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Another example can be observed when considering DC/DC converters, which, quite often, rely on a cheap terminal block. For high reliability applications this may not be suffi cient, and it would be more appropriate to use a four-way Kona connector, or even two two-way Kona connectors (Figure 5). In both these examples, if a cheap connector were to be specifi ed, then a trivial accident on the shop-fl oor, or - worse - a condition caused by the environment when
copper alloy contacts ensuring electrical continuity and good spring force properties. The tough resilient housings protect the connections from physical knocks and damage. Male pin connectors are of a through-board PCB mount design with additional board fi xings for strain relief. Female cable housings are supplied with thumbscrews fi tted. Female cable contacts are ready for 8AWG cables to be soldered before assembly to the housing. As is shown in this assembly video (Figure 3), the robust housing helps with blind mating, and the socket-head screws enable the use of ball- head screwdrivers which permit angular
operation, also simplifying blind mating. Let’s take a look at a couple of common use cases.
A three-pin M300 connector can be used to hook up a panel mount potentiometer. Panels are often built using a modular construction, where, during fi nal assembly on the production line, they are connected by hand. The enclosure panel, PCBs and other component parts such as power supplies, and sensors are all connected together by hand, so having a robust connector such as the M300, especially if supplied as a cable assembly, will help avoid damage during production (Figure 4).
in operation, could render an assembly or piece of equipment that costs thousands of dollars totally useless.
When it comes right down to it, the humble connector that design engineers often consider last (if at all) is actually very vulnerable, due to its mechanical as well as electrical function, and also because it is the one component that personnel with varying degrees of training and aptitude handle on a regular basis. By being proactive and risk- adverse, the designer can increase product reliability and make a lifelong friend of the production and maintenance staff.
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www.cieonline.co.uk Components in Electronics July/August 2022 49
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