Category Archives: Hot Wires

Mike Buetow’s thoughts on the industry

An Antidote to a Complex Environment

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Years ago, ahead of a US election, I used this space to pen an open letter to the new president. I wrote that the race for office was heated and intense, but the winner should put aside any ill feelings and work toward the betterment of all Americans.

The column was timed to hit readers’ desks in November, just after the election results were announced. Magazine deadlines being what they were, of course, I wrote it in early October – more than four weeks prior to election day. In short, I submitted it to the printer having no clue who was actually going to win.

More than a few readers didn’t catch that little nuance, and they filled my inbox with screeds both positive and negative about the outcome, projecting their own biases on my musings and utterly missing the point I was trying to make about leadership.

Since then, I’ve stayed away – far away – from anything that even hints of politics, sensing it’s too charged a subject to use even as a metaphor for a larger point.

So, when an industry friend whom I respect more than he will ever know suggested I write an editorial about electronics companies requiring vaccination, and, in his words, “come out swinging in favor of it,” my first reaction was indifference.

Then we conducted a survey of US readers and found just under 60% plan to attend face-to-face events this year, and the top reason for staying home is, of course, Covid-19. That’s no way to get business done, not when there’s a perfectly good vaccine – more than one, actually – available and in most cases free.

As Covid-19 cases increase across the nation, primarily with unvaccinated persons, it’s hard not to be frustrated at the current state of the world. This is a largely preventable disease, , provided we choose to prevent it.

Although I will probably pay dearly for using this space as a soapbox for something that goes beyond electronics engineering, I can’t keep quiet knowing just how badly it’s affecting our industry, not to mention our world.

With that, I strongly encourage all companies – not just US-based ones – to mandate vaccinations for all workers, full-time, part-time and contract-based. Any visitors to their offices should be required to show proof of vaccination too. 

I realize that the unvaccinated have their reasons, and I’m not going to argue with them. But let it be known I wholly disagree with their stance. We must ensure we are doing everything we can to protect the health of our employees and each other. It’s time to take a stand.

Would-Be Foxconn Beneficiaries: Always A Bridesmaid

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The University of Wisconsin this week became the latest would-be benefactor of Foxconn’s pretend largesse to acknowledge that it has been, in fact, jilted.

A UW-Madison response to a public records request by the Wisconsin State Journal on Monday shows the Taiwanese electronics company gave $700,000 in the first year of a five-year agreement and no money in the second or third year. The amount to date represents less than 1% of the original commitment.

“I am not at this point expecting to receive that gift,” Blank said in an interview with the State Journal editorial board last week. “It’d be nice. I think it’s unlikely.”

— UW Chancellor Rebecca Blank

UW should feel no embarrassment at falling for the Taiwanese ODM’s promises of riches — in this case, $100 million in grants. The list of brides left standing at the altar by Foxconn is long and global.

Perhaps one day, when Foxconn comes knocking, the prospective bride will demand the ring — and the cash — upfront.

Somehow, however, I tend to doubt it.

From Boards to Brews

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In case you were wondering whatever happened to IBM’s once sprawling campuses in Endicott, East Fishkill, and other western New York towns, where Big Blue made everything from semiconductors to laminates to circuit boards, the New York Times has the story.

Spoiler alert: Like so many other old mill buildings, breweries, among other businesses, are moving in.

New Semi Group Needs to Talk Bigger Goals than Just Subsidies

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“You never want a serious crisis to go to waste. And what I mean by that is an opportunity to do things that you think you could not do before.” ? Rahm Emanuel

Indeed.

In the wake of the latest components inventory crisis, the lobbyists are out in full-force trolling for subsidies for the semiconductor industry.

And if the usual suspects weren’t enough, many of the blue chip (no pun intended) companies that make up the Semiconductor Industry Association and SEMI this week launched yet another industry organization, the Semiconductors in America Coalition. the group supports the allocation of $50 billion by the US government (read: taxpayers) to fund advanced semiconductor manufacturing. The announcement came at almost the same time – coincidence? – IBM reported successful development of 2nm process using a 300mm wafer.

That prompted a longtime friend and industry observer to suggest, “rather than spending money directly, the US and state governments offer the same deal to the supply chain as a whole as do the South Korean, Chinese, and Taiwanese governments. A holistic response is needed. Maybe a carrot to keep 2nm tech onshore.

