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Happy’s Essential Skills: Computer-Aided Manufacturing, Part 2 - Automation Examples

Semiconductor fabs like to avoid writing custom software to fit all of the idiosyncrasies of individual processing systems. So HP developed PC-10 to handle IC process equipment by separating it into general classes. SECS II was a mandatory prerequisite of the equipment before an interface to PC-10 could be developed.

Mil/Aero Markets: F-35 Declared Combat-Ready

Electronic subsystems are an integral part of all modern military fighter jets, with a substantial portion of the electronics supporting intelligence, surveillance and reconnaissance (ISR) systems, electro-optical/infrared (EO/IR), avionics, munitions and radar related subassemblies. This equates to a very high content of PCBs and SMT assembly requirements.

The Story Behind the News: Ventec’s IMS Manufacturing Capabilities in China Doubled

In this interview conducted at Ventec Europe’s headquarters in Leamington Spa, UK, Ventec Europe & USA COO Mark Goodwin sat down with I-Connect007 Technical Editor Pete Starkey to share the details of Ventec International Group’s $2 million equipment investment. With this injection of new equipment, Ventec doubles its IMS material manufacturing capacity in China.

Peter Lymn of Cemco: Adapting to the Market

Recently, I went on a tour of Cemco’s facility in Waterlooville, UK, where I met with longtime industry leader Peter Lymn to discuss Cemco’s roots in hot air solder leveling and the transitions Cemco has made in order to stay competitive.

Factors Affecting the Adhesion of Thin Film Copper on Polyimide

The use of copper foils laminated to polyimide (PI) as flexible printed circuit board precursor is a standard practice in the PCB industry. We have previously described an approach to very thin copper laminates of coating uniform layers of nano copper inks and converting them into conductive foils via photonic sintering with a multi-bulb conveyor system, which is consistent with roll-to-roll manufacturing.

All About Flex: FAQs on RoHS for Flex Circuits

In 2003, the European Union (EU) adopted a standard called the Restriction of Hazardous Substances (RoHS), which restricts the use of certain materials in electronic products and electronic equipment. The intent is to reduce the environmental impact of known hazardous materials and has driven changes in manufacturing processes and materials used to manufacture a wide array of electronic products.

The European Space Agency on Reliability

Stan Heltzel is a materials engineer working for the European Space Agency, and he is tasked with the job of procuring and qualifying PCBs that end up in satellites. I met with Stan at EIPC’s Summer Conference to discuss his presentation on qualifying a fabricator, his role at the ESA, and updating of space standards.

All About Flex: Soldering Flexible Circuits

The most common methods for component attachment on flexible circuits and rigid printed circuit boards involve soldering. The basic principles for soldering are the same for both flex and hard board, but soldering components to flexible circuits involves certain specific considerations vs. our rigid cousins.

Brooks' Bits: Your Traces Have Hot Spots!

The reasons for the temperature variation at high temperatures are not too hard to understand. There may be minor contamination under the trace or in the copper that accounts for it. Certainly, at higher temperatures (say above about 300°C) the board may begin to delaminate, severely disrupting its cooling characteristics. There may be small variations in trace width or thickness that help account for the delam, and these effects would be randomly distributed along the length of the trace.

Multiple Markets Merge for PCBs at H&T Global

While at the SMTA-Ohio expo I met Rob DiGiovanni, VP of sales and marketing with H&T Global, a printed circuit manufacturer based in Florida. I was attracted to the H&T booth by a large photo of an Army jeep. I wanted to learn what this particular photo had to do with PCBs, and Rob had a ready answer.


Trouble in Your Tank: Building Reliability into the PCB, Part 2

In Part 1 of this column on reliability, I presented the common PTH failures encountered when reliability is less than robust. PTH reliability is influenced by several factors including the quality of the PTH after drilling, plating thickness and plating distribution in the PTH. In this column, I will present additional factors, including the Coffin-Manson model in the context of understanding reliability failures.

