IEI Integration ICE-DB-T6 - Manual (Page 86)

Type 6 Carrier Board Design Guide
Page 76
5.3 Connector Footprint
It is essential that the distance and the alignment of the dual connector shape on the PCB
comply to the dimensions defined by the COM Express Specification. The alignment
between the two single connectors is guaranteed by the connectors peg holes shown in
following drawings. It is very important that the PCB drill tolerances of these peg holes are
within the recommended ranges mentioned below. Otherwise, the interconnection
between carrier board and module may cause functional problems for the system. A dual
connector model with a reinforcing bar spacer can be used to ensure the alignment
between the two connectors during assembly instead of two single connectors. All
dimensions of the following drawings are shown in millimeters or Hirose FX8-100S
connector detail spec, please reference the Hirose website.
Figure 5-3: Single Connector Physical Dimensions
Figure 5-4: Dual Connector Footprint and Alignment