“We need to bring a number of critical technologies back; chips, packaging, HDI, transposers and even certain components,” he went on.

“Apple has been using black solder mask for decades now to prevent piracy and it has worked. Their keiritsu approach works. Keeping key technologies within the kimono, as the Japanese say, and bringing those key industrial components back, would help to reaffirm North American industrial security and protect our supply chain.”

I can see where he’s coming from, but Apple really doesn’t have the scale of the other communications and computing OEMs; it’s share of the worldwide smartphone market is about 15%, and it has only 8% of the PC market. It’s probably not the model to emulate in that regard. More interesting is its recent decision to go full bore with its own M1 processor, which is made by TMSC.

I know Samsung and TMSC are also working on (close to?) 2nm. I don’t think IBM alone has the scale anymore to be a difference-maker, which is where the other fabs need to step up. They all smell an opportunity, and it’s hard to blame them for trying to get their hands on “free” money.

What I haven’t seen is an overarching policy proposed by the various trade groups/lobbyists promoting onshore wafer production. It seems more piecemeal to me, with new associations stacked atop legacy ones, all promoting the same message (subsidies) but with no promise of tangible returns.

I’m not against government subsidies for critical tech – and semi is absolutely one of those – but it seems to me they should start with a goal and then fill in the rest (processes, funding, etc.).

Sans a clear objective, the game plan will not only be expensive and a hard sell, but doomed to break down.

US Semiconductor Independence Comes a Little Late for EI

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“Rebuilding the US packaging industry would not only insulate chip companies and their customers from political risk, it could also help them break free of the long cycles involved in creating new chips, said Tony Levi, a professor of electrical and computer engineering at the University of Southern California.”

Reading that, I can’t help but think of Endicott Interconnect Technology and what might have been.

It must have been 15 years ago when I toured EI, the one-time IBM campus where bare board fabrication, assembly and chip packaging all took place. So self-contained was the operation, in fact, they had their own laminate treater.

EI was where the HyperBGA and CoreEZ high-speed flip-chip BGA packages were invented, as well as custom laminates for semiconductor packages. The engineering talent was second to none. They really could do it all.

What they never mastered, however, was the right scale. Agreements to license their products went nowhere. The layout complicated process flow: I remember having to duck to avoid banging my head as I would my way through the partially subterranean assembly facility. Dwindling revenues coupled with the high cost of doing business in New York ultimately scuttled the company, and the assets were sold to TTM in 2019.

With today’s emphasis from President Biden on down on rebuilding the US semiconductor industry, however, one can’t help but wonder whether EI was the right idea, just 20 years ahead of its time.

The Labor Honeypot

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Plexus, annually among the highest-ranking performers in the CIRCUITS ASSEMBLY Top 50 EMS Companies list, yesterday announced a new plant to be built in Thailand.

In its press release, the company touted the facility as an example of “Plexus’ commitment to Environment, Social & Governance (ESG) best practices.” And on the surface, much of this sounds great: green building initiatives, an exterior green zone for employees, and other features.

But the Plexus Code of Conduct goes further than just green initiatives. There’s talk — lots of talk — about corporate and individual ethics, core values and leadership behaviors. And ESG criteria are more than green initiatives: the “social” component is tied to standards for managing relationships with employees, suppliers, customers, and the communities where a company operates.

From the Plexus website: plexus.com/en-us/corporate-social-responsibility

Plexus specifically cites its adherence to the Universal Declaration of Human Rights, a proclamation by the United Nations General Assembly in 1948, which in its preamble notes history’s uncomfortable past with free speech:

Whereas disregard and contempt for human rights have resulted in barbarous acts which have outraged the conscience of mankind, and the advent of a world in which human beings shall enjoy freedom of speech and belief and freedom from fear and want has been proclaimed as the highest aspiration of the common people

And commits its signers to the following:

Everyone has the right to freedom of thought, conscience and religion; this right includes freedom to change his religion or belief, and freedom, either alone or in community with others and in public or private, to manifest his religion or belief in teaching, practice, worship and observance.

– Universal Declaration of human rights, Article 18

And Thailand is complex. It routinely jails citizens, including minors, for speaking out. Defaming the monarchy is punishable by up to 15 years in prison per incident. God save the king, but don’t badmouth him.