Event Review: 7th Electronic Materials and Processes for Space Workshop

This year's Electronic Materials and Processes for Space Workshop discussed a wide range of technology issues and developments when it comes to PCB fabrication and assembly for space applications. From addressing reliability issues to dealing with cracks that may form during thermal cycling, to REACH regulations and their impact on space hardware, and tin whisker growths. Barrie Dunn provides the highlights.

Speak Up!

If you have paid any attention at all to our newsletters and other publications, you should have been aware of this month’s topic long before opening this magazine. We tried to reach… everybody, so we could get their thoughts on the industry for this issue.

Happy’s Essential Skills: Engineering Economics (ROI)

Engineering economics is fundamental in engineering, especially for manufacturing support. For simplicity, I am using the term here as a process engineer for printed circuit equipment and automation of production.

All About Flex: Considerations for Impedance Control in Flexible Circuits

Impedance can be thought of as a system’s opposition to alternating or pulsing electronic current. The unit of measurement is ohms, the same unit of measurement in a direct current system. However, the components for calculating impedance are much more complex than DC resistance.

All About Flex: Creating Via Holes in Flexible Laminates

Almost all double-sided and multilayer flexible circuits require through-holes or vias to enable an electrical connection between conductive layers. Creating a reliable plated via requires several critical steps. The first one is creating the through-hole.

Inside Spirit Circuits

I was recently treated to a factory tour with Spirit Circuits’ Managing Director Martin Randall, to learn more about their process line and how it has evolved over time. In the discussion following, I learned about Spirit’s involvement in the China market and how they’ve structured their business to handle quick turn prototypes locally and high volume abroad.

High-Throw Electroless Copper– New Opportunities for IC Substrates and HDI Manufacturing

The one constant in electronics manufacturing is change. Moore’s Law, which successfully predicted a rate of change at which transistor counts doubled on integrated circuits (ICs) at lower cost for decades, is ceding to be an appropriate prediction tool.

Using the Type 1 Gauge Study to Assess Measurement Capability

Measurement capability is a critical aspect of ensuring product quality, therefore a measurement system must be assessed before being used on products. Understanding how to assess measurement capability becomes critical. The Type 1 Gauge study is typically the first step in a measurement system analysis program. Type 1 Gauge parameters are explained, and a worked example using electroless nickel immersion gold (ENIG) is provided.

Made in Brazil: The Evolution and Revolution of Impedance Control in PCB Production

The PCB industry in Brazil has gone through several changes over the last decade. Our customers have been demanding better quality and higher-reliability products more than ever before, but few things have changed as much as impedance control. PCBs with impedance control requirements have become the engine of the market, and finding solutions to fit the customer’s needs is extremely challenging.


Viking Test Services: Much More than Test

Recently, 007 Technical Editor Pete Starkey and I toured Viking Test’s facility in Hants, UK where we met Managing Director Jake Kelly to learn about the history of the company, their recent involvement in the Indian PCB market, and what he thought of the EIPC Summer Conference.

Building Reliability into the PCB, Part 1

Sometimes there is confusion among PCB engineers and quality managers as to what constitutes reliability. Some may say that reliability refers to avoiding PTH failures such as corner cracks or interconnect defects. Then there are those who subscribe to a wider range of failure criteria to determine whether or not the final product is reliable for long-term service.

Testing Todd: Test & Measurement—The Case for Validation

Test and measurement (T&M) are terms that can strike fear into the most robust of minds. Many engineers create designs and products of the future with specific results predicted for performance.

Faster, More Accurate AOI is More Important than Ever

Among PCB manufacturers, there is a common perception that AOI has not changed much since it was introduced decades ago. Over the last few years, however, new advanced technologies have made AOI solutions smarter, faster and much more accurate. AOI system data have even been integrated with newly developed automatic 3D shaping tools.

Patty's Perspective: Delving into Test and Inspection

I’ve always been a wet processing person, if not always in a PCB shop, at least at heart. My undergraduate degree is in chemistry and I cut my teeth working on electroless copper processes (just a metaphor, mind you!). Testing, testing and more testing in R&D can be sooo boring and repetitive.

All About Flex: Taguchi Design of Experiments and Flexible Circuits

Reducing variability in a process, or a sequence of processes, can require a significant and structured amount of work and analysis. One must develop an understanding of critical variables and determine methods to control them. Statistically based experiments are often needed for proper analysis.

