PCB :: Fabrication Process

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All About Flex: Plated Through-holes in Flexible Circuits

There is probably no more important feature than the plated through-hole (also called via or via hole) with regard to the reliability and integrity of a flexible circuit. The through-hole provides electrical connection between insulated layers and enables electrical functionality on double-sided and multilayer flexible circuits.

The Economics of Reducing Cycle Time in PCB Fabrication

As circuit board fabricators are constantly pressured for cost reductions, speed is definitely one thing worth paying for in 2015. This article highlights examples of industry practices that successful fabricators in the quick-turn market embrace that can help those companies who want to reduce cycle times in their operations.

The PCB Marathon

Printed circuit board shops have been driven to build new business strategies that overcome the paradigm of trade-offs, in which customers had to choose between one characteristic or another, into a new way of doing business in which an equilibrium is found that meets customer needs.

Flex Circuit Shielding Design Options

Shielding may not be your company’s number one design concern when thinking about your interconnect designs. But if you have to shield circuits for EMI, then you will need to depend on your supplier to assist you with their favorite shielding technique and experience.

Practical Application of Lean Six Sigma to Drive Cycle Time Reduction, Part 1

One of the most systematic and successful approaches to the challenge of cycle time reduction can be found in the principles and tools of lean six-sigma methodology. The success of this strategy requires commitment; it is not a quick fix, nor will it be effective if it is only used as an occasional housecleaning activity.

Interim CEO Jeff McCreary Discusses Recent Changes at Isola

Isola’s Interim President and CEO Jeff McCreary explains to Barry Matties the impetus for the personnel reduction taking place at Isola, the closing of their northern California facility, and why there’s no need to panic. He also shares his view of what the industry may expect from Isola going forward and what the company is looking for in a new CEO, the name of which McCreary expects to announce in the next few months.

Mutracx: First Install Achieves CAM to Etch in 5 Minutes

Mutracx Sales and Marketing Director Peter Coakley discusses with I-Connect007's Barry Matties how the new Lunaris machine installed at Whelen Engineering works and explains how it can save time and money on the shop floor.

How to Handle Short Development Cycles

Automotive is a segment that any market can learn from. In past years, we had a saying: “You can have cheap, on-time or high quality; pick two.” Going back five years, this was the response to short development cycles. In looking at the last two years, however, we have the reality of the short development cycle. Mix this with the recent recalls and safety issues, and it is now an unwritten requirement to deliver low cost, high quality and on time. It is not uncommon to go from idea to series production in only 14 months.

The Application of Advanced Ultrasonics in Metal Plating Processes

Most surface modification chemical treatments by their very nature contain hazardous and oxidising chemicals; there is a major concern that these chemicals are used maliciously with the intent to manufacture explosives or formulate poisons to harm the public. Cyanide-based plating solutions and high concentrations of hydrogen peroxide used in current techniques are a significant use of these materials in industry.

Cycling Around

This month in The PCB Magazine we are paying attention to cycle time and the many ways to reduce it in your process—whatever you consider your process to be. Beginning with the story of Whelen’s new fully automated facility in New Hampshire and continuing through discussions on Lean Six Sigma, Kanban, Value Stream Mapping and other cycle time reduction strategies, our contributors have it covered.


Stepping Up To Laser Processing for Flex, Part 1: Opportunities and Implications

Market demand for smaller, faster, wearable, lighter and more powerful devices continues to keep PCB manufacturers scrambling to keep up as they evolve and adapt their manufacturing capabilities to meet changing customer needs. But keeping up with the dizzying pace of change in the world of PCB manufacturing need not be a daunting task.

New Leadership at MuTracx

I-Connect007's Barry Matties speaks with Arnoud De Geus, managing director of the Sioux Group, who discusses the recent integration of MuTracx into the Sioux Group, and how Whelen Engineering, who has installed the MuTracx Lunaris primary imaging equipment and happens to be the United States’ first captive PCB manufacturing facility in many years, will impact U.S. manufacturing.

Testing Flexible Circuits, Part 2: Raw Materials and Components

Even though the raw materials may individually meet certain specifications, it is important to determine if the final product configuration meets those specs. So testing done at the finished circuit level is also needed. Tests specific to the finished circuit will be the topic of our next column on testing.

