640136-9 is a board-to-board connector housing designed for bifurcated leaf edge connector applications. This receptacle-style housing features 9 positions arranged in a single row with a centerline pitch of 3.96 mm (0.156 in). The connector includes socket-type contacts and incorporates polarization for mating alignment without mounting ears. It is EU RoHS and ELV compliant, making it suitable for environmentally conscious designs. This edge connector housing is commonly used in board-to-board interconnect applications where reliable electrical connections are required.