can anyone post a picture of BS250? I don't quite understand how its pins get mis-placed?
Most of the time chip vendor will put a clear mark to identify the pins.
Or the chip could never go wrong because of the special made shape. something like a SOT23 package, it would be very hard to go wrong since there is only one pin on one side and two pins on the other side.
So far, I have never hear anything like this happed on the DIY kits we designed, even for the most popular CB0703 (PICkit2 DIY) board.