An Introduction to Flexible Circuits with Joseph Fjelstad

On today’s episode, we’re turning our focus to a pivotal innovation that has transformed design and manufacturing processes: flexible circuits.

Flexible circuits have emerged as a game-changer in the manufacturing and design of electronic assemblies. With their unique ability to bend, twist, and conform to complex shapes, they offer unparalleled advantages in applications where space is at a premium and reliability is paramount.
From wearable technology and medical devices to aerospace systems and consumer electronics, the use of flexible circuits has expanded rapidly, bringing with it both opportunities and challenges.
In this episode, we’ll explore the evolution of flexible circuit technology, discussing its key benefits, such as lightweight construction, enhanced durability, and improved design freedom.

We’ll also touch on the manufacturing complexities, material considerations, and the critical role that process control plays in ensuring reliability and performance.

My guest today is Joseph Fjelstad. Joe is the founder of Verdant Electronics.
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Ultra HDI Panel Discussion – Recorded Live at SMTA!

Today, I’m in Rosemont Illinois at SMTAI, Surface Mount Technology International. I’m in the Ultra-HDI Pavilion on the trade show floor. And what are we going to talk about here in the Ultra-HDI pavilion? Ultra high density interconnects, of course.

As the demand for smaller, faster, and more powerful devices grows, the need for innovative solutions in circuit design has never been greater. UHDI’s represent a significant leap forward, allowing for more connections in a smaller space, pushing the boundaries of what’s possible in electronic assemblies.

But what exactly are UHDI’s? Essentially, they refer to circuit boards with incredibly fine pitch interconnects, enabling higher functionality and complexity in much smaller form factors.
This breakthrough is transforming industries like consumer electronics, aerospace, automotive, and medical devices, where space, weight, and performance are critical factors.

In this episode, we’ll explore the advantages UHDI’s bring to the table, from increased design flexibility and performance to better thermal management. We’ll also discuss how UHDI’s are set to impact the assembly process. With tighter tolerances and more intricate layouts, UHDI assemblies will require new approaches to assembly, inspection, and reliability testing.

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Thermal Profiling Best Practices

One of the most critical aspects of manufacturing high-reliability circuit assemblies is thermal profiling during the reflow process.

Whether you’re designing, engineering, or troubleshooting circuit assemblies, understanding how temperatures during the reflow process influences the quality and performance of your assemblies is essential.

In this episode, we’ll break down what thermal profiling is, why it’s important, and how it affects everything from solder joint integrity to component placement.

We’ll also explore the challenges and solutions involved in getting your thermal profile just right, ensuring your circuit assemblies are built to last in a competitive and demanding industry.
Will review thermal profiling best practices, common mistakes, and the various capabilities of thermal profilers.

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Contract Manufacturing Best Practices with Adrian Leal

If you’re part of the electronics landscape, you’ve likely encountered the role contract manufacturers play — and it’s a critical one. These specialized partners bridge the gap between design innovation and full-scale production, bringing efficiency, expertise, and flexibility to the table.

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High-Reliability Solder Paste Selection Best Practices

As the demand for more durable and dependable electronics continues to rise across industries, the choice of soldering materials, such as solder paste, plays a pivotal role in determining the reliability of these devices. We’ll discuss how selecting the right solder paste can influence performance and longevity, and we’ll hear from an industry expert about the latest advancements and best practices in soldering material technology.

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Optical Inspection System Best Practices

Two episodes ago, episode 149, we talked all about automated optical inspection. Today we’re exploring the impact of less automated inspection Technology, that being optical microscopes.
From commercial, class 1 electronics to high reliability class 3 electronics, the intricate electronic devices we rely on daily are assembled with astonishing precision. This precision wouldn’t be possible without the aid of advanced optical microscopes. These remarkable instruments allow technicians and engineers to inspect, analyze, and ensure the quality of electronic components down to the minutest detail.

In this episode, we’ll uncover how optical microscopes have impacted electronic assembly, enhancing productivity, ensuring reliability, and driving innovation.

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The Truth Behind Statistics

Statistics, at its core, is the science of making sense of data. From predicting trends and making informed decisions to ensuring quality control and optimizing processes, the applications of statistics are vast and varied. In the electronic assembly industry, where precision and reliability are paramount, statistical techniques become indispensable tools for engineers, manufacturers, and quality assurance professionals alike.

Join us as we unravel the complex yet captivating connections between statistics and the truth. We’ll delve into real-world case studies, and uncover the statistical principles that ensure the decisions we make every day are based on facts, accurate data, and accurate statistics.
In today’s episode, we’re also going to tackle some common myths associated with statistics and shed light on how misinterpretation of data can lead to false conclusions. Many people think of statistics as infallible, a definitive answer to every question posed by data. However, this couldn’t be further from the truth. Statistics is a powerful tool, but its effectiveness hinges on proper application and interpretation.

We’ll discuss myths such as “Correlation equals causation,” where the mere relationship between two variables is often mistaken for one causing the other. We’ll also address the misconception that a larger sample size always guarantees accurate results, and how ignoring the context or the source of data can lead to misleading outcomes.

