glass passivated bridge rectifiers manufactured by Fairchild Semiconductor Corporation. This series features an integrally molded heatsink that provides very low thermal resistance for maximum heat dissipation. The GBPC 12, 15, 25, 35 series has surge overload ratings from 300 amperes to 400 amperes. Additionally, this series has an isolated voltage of over 2500 volts and is UL certified with a UL number of E326243. The GBPC 12, 15, 25, 35 series has two different pin types: W and M. W indicates a wire lead structure, while M indicates a face to face terminal location.