Catching up with Sunrise Electronics’ Ashok and Jigar Patel

I had been hearing about Sunrise Electronics for many years, so when Ashok asked me to come and see them for myself, I jumped at the chance. It was one of the most amazing plant tours that I’ve been on in a long time. I wanted to know more, so we sat down and had a chat.

Standard of Excellence: The Future is in Fine lines

The age of much finer lines and spaces is upon us. After years of slowly moving towards this technology our customers are now demanding that all of us provide them with fine lines and spaces. Our new trend in electronics is for denser and denser circuitry on smaller and smaller real estate.

The Newest Flex Shop in the U.S.

I-Connect007 sales team member Angela Alexander and I recently got a tour of Lenthor’s new Silicon Valley flex board shop and then sat down with President and CEO Mark Lencioni to discuss the new flex facility, the markets, management, and the future.

The State of the Electronic Design Automation Nation

We are the automation nation. We are the high-speed demons, the low-frequency artists, the mixed-signal designers that make up the electronic design automation industry. We spend most of our working lives behind software, delivered to our fingertips with the promise of making things easier, faster, better, and getting us to our deadlines ever faster.


RTW IPC APEX EXPO: Shengyi Technology to Increase Push in NA PCB Market

Jack Dong, executive vice president of Shengyi Technology Group, one of the biggest PCB laminate producers worldwide, speaks with I-Connect007 guest editor Dan Beaulieu about a variety of issues, including the company’s activities in the United States, their R&D capabilities, and their receiving the IPC Peter Sarmanian Corporate Recognition Award.

All About Flex: Imaging Methods for Etch Resist, Part 3: LDI

When LDI technology was first introduced around 20 years ago, throughput was an issue. LDI was often restricted to low volume or prototype runs. Subsequent advances in equipment as well as faster acting photoresist have made it practical for high volume circuit fabrication.

RTW IPC APEX EXPO: Panasonic Discusses Trends Driving Innovations in Copper

Tony Senese, business development manager for Panasonic Electronic Materials Center, talks with I-Connect007 guest editor Steve Williams about the laminate and circuit board business, and how developments in the raw materials side could make a big difference as designers push further and further to higher and higher frequencies.

RTW IPC APEX EXPO: Matrix Supply Partners Talk Advances in PCB Drill, Copper Foil Technologies

I-Connect007 guest editor Dick Crowe speaks with Hans Vandervelde, product manager of carbide tools at Perfect Point, and Shane Stewart, product manager at Advanced Copper Foils about advancements in drill technology and in copper foils.

All About Flex: Common Flex Circuit Surface Finish Requirements

Copper is a unique metal and has been proven with the test of time in an incredible array of printed circuit and electrical wiring applications. It is highly conductive, has good flexibility properties, can withstand high temperatures and has good chemical resistance. Copper is also is in abundant supply and is fairly inexpensive.

EIPC Summer Conference 2016, Day 2: Strategies to Maintain Profitability in the European PCB Industry

Delegates awoke to a gloomy Scottish morning on the second day of the EIPC Summer Conference 2016. One or two who maybe overindulged in the whisky on the previous evening had some difficulty in finding time for breakfast before the conference proceedings, but the atmosphere in the meeting room was brighter than the weather outside, as Professor Martin Goosey introduced the day’s programme.

All About Flex: Plating Process Options for Flexible Circuits

Plating copper through-holes or vias is a requirement for double-sided and multilayer circuits. In a previous column we discussed the plating process; specifically copper seed coating using electroless copper and Shadow plating, which is then followed with an electroplating process.

EIPC Summer Conference 2016, Day 1: Strategies to Maintain Profitability in the European PCB Industry

Resplendent in the kilt, EIPC chairman Alun Morgan welcomed a large and enthusiastic gathering of printed circuit professionals from all over Europe and as far afield as the USA, Canada and Russia, to the EIPC Summer Conference 2016 in Edinburgh, Scotland's cosmopolitan capital city.

