Consider robustness, flexibility, and processing requirements in your design to be assured that you're selecting the best board-to-board connectors on your utility. A major concern for machine designers is the way to get signal and power to the device in a method that doesn’t interfere with purposeful targets, comparable to portability, wearability, or size. Many options are available for connectors that help achieve these aims. PCB terminal blocks and headers are commonly used connectors for medical device functions. It is crucial for designers who select terminal blocks to consider how the PCB is linked inside of the device. In markets such as medical devices, course of automation, industrial automation, and building automation, units often include multiple circuit boards within their end merchandise (Figure 1), which provides complexity to the system structure. Figure 1: Medical and industrial gadgets often comprise multiple circuit boards. Many connectivity merchandise can be found in each of those configurations, but for essential applications like interface and i/O modules, controls, communication devices, and affected person monitoring units in medical equipment, PCBs should additionally meet three requirements: robustness, flexibility, and processing capability.
First, let’s have a look at robustness. Board-to-board products have to be very rugged and strong to endure the operation rigors of industrial and medical use. In excessive-vibration environments, the contact connection points need to be stable with no intermittencies. One way to achieve that is by rising the number of connection factors on the contact interface. Figure 2: Bifurcated contacts have two particular person contact points to offer an additional measure of confidence in high-vibration environments. Next, a strong mating interface will prevent contact harm if the mating connectors turn out to be misaligned (Figure 3). High-tolerance compensation, whether for single or multiple mated pairs on a board, is essential. Keying of the mating halves and indication of the primary pole on the connectors is necessary to forestall mismating of the connector halves. Finally, gold plating on the contact interface allows for a excessive variety of mating and unmating cycles without damaging or degrading the contact interface.
Figure 3: If the mating connectors are misaligned, high-tolerance compensation is crucial. Flexibility can be essential. For medical equipment, building system, and industrial automation purposes, designers want flexibility by way of how they orient the PCBs inside of their enclosures. Figure 4: Connectors that enable for all three PCB configurations - mezzanine, coplanar, and orthogonal - will improve the design flexibility. When you have virtually any inquiries concerning where by and how to utilize PCB connector (http://isaevclub.ru/), you can e-mail us at the website. Additionally, depending on the space constraints of the machine, having a choice of various pin sizes and centerline spacings is important. Common centerline spacings, like 1.27mm, are crucial, however smaller centerline spacings, like 0.8mm, are more and more in style in today’s higher-density PCB designs. Perhaps of even better importance is the power of the board-to-board connectors to have an allowance for the dimensional variations between circuit boards. This is named stack height. Figure 5: Connectors that permit for varying stack heights don't have to hold very tight tolerances on PCB stacking dimensions.
Another essential consideration is the allowable tolerance if there may be more than one connector on the board. As a result of tight centerlines, tolerance stack-ups could cause issues with multiple connectors on a board. Fortunately, connector manufacturers can take this into consideration when designing their connectors, so that even with misalignments as much as 0.3mm, the connector can nonetheless present a solid connection to the mating halves. Lastly, given the excessive information rates board-to-board connectors can handle, shielding is crucial for protecting against electromagnetic interference within gadgets. Parts processing and SMT PCB connector manufacturing are one more crucial consideration. Given the numerous advances in PCB designs, the computerized placement of elements, corresponding to connectors, onto the PCB is essential. For that reason, excessive-speed board-to-board products need to be out there on tape-and-reel or tray packaging to facilitate automated meeting processes. Further, since most PCBs comprise no less than some floor-mount components, board-to-board connectors must withstand the temperature profiles of a high-temperature reflow course of. Connector plastics, akin to liquid crystal polymers, are perfect for the sort of course of. Finally, board-to-board connectors should allow for automatic optical inspection or other inspection techniques. While unshielded components are easily checked with automated optical inspection, shielded components pose a problem, as their contacts are beneath the part to improve shielding. Computed tomography offers a superb answer for most of these products. By contemplating robustness, flexibility, and processing in your design, you might be assured that you are selecting the best board-to-board connectors on your software. Visit Phoenix Contact online. Like this article? Try our board-to-board, terminal blocks and The best way to Specify articles, our Medical and Industrial Market Pages, and our 2020 and 2019 Article Archives.