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Digital Twin Drives Design in the Smart Factory New product realization and design for man- ufacturing and assembly (DFMA) has now started to become more visible as a program that can improve a company's time to mar- ket and lower product costs. This is one of the main focuses of Industry 4.0 for the smart fac- tory. Many programs are underway by numer- ous companies, and what is now needed is a framework to coordinate the application of these programs. This article will cover the interactions of DFMA and the need for the development of a new framework to coordinate the trade-offs provided by digital twin simulations. Concurrent engineering has been the basis for electronics design. Its one-way interactions with manufacturing constitute the "old way" of thinking. This article will also propose a new framework—digital twin—patterned after the manufacturing software framework of con- current manufacturing. This framework will provide the interoperability for manufacturing capabilities and characteristics to be planned into electronic assemblies before the tradition- al CAE/CAD processes. As part of this frame- work, the basis for trade-offs will be the ba- sic DFMA metrics that have been developed by different companies. Digital twin is comple- mentary to the growing application of Industry 4.0, smart factory software, and product data management (PDM) software used in electron- ics manufacturing (Figure 1). We have all seen how electronics technol- ogies are increasing in capability at an ever- increasing rate. Unfortunately, those of us in manufacturing have also seen a corresponding increase in the complexity of packaging. Mod- ern EDA tools and concurrent engineering are the primary driver of this phenomena. What we have not learned to do in this era is to de- Feature by Happy Holden I-CONNECT007 Figure 1: Digital twin evolved from conventional simulation and electrical models to combine with the manufacturing twin models and the performance twin as well as other features of the smart factory. (Source: Machine Design, March 2019) 10 PCB007 MAGAZINE I JUNE 2019