Moreover, we’ll explore real-world examples where statistical missteps have led to costly errors and how these pitfalls can be avoided through rigorous analysis and critical thinking. By understanding these common misconceptions and learning how to approach data critically, you’ll be better equipped to harness the true power of statistics.

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AOI and X-Ray Best Practices

In today’s episode, we’re exploring automated optical inspection (AOI) and x-ray inspection technology within the electronic assembly industry.

Joining us are two experts who bring a wealth of knowledge and experience to the table.

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IPC Apex Special (part 3 of 3)

Recorded live in Anaheim California during the IPC Apex Expo.

This episode features four interviews including:
• Kimberly Fagan from PVA
• Taylor Wagan from CETEC ERP
• Neil Hubble from Akrometrix

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IPC Apex Special (part 2 of 3)

Recorded live in Anaheim California during the IPC Apex Expo.

This episode features four interviews including:
• David Chiu from Test Research, Inc.
• Michael Dolan from South-Tek
• Dalton Dodge from Brooks Automation
• Michelle Ogihara from Seka Machinery, Inc.

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IPC Apex Special (part 1 of 3)

This episode features three interviews including:
• Gus Mavrou from Seho
• Mark Stansfield from Solderstar
• Jesper Lykke from Viscom

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Designing Electronics to be Reliable in Harsh Environments

The challenging world of electronics becomes even more challenging when the end product is destined for harsh environments. For high reliability products operating in a harsh environment, the quest for reliability is not just a goal—it’s an imperative. These are not your everyday gadgets; often they’re critical components of systems designed to operate under extreme conditions, where failure is not an option. From the scorching heat of desert landscapes to the unyielding cold of arctic tundras, from the high-pressure depths of our oceans to the radiation-filled expanse of space, the demands on these electronic products are as varied as the environments themselves.

While ocean depths, outer space, and frozen tundras are arguably harsh environments, we don’t have to look too far for examples of product failures in less harsh environments. One example that comes to mind is the state of public EV charging stations. Government reports have concluded that up to 25% of public EV chargers are at any given time.

While there are many reasons for this, one may conclude they are not designed and manufactured for the intended in climactic operating environment.

On this episode, we’ll uncover the numerous challenges that designers and engineers face in their quest for reliability, durability, and functionality of the final product.

As we navigate through this complex landscape, we’ll highlight the strategies that enable these products to not just survive, but excel in unforgiving conditions.

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A Conversation with Indium’s Rick Short about Education-Based Marketing

We’re the best, we’re number one, we’re better than them, we’ve won more awards than our competitors, we’ve all seen those ads. While this form of advertising isn’t unique, when’s the last time it caused you to buy a product based on the ad. I think we all know that answer.

There was a time when we relied heavily on print advertising to determine what products were available and from whom. The two primary methods to gain product awareness were print advertising and trade shows. While advertising and trade shows still exist, they are no longer the primary method of product awareness.

31 years ago, beginning on April 30, 1993, all of that began to change. What happened on April 30, 1993? Public access to the Internet was born.

Over the past 31 years, Internet technology propelled us into an age of self discovery. The older generation accuses the younger generation of always having their face in a screen. While that may be true, it’s not always TikTok, Instagram, Facebook, or Snapchat. People today, particularly younger people, research products, technologies, and a host of other things online. Consumers today are far more educated on the products they wish to purchase them at any time in history.

In what I find to be an exceptional irony, much of the industry responsible for building the technology behind Internet connectivity continues to advertise their products in a pre-Internet style.

You may ask, what does this have to do with reliability? Building reliable products requires a net sum of a vast amount of best practices. One of those practices is insuring the right products, procedures, specifications, designs, and so many other factors are implemented.

This goal cannot be accomplished by just reading advertisements from sellers. Frequently, engineers struggle to solve problems without a complete knowledge of the root cause of the problem. Particularly today, with so many in-house subject matter experts retiring, advertisements boasting the number of customers, time and business, and where they place in the hierarchy of competitive products do not assist the engineer and understanding the root cause of a potential problem, and certainly not the solution.

Over the past several years, several companies in our industry have begun to change their advertising strategies from transactional, to transformational. That is to say they help to connect problems to solutions, more than merely hyping products.

My guest today fully understands the value and effectiveness of what I like to call “Conscious Marketing “.

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A Candid Conversation with Industry Icon Doug Pauls

We’ve discussed the silver tsunami on the show numerous times, the unprecedented rate of which employees are retiring. When engineers and other employees retire from companies, they take with them more than a set of gold cufflinks or an engraved plaque. In many cases, they also take with them wisdom and knowledge.

Perhaps this is never more true than in the case of my guest today. And who is that? My friend and colleague Doug Pauls.

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Live from SMTA’s Pan Pacific Strategic Electronics Symposium (PanPac)

This episode was recorded at SMTA’s Pan Pacific Strategic Electronics Symposium on the big island of Hawaii.

My guests on this episode are Dr. Chuck Bower, founder of PanPac, Keith Bryant, and Dr. Ron Lasky.

We discussed the history of PanPac, technologies introduced at PanPac, and what makes PanPac so unique. We also discuss Dartmouth College’s unique engineering innovations program.

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