Figure 14: B2B Connector Orientation and Alignment
Board to Board Alignment Arrows
X25310-041621
Mating: JSOM Standoff-nut Tighten Sequence
and Torque Setup
To protect the mating connector from over mechanical stress and to minimize strain during
board-to-board assembly, it is important to tighten the standoff nut in a specific sequence. The
recommended mechanical standoff tightening sequence (S > W > N > E) is shown in the
following figure. Once the S and W nuts are tightened, the SOM board will be almost flat to the
carrier card. The subsequent tightening of nuts N and E ensure the SOM and carrier connectors
are completely engaged.
Chapter 3: Mechanical Design Considerations
UG1091 (v1.0) April 20, 2021
Carrier Card Design for Kria SOM
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