SMPS transformer orientation with respect to PCB: what's best for EMC?
what's best for EMC?


Copper tape around the transformer - I've done this to shield the windings on one job that was causing stray radiated emissions that could be picked up - the "straying" magnetic field was measurably attenuated by the tape. Not elegant as a bodge in an EMC lab but it went into production with a more elegant looking shield.