Institute of Circuit Technology Annual Symposium

On June 1, Technical Director Bill Wilkie introduced the 42nd Annual Symposium of the Institute of Circuit Technology, at the Motorcycle Museum in Birmingham, UK, commenting upon the success of the recent Foundation Course and acknowledging the sterling efforts of his course tutors, although recognising that some of his longest-standing experts were now retiring.

Trouble in Your Tank: Primary Imaging for Pattern Plating, Part 2—Development

The proper development of the primary photoresist is critical to the overall success of the imaging process and in turn the processes that follow—either etching to form innerlayers or the electroplating processes on outer layers. In this step, the unexposed photoresist (after resist lamination and exposure) is washed away via the developing process.


Design Automation Tools, Today and in the Future

Kelly Dack has been designing PCBs for over three decades, at OEMs of all kinds. Now a PCB designer with a Washington state contract manufacturer, Kelly enjoys waxing philosophic about PCB design and design automation in general. I asked Kelly about the direction EDA tools are headed, and whether he’d like to see more control, or more automation in his PCB design tools.

New Management and Strategies at eSurface

At the recent Geek-A-Palooza, I spoke with Alex Richardson and Rick McCann of eSurface Technologies, to learn about the condition of the company, their new semi-additive approach, and a couple of big announcements.

Global Technology Development: HDP User Group European Meeting 2016

Delighted and honoured to be invited again to attend the open session of the High Density Packaging User Group (HDPUG) European Meeting, I made my way to the picturesque Grand Duchy of Luxembourg, a tiny principality bordered by Belgium, France and Germany, and ranked among the world's top-three nations in both wealth and wine consumption, to learn about the latest in collaborative research and development by member companies engaged in the manufacture of products utilising high-density electronic packages.

MACFEST—Manufacturing Advanced Coatings for Future Electronic Systems

Now in its second year, MACFEST is a collaborative research project involving partners A-Gas Electronic Materials, C-Tech Innovation, MTG Research, the Institute of Circuit Technology, the University of Leicester and Merlin Circuit Technology.

Designers Notebook: Flexible and Rigid-Flex Circuit Design Principles, Part 6

The designer is generally under pressure to release the documentation and get the flexible circuit into production. There is, however, a great deal at risk. Setting up for medium-to-high volume manufacturing requires significant physical and monetary resources. To avoid potential heat from management, the designer must insist on prototyping the product and a thorough design review prior to release.

Standard of Excellence: LED and Metal-Backed Technology—Today and in the Future

Probably one of the hottest, or should I say coolest, technologies today is LED. I would also venture to say it is one of the fastest growing as well. All you have to do is look around you can see evidence of this everywhere from holiday lights in your home and Jumbotrons at sports arenas, to highway and business signage. The lighting industry is now dominated by LED technology.

Flex Talk: Inaugural West Coast Geek-A-Palooza a Fun-filled Success!

Geek-A-Palooza kicked off the 2016 schedule May 12 in Irvine, California. Historically, Geek-A-Palooza has been held in Minneapolis but is expanding this year to include Orange County and Boston as well.

BOOK REVIEW: Printed Circuits Handbook, Seventh Edition, 2016 (McGraw-Hill)

The Printed Circuits Handbook has been a classic reference to the industry for many years, and the new edition will assure its place for years to come. The 7th Edition features 71 chapters, four more than the last edition, structured in 12 parts, and authored by 38 contributors—a list of accomplished authors that could double as a who’s who in the world of circuit boards.

All About Flex: Imaging Methods for Etch Resist, Part 2: Photoimaging

This is the second of three columns describing typical methods for creating an etch resist for fabrication of printed circuits. Photoresist can come in the form of a liquid that gets coated on the substrate or as a dry film that is laminated. Liquid and dry film resist can be positive-acting or negative-acting.

PE on 3D objects

I recently sat down with Mike O’Reilly of Optomec to discuss 3D printing onto existing substrates and small polymer-based additive manufacturing pieces and how that impacts PCB manufacturing. Mike also discuss the benefits of printing with conductive epoxies versus the traditional solder process, and where Optomec fits in to the burgeoning 3D market, going forward.


