6 Tips for Designing Multiple Connector Simultaneous Pair Interconnect PCBs

On a PCB where multiple connectors need to be mated to interconnect at the same time, this can be relatively complex because the possibility of misalignment is higher when multiple connectors are used per board, so how should one go about designing for improved connectors? 6 tips for designing multiple connectors to simultaneously mate interconnect PCBs.1. While floating connectors can be accumulated based on tolerances, make it clear whether connectors that allow the X and Y axes to float can be used.2. Be aware of a connector that if the design contains two micropitch SMT connector sets, make it clear whether it can be made to work with a high-density system or a longer one that has the same total number of I/Os.3. Connector sets can be used together with the case. 3. can be appropriate to add a cable assembly, if the design requires two mezzanine connector sets, whether it is possible to use a mezzanine connector set, and then the other mezzanine connector into a cable assembly. Although it is a bit expensive, but will greatly reduce the alignment problems. 4. Since the PCB has greater tolerances, consider using secondary processing to improve the manufacturability of the PCB. For example, make larger pads and then reduce the size, or use a laser to create alignment holes, or laser cut the board to align with critical dimensions.5. Do a mathematical calculation of the tolerances, calculate the tolerances of the PCB and the connector, and then see if everything lines up. Although PCB tolerances are usually much larger than connector tolerances, this applies to all connectors, and the smaller the connector pitch, the more likely it is that the tolerances/calculations will add up.6. The larger the connector system, the better, and the effect is very, very noticeable when pairing interconnecting PCBs. For example, larger centerlines (2.54 mm is good) and higher through-holes to mate connector sets, sockets with contacts that have multiple contacts, chamfered lead-in lines, alignment features, etc.

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