Surface mount technology choices Discussion
All surface mount connectors must have some form of stress relief. Some companies through the use of the connector screws to lock the circuit board or attachment to the panel, in order to achieve stress relief. While these concepts may increase the mechanical strength, some solutions do not even need the second assembly or artificial representations can provide the necessary supportive and reliable board.
Through-hole reflow technology to surface mount connector can take place through the machine, and to provide more robust than it mount technology circuit board connections. With a similar through-hole pin through hole pin dip solder paste reflow or pores are required to be part of the drilling PCB, so that these thin needle through the reflow. These through-hole and surface mount pin signal pins used in combination, often enhanced by the mechanical strength by the supply and ground double the load. However, when used high-speed pin through-hole reflow applications will have some disadvantages.
Although the surface mount pins for signal performance, return the needle through the hole in the board was able to provide a more solid connection. Moreover, in the mezzanine daughter card connector height and weight continued to increase in the case, THR pin undoubtedly provide superior rigidity and strength. Press-fit technology in the past 40 years as the de facto standard backplane connector, SMT assembly/ THR backplane solutions are often beyond the crimping of the signal performance, while also providing exceptional durability. If the implementation is correct, no doubt is the surface mount technology is applicable to any application.
Coplanarity
As more and more boards are compressed into smaller and smaller chassis, resulting in mezzanine connector currently in great demand. More pin counts and smaller pad connector demand driven by rapid and mass production of the company's many unique design options for the designer. However, the biggest potential problem is: which one surface mount connector pcb assembly, testing, and even after installing the application to provide the most reliable connection?