These TFM Series Headers from Samtec are Through Hole Terminal Strips with a 1.27 mm pitch., Current rating 2A. Operating temperature -55 to 125°C. TFM-1xx-01-L-D: 0.38 µm Gold plating on contact area and Matte Tin on tails. TFM-1xx-01-S-D-WT: 0.76 µm Gol