Connector strips place close together without degrading signal performance

SAMTEC QRF8/QRM8 Series high speed 0,80mm (.0315”) pitch Q Rate connector strips provide an industry standard ground/power plane that allows the Edge Rate contacts to be placed closer together without degrading signal performance. The result is a slim 5mm body design to help minimize pcb real estate for limited space applications. Product is available with up to 156 I/Os in 7mm and 10mm stack heights.

http://www.samtec.com/designcon