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In May, I had the privilege of presenting "Cost Drivers in PCB Production" to attendees at the SMTA Wisconsin Expo. This presentation, one of our most popular, received tremendous feedback, inspiring us to share our insights more broadly through a comprehensive white paper on the subject.
One of my favorite examples to share from this white paper which really illustrates the impact of both cost and sustainability is panel utilization. Utilization is the percentage of the working panel allocated to the specific array. Pricing is based on the entire working panel. If you have a PCB that takes up two-thirds of a panel, there is not enough space left on the panel to fit a second board but you still pay for all the wasted material. In addition, this results in excess material waste.
Consider these three panel options below. We can see the large waste strips (or wasted area) in panelization 1. In panelization 2 and 3 we have removed these waste areas. The smaller array allows more boards per panel and helps keep a high material utilization and also a low material demand.
In these examples, panelization 3 is the lowest cost option. It has the same composition as the actual PCB but ends up in the recycling bin after the PCB is depaneled. Option 1 is a very common request however it comes at a premium and increased waste over option 3 which has a higher panel utilization and also a smaller material demand due to the reduced number of smaller rails.
This visual is a tangible example of cost driver and sustainability impact, and how they can relate to one another. In this white paper we dive into more than 20 examples categorized into two types: hard cost drivers and soft cost drivers, providing insights into their impacts and effective management strategies, while also keeping in mind the aspects that contribute to the sustainability impacts of a PCB.
Hard cost drivers encompass direct, tangible costs that are quantifiable and associated with the physical aspects of a project. These costs are typically straightforward to estimate and track, making them critical components of project budgeting. In the white paper, we break down aspects like board size, layer count, and via types
Soft cost drivers, on the other hand, are indirect costs related to the electrical design, engineering analysis, drafting, and modeling. Hiring skilled professionals, using advanced design software, and conducting feasibility studies are integral to this phase. While these costs are not directly tied to physical components, they are essential for ensuring that the project’s feasibility, safety and adherence to desired specifications.
We invite you to explore this detailed article on cost drivers and sustainability impacts, helping you get your design right from the start. You can download the full Cost Drivers white paper here.
Michael Marshall is a field application engineer at NCAB Group.
