MRO specializes in quick delivery of high power semiconductors for maintenance, repair and operations requirements. They stock products but, it's their service that sells. MRO is your "Power Train" for diodes, SCR's and power modules.Your source for over 15,000 obsolete, special, proprietary and other hard-to-find diodes, SCR's, modules and bridges produced by prime power semiconductor manufacturers in the U.S., Europe and the Far East.