what is the difference between LTC1386CS and LTC1386CS#PBF ? what meaning of #PBF?
The #PBF indicates the leadframe finish is lead-free.
Lead frame package finishes are backward compatible,meaning that the component can be soldered with SnPbsolder using SnPb soldering process. Lead frame packagesthat use a matte Sn plating on the leads which iscompatible with both Pb-free soldering alloys and SnPbsoldering alloy.
thanks very much for good answer!