The Samtec ADF and ADM connectors placement were shifted 0% and 15% (based on connector pad diameter) on the X and Y-axis for both the SOM and carrier cards. The shifted connectors were reflowed and were able to mate without any issue.
The mated connector boards were submitted for cross section testing to validate their mating conditions. Based on the cross-section images, the connectors which shifted by 15% were able to self-align during reflow soldering. The following photos are a cross section image of the mated connectors. The proper contact of the female and male connector pins is achieved.
Figure 1. Cross-section Image of Mated Connectors for 0% Shift
Figure 2. Cross-section Image of Mated Connectors for 15% Shift