Beyond FR-4: High Performance Materials for Advanced Designs, Part 2

In Part One we covered basic FR-4 and variants that have been used in the commercial and military market for the past few decades, but in this column we will delve into the newer materials that target a specific application and/or market segment.

Working With Circuit Design Engineers

Until the late 1980s, many PC board designers were converted technicians, mechanical designers, and artists who learned to read a schematic and mastered artwork taping. The EEs would often share their opinions, but you could listen to them or ignore them and the circuit would likely function either way. This era created some tension between designers and their EE counterparts, because they completely ignored each other’s ideas.

Long-Term Thermal Reliability of PCB Materials

This paper describes the purpose, methodology, and results to date of thermal endurance testing performed at Amphenol Printed Circuit Board Technology in Nashua, NH. The intent of this thermal aging testing is to establish longterm reliability data for PWB materials for use in applications that require 20+ years (100,000+ hours) of operational life under different thermal conditions.

A Process Engineer's Guide to Effectively Troubleshooting PWB Defects

The printed wiring board fabrication process is an intricate maze of interrelated steps, both chemical and mechanical. A thorough understanding of each of the process steps is critical in minimizing or eliminating non-conforming defects—the ones that cost the fabricator money and can lead to lost customers.

Jason Chung Offers the Asian Perspective and Explains Ventec’s Aim to Differentiate

I spent a few minutes with Ventec’s Jason Chung whilst attending CPCA recently, where I had the opportunity to absorb his views on the current China market, the importance of setting yourself apart in a tight economy, and the value of bringing stability to customers.

The Future of Computer-Integrated Manufacturing in the PCB Industry

Computer-integrated manufacturing is already a proven reality in the PCB industry for those prepared to make the investment, and results in improved quality and reduced costs. The biggest barrier to its general adoption is the reluctance of some equipment manufacturers to communicate in a uniform data format.

Beyond FR-4: High-Performance Materials for Advanced Designs, Part 1

In the past 40-plus years of PCB manufacturing, the primary material of choice has overwhelmingly been e-glass supported FR-4 resin laminates. This is due to the excellent dimensional stability and reasonably acceptable thermal performance (based on glass transition temperature [Tg] and decomposition temperature [Td]). In general, these materials exhibit impressive performance and excellent cost for a wide range of applications.

Weiner’s World

3D printing, China’s SMT equipment and robotics markets, IPC’s mandate, counterfeiters, and Taiwan PCB makers’ shift to automotive electronics—Gene Weiner talks about these things and more in this new article.

Orbotech’s Latest Technology at IPC APEX EXPO

Orbotech presented their latest new technologies at IPC APEX EXPO 2016. The Nuvogo 1000 is a higher power version of their multi wavelength direct imaging machine, as well as their new automated optical shaping technology which can add copper deposition to an otherwise defective PCB. I met with Orbotech’s Micha Perlman in their booth on the show floor, to learn more.

All About Flex: Imaging Methods for Etch Resist, Part 1

Imaging is a major process step in creating a copper circuit or flexible PCB. In single-sided circuit fabrication, the imaging process creates the resist pattern that protects the copper from the etchant. It is critical that this pattern precisely define the circuit traces, as issues with imaging will transfer to the subsequent processes.


Koen Hollevoet Explains Rogers' New PEEK-based Material for Extreme Temps

Rogers has been developing a new material called XT/duroid laminate, which is based on polyether ether ketone (PEEK) material and can withstand some of the harshest temperatures and environments. I met with Koen Hollevoet, Business Development Manager at Rogers Corporation, at IPC APEX EXPO 2016 to further discuss this material and learn how it might benefit the PCB market.

IEC: Celebrating 50 Years in Business

I caught up with Shawn Stone of IEC recently, to discuss plating, laminates, printed electronics and IEC’s many strategic alliances, including their most recent agreement with ITEQ to distribute their copper-clad laminate line throughout North America. This alliance will give IEC, a company his father started more than 50 years ago, its first North American footprint.

Ventec International Group Expands North American Focus

Ventec International Group is looking to expand their U.S. operations, and they’ve begun this process by bringing Chris Alessio on board as VP of sales and operations of Ventec USA. I met with Chris and Ventec USA President Jack Pattie at IPC APEX EXPO 2016 to discuss their approach and possible opportunities for the North American laminate market.

