The term ‘system integration’ refers to Box build, which includes all the other assembly work involved in an electromechanical assembly, other than the production of the printed circuit board (PCB). The box build assembly is also an electromechanical assembly process that consists of installation and routing of cabling or wire harnesses, installation of sub-assemblies and components and enclosure fabrication. A large cabinet full of wires or a small enclosure or a complex fully assimilated electromechanical system with pneumatics and electronics, the box build can mean a Printed Circuit Board Assembly (PCBA). The box build assembly process can include varying degrees of complexity at each step and is specific to each project. For instance, merely placing a printed circuit board assembly (PCBA) within an enclosure can be one of its levels. Whereas, the complex task of connecting a PCBA to a user interface display may be a subsequent step. Installation of sub-assemblies, routing of cabling or wire harnesses, installation of other components and fabrication of enclosures comprises the most common box build assembly processes. Let's have a look at the box build assembly services. It consists of:
Few things to keep in mind while considering a box build assembly process Are you considering box build assembly process in near future? If so, then here are few things to keep in mind before considering a box build assembly process. 3D CAD Model There are many CAD packages that offer free drawing viewers. If at all possible then you should provide 3D CAD models, as it aids to visualize the final product. Most of the forward-thinking EMS providers possess CAD packages, enabling easy conversion of drawings into build instructions, as well as updates, if required. Also, a layout drawing with the information of key components should be incorporated. Product Dimensions Exact size and weight of the assembly must include in the product dimensions of the unit. Therefore, this detail information is a must to inform the EMS provider as it is not only beneficial for shipping but also to make decisions about how the units will control throughout the complete box build assembly process. Also, you ought to decide and inform your EMS provider how you need the finished product to be packed and transported. The methods that are influenced by dimension information are packaging, storage, transportation, and shipping. Bill of materials (BOM) For any Electronic Manufacturing Service provider, bill of materials or BOM is one of the most critical pieces of information, which is also known as the formula, recipe, or ingredients list. Bill of materials assists the EMS provider in getting an idea of all the essential components and materials that need to be sourced. A specific purpose, procurement process, and associated cost is included in every item on a bill of materials. It is not necessary to give out only significant piece of information, you can also define the smaller elements such as nuts and bolts, tie wraps, wires, adhesives, washers, heat shrink and much more. Even if these elements considered as consumables, they still have price that you need to pay for buying. Thus, to avoid unexpected cost additions and any unpredicted production delays, a well-crafted bill of material can assist the Electronic Manufacturing Services (EMS) provider. Testing For any electrical devices, safety comes first as it is one of the prime concerns. Therefore, you need to specify the necessary electrical safety testing like earth bonding and flash tests for electrical system of box build assemblies. It is preferable to discuss with your EMS provider if you wish to perform functional testing, factory acceptance testing, visual inspection, and much more as they are skilled and know-how of what works best. Hence, both simple and complex box build assembly depends upon comprehensive requirements gathering and whenever you decide on having a box build assembly process, it is better to keep all this data handy. Also to get the best result, you should discuss it with your EMS provider. So, it is better to be acquainted with all these information and decisions beforehand. PCC-I is one such company that offers sub-system and complete PCB box-build and system assembly services to customers.
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