Carmakers Now Embracing Plasma Treatment

The growing complexity of automotive electronics is leading more carmakers to consider using plasma treatment to ensure greater reliability. Nordson MARCH's Jonathan Doan shares the benefits of the process along with some new information regarding the MES3 requirement with I-Connect007 publisher Barry Matties.

The Reindustrialisation of Europe

With an inquisitive mind and a head for challenges, besides the ability to think outside the box and the courage to dare to be different and strive to be first, Spirit Circuits MD Steve Driver can be relied upon to grab the attention of an audience of PCB professionals. As keynote speaker at the Institute of Circuit Technology Hayling Island Seminar, he lived up to his reputation with a motivational presentation, the two themes of which exemplified his latest entrepreneurial venture.

Final Surface Finishes for Automotive: No One-Size-Fits-All Solution

Regardless of whether your application is automotive, medical or military, there are many factors to consider when selecting a final surface finish. Cost, lead or lead-free requirements, end environment, shelf life, fine-pitch components, RF applications, probe-ability, thermal resistance and shock and drop resistance, to name a few. There is not a one-size-fits-all finish. Understanding the advantages and disadvantages of each surface finish allows the designer to select the finish that best fits each particular application.

Big Strategies for Success

I-Connect007’s Barry Matties speaks with Pratish Patel of Electronic Interconnect about the new strategies and capabilities the company is building. The conversation also covers Electronic Interconnect’s move into the automotive industry and how strategies for buyers could help to lower cost and improve quality.

HDI Technology - Flex Circuits

The flex circuit industry in North America is moving rather quickly. The packaging densities are moving to smaller and the electrical requirements much faster. In order to keep pace with the industry requirements of HDI, North American flex vendors need to invest in equipment, resources and R&D.

Detroit vs. Silicon Valley: What’s Driving the Proliferation of Automotive Electronics?

For the past several decades, modern cars have not changed much. They have four wheels, an engine, a radio (possibly even an 8-track) and seatbelts. Over time, however, cars’ electronics parts have evolved faster than any other part of a car with enhancements like power windows, power mirrors, seat heaters and GPS navigation.

Cars, Cars, Cars!

The September 2015 issue of The PCB Magazine focuses on automotive electronics, and includes discussions on the automotive electronics market today, where it's heading tomorrow, and what it all means to companies wanting to participate; latest innovations in automotive electronics technologies; and what to expect in our car of the future.


Characterization of PCB Material & Manufacturing Technology for High-Frequency

Concepts like Industry 4.0, Internet of things, M2M communication, smart homes and communication in, or to cars are maturing. All these applications are based on the same demanding requirement—a considerable amount of data and increased data transfer rate. The aim of this paper is to develop a concept to use materials in combination with optimized PCB manufacturing processes, which allows a significant reduction of losses and increased signal quality.

Improved Design of Dry Film Resist Laminator for Optimal Transfer of Micron-sized Features

Since the inception of dry film lamination, the process of squeezing two hot rolls at their end axis points has caused roll bending. An innovative process has now been developed whereby the film is attached with a process that minimizes this issue and provides optimal, evenly dispersed heat and pressure across the entire surface of the panel. This simple and elegant design will ensure that the integrity of the resulting image will be ideal, as measured by the continuity of the resulting transferred traces and features.

Plating and Quality are Close Partners

A good plating manager is a seasoned veteran with many years of hands-on experience and probably an engineering degree. Bob Tarzwell sees firsthand how PCB manufacturers, without the proper plating shop set-up operations, knowledge and experience, adapt and accept poor practices as normal while they continue with poor quality processes—even after attempted corrective input from vendors and consultants.

Dry Film Photoresist Thickness Selection Criteria

Dry film photoresist suppliers typically indicate for which process a certain resist type is suitable; however the fabricator still has to select the resist thickness that matches his needs best. The most important thickness selection criteria that come to mind are price, resolution, and yield. This article talks about the advantages and disadvantages of choosing films that are too thin for the application.

Material Witness: The Use of Fillers in Composites

The use of finely divided ceramic fillers in composites intended for use in printed wiring boards has a long history, but most people still associate the idea with reducing the cost of the product by loading it with an inexpensive inert filler. Nothing could be further from the truth...

