DIMM Press-fit Socket pin seating position effect on socket to system board interconnect

Abstract

This paper investigates the effect of press-fit socket pin seating position on the socket to system board interconnect. S-parameters of two channels, having different pin seating positions relative to the via holes, were measured. The s-parameters were de-embedded to find the s-parameters of socket to system board interconnection. The transmission coefficients showed better gain response between frequencies 600 MHz-1.6 GHz for slighty off-center seated socket pin channel interconnect compared to the center seated pin channel interconnect.