KBPF Series Glass Passivated Bridge Rectifiers Taiwan Semiconductor KBPF Series Glass Passivated Bridge Rectifiers are quad configured 400V to 1000V rectifiers ideal for for printed circuit boards. The KBPF Series Glass Passivated Bridge Rectifiers offer reliable low cost construction utilizing molded plastic technique. The Taiwan Semi KBPF Series Glass Passivated Bridge Rectifiers have a high surge current capability and are designed for general purpose use in AC/DC bridge full wave rectification for SMPS.