Design and Manufacture of High-Voltage Electronics

This SMART Group webinar, presented by Ian Lake, director of engineering at Applied Kilovolts Ltd, and moderated by Bob Willis, explored the current technical barriers faced in high-voltage electronics design and manufacturing processes. Although he made it clear that within the timeframe of a webinar session he could only scratch the surface of the topic, Lake gave a valuable insight into basic concepts and drivers and set a perspective on current state of the art and future trends.

A Well-Designed Laminate Supply Chain has to Own It!

Suppliers must use industry knowledge, robust systems, clever software and total visibility to build a supply chain agile enough for any PCB fabricator. Consigned stock, local customization, regional hubs, short manufacturing cycles, controlled processes and highly evolved systems are just a few of the tools needed to develop custom fit solutions that flex and move with the needs of the fabricator and their customers. You can only design the supply chain when you own the supply chain.

Coated Ultra-Thin Copper on Printed Circuit Laminates

Nano copper-based electronic ink and associated processing have been developed to create ultra-thin copper on flexible PCB substrates, allowing for much finer etch resolution and increased circuit density. The process is rapid and sufficiently low-temperature to allow deposition onto temperature-sensitive substrates such as polyimide, plastic and paper.

An Update on the Rogers Material Supply Line

As part of a recent I-Connect007 supply chain survey, we found that RF laminate material can be very difficult to obtain. Rogers Corporation was named specifically in our survey as one supplier with a limited amount of material available. In fact, their delivery time was reported as being as high as 55 days for some materials at one point. In an industry where quick turnaround time is critical, this is one supply line that killed any hope of being quick.

Innovative Technologies Drive PCB Industry Growth

PCB growth has slowed in recent years, though last year the growth rate was slightly higher than the 2% of the last three years. Estimates by IEK of Industrial Technology Research Institute of Taiwan show that the PCB industry will continue to grow in 2015 at a rate of 3-5% with an annual output of RMB 576 billion (USD 93.8 billion).


Rigid-Flex PCB Right the First Time--Without Paper Dolls

The biggest problem with designing rigid-flex hybrid PCBs is making sure everything will fold in the right way, while maintaining good flex-circuit stability and lifespan. The next big problem to solve is the conveyance of the design to a fabricator who will clearly understand the design intent and therefore produce exactly what the designer/engineer intended.

EIPC Summer Conference: Day 2

Refreshed after an excellent conference dinner, and for most, a good night’s sleep, delegates returned for the second day of the EIPC Summer Conference in Berlin, continuing the theme of improving profitability through technical leadership and innovation to meet future market requirements, with sessions on materials and processes for high performance PCBs and advanced material testing strategies to meet OEM and ODM needs.

EIPC Summer Conference, Berlin: Day 1

Berlin, capital of Germany and a world city of culture, politics, media and science, was the venue for the 2015 EIPC Summer Conference, which attracted delegates from sixteen countries, including Russia, Hong Kong, Japan, Israel, USA and Canada, as well as the European Union, to experience a programme of 21 technical presentations over two days. Also included was a visit to the Berlin laboratories of Fraunhofer Institute, Europe’s largest application-oriented research organisation.

Institute of Circuit Technology 41st Annual Symposium

ICT Technical Director Bill Wilkie has always excelled in locating interesting and unusual venues for the Institute of Circuit Technology Annual Symposium, and this year was no exception. For the 2015 event, the 41st, he chose the Black Country Living Museum, an open-air museum of rebuilt historic buildings in Dudley, in the West Midlands of England, home of the original Industrial Revolution.

How to Make Mass Lam Outsourcing Successful

For PCB manufacturers in the United States and Europe, finding a suitable mass lam-outsourcing partner can be a challenge. In this interview with Option Technologies, a Ventec International Group company, I-Connect007 Technical Editor Pete Starkey and Option Managing Director Steve Law discuss the ins and outs of this specialist market.

A New Source for Laser Drills

Publisher Barry Matties recently visited the West Coast offices of Nano System Inc. to catch up with Sam Sekine, formerly of Hitachi. Nano System is a new company focused on producing and selling laser drill systems to the PCB industry. In this interview, Mr. Sekine discusses his staff, the company’s technology, and Nano System’s strategy for the future.

A High-Reliability, Stress-free Copper Deposit for FPC, Polyimide and Rigid-Flex

Conventional electroless copper systems often required pretreatments with hazardous chemicals or have a small process window to achieve a uniform coverage without blistering. To overcome the challenge of metallizing smooth surfaces, a new stress-free electroless copper was developed to serve this important sector of the printed circuit industry.

