786J General Purpose SMT Transformers Murata Power Solutions 786J Series General Purpose Pulse Transformers feature J-STD-020D reflow and toroidal construction. These surface-mount Murata Power Solutions 786J General Purpose Pulse Transformers can be used in-line coupling, matching, or isolating applications. They can also be used in small isolated power supplies as well as common-mode chokes in filtering applications. This comprehensive range of transformers from Murata Power Solutions is available in four winding configurations.