What is Focussed Ion Beam Fix?
A FIB Fix (Focussed Ion Beam) Fix is simply performed onto a terminated chip. FIB is a somewhat exotic process where a particle beam is capable to make and break connections onto a completed die. FIB fixes are completed on individual chips and would only be made as a last resort to repair an or else defective prototype chip. Masks are not influenced as this is the final chip which is intrusively repaired.