HDPUG Demonstrates Benefits of Cooperative R&D

The High Density Packaging User Group (HDPUG) is a member-driven, non-profit, project-oriented industry consortium that addresses the integration of new electronics component packaging and interconnection technologies into the supply chains of its member companies.

Electroplating Through-Holes with Different Geometry: A Novel and High-Productivity Process

Microfill through-hole fill electrolytic copper is a new process designed to offer outstanding through-hole fill, particularly for substrates intended for use as core layers in build–up applications, producing planar, solid copper plugs in high-volume production plating equipment. This article describes a novel copper through-hole fill electroplating process designed for use with insoluble anodes and direct current (DC) rectification.

Flexible, Stretchable, and Wearable: If You Can Dream it, You Can Create it!

We originally intended the June issue of The PCB Magazine to be centered on flexible circuits, but it quickly became apparent that we needed to broaden the scope and include all (well, at least some) of the new and exciting things going on these days in the world of flexible everything. As such, we have garnered a trove of authors, with much information to impart on the above mentioned.


Optimization of Acid Copper Electrodeposition Processes for High-Throwing Power DC Plating

One of the three most fundamental aspects of printed circuit fabrication is the metallization and electroplating of throughhole vias and blind via interconnections. In this article, Michael Carano writes about the strategies in optimizing acid copper electrodeposition processes for high-throwing power DC plating.

ENEPIG: The Plating Process

In this article, George Milad talks about the complexity of the ENEPIG process, how it works, its requirements and the critical parameters that must be maintained in the ENEPIG line. He writes that shops that have good engineering and documentation of the manufacturing process, coupled with a dedicated, experienced ENEPIG operator that is backed by a capable analytical laboratory, run defect-free ENEPIG day in and day out.

Precision Back-drilling High-Speed PCBs? No Problem!

Grant Christiansen of Schmoll Maschinen discusses the latest developments for high-speed back-drilling, particularly for the North American market. He stresses the importance of both software and machine capability, along with working closely with the customer.

The Future of Nickel in Nickel/Palladium/Gold Final Finishes

Final finishes can be subdivided into metallic and organic finishes. For the purpose of this article, the focus will be on the metallic finishes using the combinations of nickel (Ni) and/or palladium (Pd) and/or gold (Au). Variations on this theme are used extensively in the electronics market of today. The Ni/Pd/Au mutations are the inevitable result of technical requirement changes coupled with true and perceived acceptance within the industry.

An Interview with Gardien Group’s Jason Fraser

Gardien Group CEO Jason Fraser talks to Dan Beaulieu about some of the latest developments at the company, some of the technology trends driving the company's strategies, as well as provides his outlook as to where the PCB industry is headed.

Being Flexible in a Rigid World

With double-digit growth in the foreseeable future, flexible printed circuits (FPC), have found a tremendous niche as an enabler for various electronic applications. This trend is expected to drive the need to increase productivity while improving performance and reducing costs. Of course, in order to sell flex, one must tackle the unenviable task of metalizing these often difficult-to-plate materials.

Material Witness: How About that Technical Roadmap!

You may remember the movie "What About Bob?" If you do, you may recall the scene in which Bob (Bill Murray) confronts his psychiatrist (Richard Dreyfuss) and emotes, “I need! I need! I need! Gimme! Gimme! Gimme!” As I thought recently about some of the drivers that IPC and others have incorporated into their technical roadmaps, I feel a bit like that befuddled psychiatrist.

Next-Generation Ultra-Thin HDI PCB Manufacturing Challenges

This article describes the recent challenges and developments in manufacturing ALV HDI technology to meet the needs for high volume, robust, reliable, and cost competitive solutions for electronic packaging.

A Conversation (and Day) with Joe Fjelstad, Part 5

Our five-part interview series with Verdant Electronics Founder Joe Fjelstad wraps up with a look back at the point when Fjelstad’s career began focusing on circuit board technology, and he details his patented Occam process, and why this game-changing, disruptive technology has yet to become standard practice in the industry. Also explained: Why Fjelstad has been referred to as an “iconoclastic polemicist,” and how a Native American story he heard long ago has resonated throughout his career and life.

Design Considerations: Flexible Circuit vs. Traditional PCB

The tactics for flexible circuit design don’t differ much from that of traditional PCBs. All of the typical specifications still apply and we add a few more things that require special attention. Cover layers require bigger openings than traditional solder mask, trace directions matter in the flex areas and miters should be round instead of angular.


