21POS HDR ST,HT, 3.5MM PITCH, TL 1.9MM Number of Positions: 21 Terminal Block Connector Type: Header Connector System: Wire-to-Board Centerline (Pitch): .138 in Centerline (Pitch): 3.5 mm PCB Terminal Block | 21 Header Wire-to-Board .138" | Part Number: 2-2342071-1 | Internal Number: 2-2342071-1 | .138" | TE Connectivity