Extended lead times, fake parts, 300% price hikes: What could be next?
It’s commonplace among electronics manufacturing services companies to develop workarounds for problems that crop up quickly, or to think on our feet to find ways to deal with seemingly insurmountable obstacles. Worldwide supply chain disruptions are not unusual to the electronics design and assembly and design industry. The current situation is exceptional, however, and its causes wide-ranging, but of course we still must get the product built and shipped to the customer. That doesn’t change.
The current shortage of parts came as no surprise: We saw the writing on the wall some four or five months ago. Anticipating problems is critical in this business. We secured large quantities of components that, for example, we knew were becoming very hard to find but also required for current and future customer builds. Indeed, some parts now have lead times of up to two years, such as certain types of FPGAs, microcontrollers, and other types of ICs. Unfortunately, this means larger-than-normal inventory on hand and at our partners’ locations, which is contrary to our “just in time” operational model.
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Even our wildest predictions for new technologies like the IIoT could be too modest.
“One day there will be a telephone in every major city in the USA.” This outrageous assertion, attributed to Alexander Graham Bell, illustrates the difficulty we face in trying to grasp the full potential of great opportunities. He also suggested – presumably later – that “the day is coming when telegraph wires will be laid onto houses just like water or gas – and friends converse with each other without leaving home.”
And so it is, I’m sure, with the Internet of Things (IoT). It’s just getting started. Of course, great claims have been made, particularly on the number of devices that will become connected. The IPv6 address space permits more connections than we can practically contemplate. But it’s the types of applications and services, the capabilities we will gain by leveraging data from IoT devices, that will change the way we live and work in ways we cannot conceive right now.
Under the general heading of the IoT, the Industrial IoT (IIoT) has taken on a life of its own as commercial organizations realize the potential benefits. It’s a key element of the fourth industrial revolution, the enabler for physical systems to become cyber physical systems.
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The current crisis was years in the making.
One of the biggest current concerns for the economy, in virtually every country in the world, is the state of the global supply chain. Whether discussing the shortage of chip’s impact on the auto industry or the shortage of paper goods (think toilet paper), all fingers point to a supply chain that is showing signs of fatigue.
To fully appreciate the situation we face, one needs to first look at how the supply chain got to this point.
Historically companies strived for a fully integrated manufacturing capability, so materials, parts, subassemblies, etc., were designed and controlled by the company that produced the end-product they were to be used in. As an example, an automaker would own the steel mill, glass-making facility, radio manufacturer, paint factory, etc., so virtually all parts that went into their automobiles were manufactured – controlled – by one company. Shortages, if and when they occasionally might occur, could be quickly rectified by moving resources around within the parent company to increase supply of needed items.
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I left off last month on the subject of progress. “Are you making progress?” I asked. “In your career? In your life? And if not, do you plan to start?”
We at UP Media Group are planning to start right now. Last month, during our annual PCB West trade show, we announced the signing of a letter of intent to sell certain assets, including this magazine, to the Printed Circuit Engineering Association. More on that in a moment.
In its two short years, PCEA has already established itself as the leading association for printed circuit engineers. The leaders of the Designers Council formed it after IPC, its longtime benefactor, decided to go a different direction. The trade group has ties to SMTA and the European Institute for the PCB Community (EIPC), among others. And it is the certifying body for the PCE-EDU Printed Circuit Engineering Professional curriculum.
What, exactly, does this change mean? I’ll answer three ways.
First, for PCEA, it acquires the PCB West and PCB East trade shows, PCD&F/CIRCUITS ASSEMBLY magazine; the PCB UPdate digital newsletter; the PCB Chat podcast; the PCB2Day workshops; and Printed Circuit University, the dedicated online training platform. It also includes all the databases and related websites, among other things. The move makes PCEA a significant player in terms of its capability to reach a huge audience of printed circuit designers and engineers, fabricators and assemblers, not to mention the massive trove of content it has for those audiences.
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Getting a close-up look at board quality.
A printed board microsection is one of the best ways to examine the quality of boards and any faults or failures.
The microsection (FIGURE 1) shows a plated through-hole that has been soldered with the nickel layer and through-hole copper visible. Normally, customers would accept the plating standards offered by the fabricator, or define their own, which may or may not impact the price. The nickel layer is part of the nickel/gold surface finish with the very thin gold of less than 1µm consumed during soldering and not visible. The remaining nickel is 5µm, and the copper is around 32µm. This is generous on many circuits board produced today and soldered very easily in production.
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Six areas to consider for optimal print quality and consistency.
In the stencil printing process, the squeegee blade often fails to get the recognition it deserves. Yet the squeegee is the item that does all the work and is the unsung hero. Consider a squeegee running in high volume on a 300mm board may put in between five and 10 miles per day of grueling aperture filling, and it becomes clear close attention to squeegee attributes may result in higher-quality results. With that said, here are my top squeegee awareness tips.
Material. In the early days of SMT, squeegee blades were predominately made from polyurethane (rubber), as the very first surface-mount printing processes used mesh screens. As the industry transitioned to metal-etched stencils and then laser-cut, stainless steel squeegees became standard. However, there are applications – such as heavily stepped stencils (say a 75µm step down on a 150µm-thick stencil) – where the compliance of a polyurethane squeegee is beneficial. The vast majority of squeegee blades today, though, are stainless steel. And not just any stainless steel; to be sure, a tremendous amount of IP and proprietary alloy formulation is in today’s sprung steel compounds used to manufacture high-quality blades. They keep a good sharp edge and provide excellent consistency for the pressure and force applied, which delivers the aperture filling necessary for a repeatable process.
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