A Conversation (and Day) with Joe Fjelstad Part 4

We continue the conversation as it turns to the more technically focused area of disruptive technology. The method Joe has been demonstrating for years now is one which is poised to offer dramatic increases in electronic reliability while decreasing overall cost through the elimination of solder--a cornerstone concept of what has been coined as Occam technology.

A Conversation (and Day) with Joe Fjelstad Part 3

In Part 3 of this interview series, Fjelstad divulges his interesting entry into the electronics manufacturing industry, including a brief diversion as a restaurateur. In this portion of the interview, the pair was touring the Evergreen Aviation and Space Museum (home of the Spruce Goose) where Fjelstad spoke frankly about his experience in Vietnam and how it has shaped his view about war, which he shares. Finally, the importance of education was discussed, as well as India, and why the rest of the manufacturing world should be paying attention to them.

A Conversation (and Day) with Joe Fjelstad, Part 2

In Part 2 of this multi-part interview series, Verdant Electronics Founder and CEO Joe Fjelstad, and I-Connect007 Publisher Barry Matties discuss the future of what’s to come for the electronics industry, which, according to Fjelstad, has a lot to do with where we’ve just been in our quest for lead-free manufacturing. He also offers his view on the natural order of the evolution of personal political persuasions.

A Conversation (and Day) with Joe Fjelstad, Part 1

I-Connect007 Publisher Barry Matties and industry veteran Joe Fjelstad, CEO and founder of Verdant Electronics, met recently to spend a day together enjoying the Evergreen Aviation & Space Museum (home of the Spruce Goose), located in the Oregon community of McMinnville. Their conversation ebbed and flowed between a wide variety of topics, from the electronics industry, to political shenanigans and the “war against failure.” In Part 1 of this multi-part series, Fjelstad introduces his “war against failure” idea, and what went terribly wrong in the advent of lead-free manufacturing.

Building a Better Solder Mask & Legend - Layer by Layer

Camtek's VP of Functional Inkjet Technologies Dr. Boaz Nitzan talks with Guest Editor Kelly Dack about inkjet printing solder mask and legend. The technology uses the actual image of the board being processed, which means misregistration is eliminated.

Drill & Routing Process Experts

Ofer Ton, president of FASTechnologies talks with Guest Editor Steve Williams about drill room automation and the associated cost savings and productivity improvements.

Thermal Management for LED Lighting Applications

PCB substrates designed for thermal management have been around for a number of years, traditionally servicing power-related applications; however, there are now many more suppliers and substrates emerging to meet the growing demand from LED lighting products.

Growing Their Portfolio: Camtek’s One-Stop-Shop in Functional Inkjet Technology

I-Connect007 Publisher Barry Matties caught up with Dr. Boaz Nitzan, VP of Functional Inkjet Technologies at Camtek recently, and the two discussed the company’s expanding portfolio into inkjet printing system for PCB solder mask & legend. The new system is designed to replace conventional coating, drying, exposure and development processes currently used in PCB manufacturing.

Material Witness: Low-Flow Prepregs – Taming the Process

In this installment of Material Witness, Chet Guiles continues his discussion around Low-Flow Prepregs giving good advice about how to actually use these materials.

Inkjet Solder Mask Becomes a Practical Reality

Inkjet solder mask has for many years been a distant, near-impossible, goal for the PCB industry. Hopes have been raised on several occasions, only to fade when the ink either won’t jet or won’t pass end-user qualification. It is now evident that Taiyo’s many years of development in cooperation with equipment manufacturers have resulted in a successful formulation.


21 Years of Growth: A-Gas Electronic Materials Has 2020 Vision

Technical Editor Pete Starkey recently sat down for an interview with Jonathan Sellars, managing director of A-Gas Electronic Materials, at the company’s new facility in Rugby, UK. The company is a distributor of specialist chemicals and processes for semiconductor, PCB, electronic and industrial metal finishing, photovoltaic and advanced packaging technology industries. Sellars outlined the history of the company, its business philosophy and its future plans.

Rex Rozario: Investing in Graphic PLC Through Technology and Capacity

I-Connect007 Tech Editor Pete Starkey and Graphic PLC Group Chairman Rex Rozario caught up at IPC APEX EXPO 2015. Among other items, the two discussed Graphic’s current expansion in size and equipment, as well as what Starkey describes as the company’s history of making good decisions.

