KEL Corporation 8900 Series Straight Through Hole Mount PCB Socket, 40-Contact, 2-Row, 2.54mm Pitch, Solder Termination

8900 series PCB mount board to board socket connectors with a 1.27mm pitch, low profile design and low insertion and withdrawal force. These 8900 series 1.27 mm PCB sockets have a single-point spring contact design that assures a reliable electrical connection. The housings of these 8900 series board to board socket connectors are designed to prevent misinsertion and feature a guide mechanism to aid accurate mating. The connector produces an audible click to indicate when mating is complete. PCB hooks are featured on these 8900 PCB sockets to ensure a secure connection to the PCB during the soldering process. These 8900 series board to board PCB sockets support stacking, horizontal and vertical board to board applications and have a range of stacking heights.
8901-xxx-177S-A-F have a stacked height of 7 mm and 9 mm
8901-xxx-177S-B-F have a stacked height of 8 mm and 10 mm
8901-xxx-177S-D-F have a stacked height of 10 mm and 12 mm
These 8900 series PCB mount board to board socket connectors mate with the 8900 series PCB mount board to board header connectors

Low profile design
Low insertion and withdrawal force
One point spring contact design for a reliable electrical connection
Guide mechanism to aid accurate mating
Audible click indicates complete mating
PCB boardlocks for secure connection to PCB
Supports stacking, vertical and horizontal board to board applications
Wide range of mating heights