Rogers: 'To PIM-test Our Material, You Have to Build a Circuit'

Passive intermodulation (PIM) is a circuit anomaly that has been occurring in cellular base station antennas, causing tremendous frustration and cost to antenna OEMs. As the supplier of the materials being used by these OEMs, Rogers Corp., and more specifically, Product Manager Tony Mattingly, must come up with a solution.

Happy’s Essential Skills: Using Web Resources

The World Wide Web is a real boon to information retrieval. The key is getting to relevant information and not being overwhelmed by the sheer number of references. When confronted with a process problem, the urgency of a solution requires that you know how to use Web resources expeditiously.

Orbotech’s Gaby Waisman: 'The Future is Digital'

I sat down with Orbotech President Gaby Waisman at CPCA in Shanghai recently, and he offered a comprehensive explanation of why digitalization is truly the future, especially with regard to increasing throughputs. We also discussed Orbotech’s company vision and products, as well as its role in “helping to drive the industry into fully digitalized imaging technology.”

LPKF Launches New Laser Drilling System for Flex Printed Circuits

At Laser World of Photonics Exhibition in Shanghai recently, I had a chance to speak with Florian Roick, strategic product manager with LPKF. The company is celebrating a big anniversary this year with the launch of a laser drilling machine to support the specific requirements of the flexible circuit industry.

Steinberger Talks PAM4, the Next Generation of Modulation

I recently interviewed our old friend Michael Steinberger, SiSoft’s lead architect for serial channel products. Steinberger is always a great interview; he breaks down complex signal integrity simulation technology in ways that are simple and often humorous. Steinberger sat down and discussed a paper he presented at DesignCon, and some of the challenges his customers are facing.

All About Flex: Why Copper is Ideal for Flexible Circuitry

Copper is the second-most conductive metal (in pure form). The copper used on flexible circuits can be formed by a number of methods such as electro-deposition (ED), rolling/annealing, or a combination of the two. The conductivity of copper by volume on a flexible circuit is not exactly the same as pure copper, but it is quite close.

The ESI Solution: High-Throughput Roll-to-Roll UV Laser Drilling of Thin, Flex Materials

ESI’s Flex Product Manager, Patrick Riechel, speaks with I-Connect007's Pete Starkey at the recent CPCA event last month in Shanghai. Among the topics covered: How ESI addresses issues associated with machining roll-to-roll flex circuits, laser technology, and more.


Morgan and Starkey on CPCA 2016, Automation, and the Upcoming ECWC14

On the last day of CPCA in Shanghai recently, I was delighted to catch up with my friend and industry colleague, EIPC Chairman Alun Morgan, for a discussion on the show we were both currently attending, as well as the upcoming 14th Electronics Circuits World Convention (ECWC14), to be held in April 2017, in Korea.

Martin Cotton Explains Ventec’s Plan for Growth

I always enjoy talking to Martin Cotton, global director of OEM technology and marketing for Ventec and a longtime PCB designer. I ran into Martin at DesignCon and asked him to discuss Ventec’s plans for the future and how he figured into the equation.

Williams and Beaulieu: Board Shops and CMs Must Communicate Better

Two well-known consultants in the PCB industry, Dan Beaulieu and Steve Williams, have joined forces to try to help close the divide between CMs and board shops. I recently sat down with them at IPC APEX EXPO 2016 to better learn about their strategy for bringing the two sides together.

Dan Beaulieu's 'It’s Only Common Sense' Celebrates 500th Column

“We’d like to congratulate Dan on his 500th column,” said Publisher Barry Matties. “Dan is a strong advocate for smart business. We thank Dan and look forward to 500 more columns, and you can be sure that Dan will keep stirring the pot.”

PhiChem Open House a Success!

Delighted to be invited to an exclusive preview of the new PhiChem global headquarters and R&D centre in Shanghai’s Baoshan suburb, I joined the VIP group assembled at the PhiChem booth at the CPCA show, made welcome by PhiChem President Dr. Jin Zhang.
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