Powersem psd 28 eco pac series 28a three phase bridge rectifiers pcb terminals powersem psd 28 08 a 800v 28a 3 phase bridge rectifier diode that comes in an eco pac package that utilises direct copper bonding to a ceramic base plate to give improved thermal and power management high power density in a small and light weight package makes this rectifier diode suitable for applications in dc power supplies and equipment powersem psd 28 08 three phase bridge rectifier dcb ceramic base plate 28a