Reliability Testing and Statistics

Current industry views on reliability consist of customer requirements and results based on a variety of reliability testing procedures. However, there is still no consensus within the industry as to what each of the reliability test protocols prove and when each test protocol has to be used.

ESI’s New Gemstone Changing the Rules for Laser

I-Connect007 Publisher Barry Matties sat down at CPCA 2015 with ESI’s Mike Jennings, who explained the company’s newest addition: Gemstone, an ESI-designed and manufactured laser system, with 10,000 guaranteed hours, which is poised to change the rules in flex and other printed circuit processing. Jennings also discusses ESI’s new relationship with WKK, and an increased presence in China.

Global Machine and Management and First EIE Strike Important Relationship

I-Connect007 Publisher Barry Matties sat down with Carl Spitko, senior technical advisor at Global Machine and Maintenance, and Jean Paul Birraux, marketing and sales manager at First EIE, for a frank discussion about the working relationship the two companies have forged, the value it brings to their global customers, and what challenges North American fabricators are faced with.

Matrix Product Lines: Laminates and Drills

Fred reviews the Panasonic line of laminates, including high speed and flex materials. Hans discusses Jinzhou's new drill design for high aspect ratio drilling, as well as the opening of several high-tech re-pointing centers in North America.

How to Streamline PCB Thermal Design

Thermal issues with a PCB design are mostly determined during the component selection and layout phases. After this point, only remedial actions are possible if components are found to run too hot. John Parry discusses how addressing thermal issues early in PCB design, starting at the system or enclosure level, can help streamline the entire process.

Manz: A Total Process Solution

At the recent CPCA Show in China, I-Connect007 Publisher Barry Matties had a chance to speak with Alex Liu, the deputy general manager of the PCB business unit for Manz. Manz has focused on creating a process from direct imaging to wet processing. With more entrants into the direct imaging arena, Liu feels that this approach gives Manz and their customers an advantage.

HASLEN: A New High-Reliability Surface Finish for PCBs

The new surface finish HASLEN is a process that combines electroless nickel coating of PCBs with hot air solder levelling, very common processes used by most PCB manufacturers in the world. Solder levelling of electroless nickel is very difficult as very few solder fluxes are capable of removing the oxide layer from electroless nickel. This has been enabled by solder fluxes based on the novel liquids’ deep eutectic solvents.

Upping the U.S. Service Level of Chinese Manufacturing

Eddie Tang of Glory Faith and Yash Sutariya, president of Alpha Circuit discuss the unique business relationship between their companies. Alpha provides consulting and technical service in North America for GF, including rework and emergency manufacturing capability in its North American plants.


Catching Up with Standard Printed Circuits’ Bob Bormann

Standard Printed Circuits is located in the tiny town of Sherburne in Upstate New York which is equidistant from the cities of Syracuse, Utica and Binghamton where they do a lot of business.

Are There Advantages to Changing Your Registration System?

I-Connect007 Publisher Barry Matties recently had a conversation with DIS's Tony Faraci at IPC APEX EXPO 2015, to learn more about their pinless registration system. What was most interesting to Barry are the potential advantages a pinless system offers and if so, why the process has not been widely adopted.

Panasonic Meeting Market Needs with Higher-Performance Megtron 7

I-Connect Technical Editor Pete Starkey sat down with Panasonic’s Tony Senese and Tomoyuki Abe at IPC APEX EXPO 2015 in San Diego--and high-speed digital materials, particularly those with very low-loss characteristics, was the focus of their discussion. Also noted were the positive responses from chemical process suppliers, and the realistic length of a product development cycle.

Schmoll Keeping an Eye on the Future--and on LDI

In this interview, Thomas Kunz, who has been at the helm of Schmoll Maschinen as president since 1993, discusses the company’s lengthy history in mechanical engineering (more than 70 years!), current global scope, and what he sees as a steady progression in directions that make the most sense to customers, which includes laser direct imaging.​

Cadence’s Brad Griffin Digs Deep Into DDR

During DesignCon 2015, our roving reporter, Kelly Dack, stopped by to visit with Brad Griffen in the Cadence booth. What follows is their very interesting conversation that revolves around the evolution of DDR.
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