Samtec SFM Tiger Eye Series 1.27mm SMT PCB Board-to-Board SocketsSFM Series 1.27mm dual row SMT PCB board-to-board socket strip connectors with rugged and reliable gold plated Tiger Eye contacts that have a multi-finger design for redundant points of contact. These SFM Tiger Eye series 1.27mm board-to-board SMT sockets have a body height of 4.7 mm and mate with the following:TFM Series headers see stock number 481-4667 typicallyFTS Series micro terminal strips see stock number 481-4702 typicallyFTSH Series micro headers see stock number 767-6774 typicallyNoteSFM-1xx-xx-S-D-A have 0.75 μm gold plating and alignment pinsSFM-1xx-xx-L-D have 0.25 μm gold plating