STRW

original SQT7011K = STR-W6053S.   STRW6053S TO220F-6PIN   ...

IC STRW 5753...

STRW6052S  TO220F-6  original ...

IC POWER STRW6553A The STR-W6553A is a quasi-resonant regulator specifically designed to satisfy the requirements for increased integration and reliability in switch-mode power supplies. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET. The regulator exhibi...