Epec's Blog | Electronics Manufacturing Solutions

It is not often we build an electronic device without any sort of prototyping, but it can happen given the nature of the project and the deadlines being met. If a customer needs a Human-Machine Interface (HMI) to hit the floor in 2 months, the time to develop and build a prototype is strained as both the customer and design engineers will want to test it and provide feedback.

When talking about the world of technology, we often focus on the performance that circuitry and components provide to keep up with the fast-paced electronics we use in commercial businesses and our daily lives. We are achieving higher processor speeds and frequencies that become demanding on present printed circuit boards (PCBs). Yet, we also need to focus on the sizes of the applications that can have an impact on the PCB design.

When tackling any new project, it’s human nature to focus on the most difficult and uncertain tasks first, while leaving the perceived low-risk and simple activities for the end. When it comes to developing a new product, whether it be for a medical device, commercial widget, or even a mil-aero box build, the initial focus is on the major system elements.

Switching battery pack suppliers on an existing design introduces risks related to compatibility, component sourcing, and certification. Even when targeting a drop-in replacement, differences in materials, BMS design, and supply chain capabilities can impact performance and manufacturability. Careful validation, supplier evaluation, and recertification planning are essential to ensure continuity.

Higher current carrying flex circuit designs create challenges that need to be addressed early in the design process to ensure both a manufacturable design and that it will reliably meet the bend requirements. These items range from material types/availability, bend capability/flexibility, impact on standard signal lines, and part cost.

At the conclusion of our webinar, How PCB Design Choices Affect Overall Cost from Your PCB Fabricator, we had several questions submitted to our presenter, Ed McMahon, CEO at Epec. We have compiled these questions into a readable format on our blog.

At the conclusion of our webinar, Using Rigid-Flex PCBs to Improve Design Reliability, we had several questions submitted to our presenter, Product Manager of Flex & Rigid-Flex Circuits, Paul Tome. We compiled these into a readable format on our blog.

One of the first steps in designing a custom cable assembly is selecting the wire. There are lots of options to choose before the design can be frozen. Selecting a UL spec wire can be challenging if you are unfamiliar with the standards but knowing just a few options allows for a simplified design.

Flex and rigid-flex circuit boards are a combination of both electrical and mechanical requirements that allow for solutions to many tight packaging requirements. However, this combination is also the potential source of design challenges as some electrical requirements can have a negative impact on the mechanical bend capabilities of flex circuits. If not, correctly addressed the reliability of the finished design may be compromised.

Dynamic flexible circuit boards are designed for applications that require continuous or repetitive motion while maintaining reliable electrical interconnections in a compact form factor. Successful dynamic flex circuit design depends on controlling bend radius, selecting the proper copper type, minimizing layer count, and managing shielding requirements to prevent premature circuit failure.