This is going to sound like I’m picking on Plexus. In fact, this is a problem facing numerous multinationals. One thing they have in common is membership in an official sounding organization called the Responsible Business Alliance (RBA). Formerly the Electronics Industry Citizenship Coalition (EICC), RBA is a group of companies that “share a commitment to ensure working conditions in the electronics supply chain are safe, that workers are treated with respect and dignity, and that business operations are environmentally responsible.”

Fancy words aside, the RBA is a crock. The companies that make up its membership include Apple, Amazon, Foxconn, Pegatron, Wistron and other OEMs and ODMs that are routinely singled out by NGOs, in social media and the mainstream media for disregarding worker health and local labor laws. In my view, the RBA is used as a shield: listen to what we say, don’t look at what we do.

I can’t argue with Plexus’ decision to locate factories where the labor is skilled and generally cheap. But I can’t rationalize how Plexus’ lofty goals of good corporate citizenship fit with Thailand’s pattern of state-sponsored oppression.

Just as we thought the bloom was off the rose in China. Will the EMS industry trade one labor honeypot for another?

The Miracle of Soldering

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Folks,

Imagine you are Guglielmo Marconi, and you opened the first radio factory in Chelmsford England in 1912. Using Lee De Forest’s 1906 invention, the triode vacuum tube, your early radios needed a way to connect the various electronic components together. Enter soldering. Soldering is the most cost effective and reliable, some might say only, way to connect electronic components together. It has been since the birth of electronics with the radio.

It is interesting to ponder some of the effects that the radio had on civilization and society. Before the radio, most of the United States was disconnected. People in California didn’t know what was happening in New York in anything like real time. There was also no national entertainment. Following early broadcasts in the 1920s, radio was a staple of most American homes by the 1930s. Families would gather around the radio after dinner to listen to the news and comedy, drama, music, etc. This golden age of radio lasted from the 1920s through the 1950s until radio was supplanted by television. See Figure 1.

Figure 1. A young girl listens to the radio in the 1930s. It would be difficult to overstate the impact of radio…all enabled by soldering.

Electronic soldering, in a sense, is a miracle of technology. It enables connecting copper to copper at a temperature of less than 230°C. The connection is reversible, conducts electricity well, and is mechanically strong. This soldering temperature is crucial for electronics, as the printed wiring boards and component packages contain polymer materials that cannot withstand temperatures much higher than 230°C. This low soldering temperature is especially impressive when considering that to bond copper to copper without solder would require temperatures near that of the melting point of copper or 1085°C.

To work its magic, solder forms intermetallics with copper. See Figure 2. The intermetallic closest to the copper is rich in Cu3Sn, and that closest to the solder is rich in Cu6Sn5.

Figure 2. A schematic cross section of a component lead soldered to a PWB pad. 

It is important that the soldering bond is reworkable. The electronics industry would have difficulty being profitable without this important feature of soldering as most assembly processes have some yield loss that requires rework.

So, the next time you use your smartphone, PC, or TV, remember it wouldn’t be possible without the miracle of soldering.

Cheers,

Dr. Ron

Figure 1 source: By Franklin D. Roosevelt Library Public Domain Photographs – This media is available in the holdings of the National Archives and Records Administration, cataloged under the National Archives Identifier (NAID) 195876., Public Domain, https://commons.wikimedia.org/w/index.php?curid=2151524


Passive Demand Anything But Passive

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The component distributor TTI has released its first quarter market report and the outlook is ominous: 28 passive electronic component types have increasing lead times, while 24 saw price increases. Tantalum molded chip cap lead times are now up to 32 weeks.

Lead times for most connectors remain stable, although prices are climbing. The exception is TE, whose lead times are climbing.

Memory supplies are also generally getting tighter.

With some component manufacturers now requesting 18 month forecasts, the risk for double-bookings is on the rise. Beware! Someone always gets stuck holding the bag of chips.

https://www.futureelectronics.com/resources/market-conditions-report/memory

Back in Person

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The Covid-19 vaccine rollout has begun and we can’t wait to get back to seeing old and new friends in person.

To that end, I want to call your attention to the return of PCB East to the Boston area in June.

We will head to Marlboro, MA, for some 55 hours of training across three days (June 15-17) of printed circuit board engineering training. There, SI expert Lee Ritchey will have a couple of tutorials: Printed Circuit Board Stackup Design for High Performance Products, and also Power Delivery System Design.

We also will offer two full days of Rick Hartley, including a brand new talk titled, “PC Board Design for Optimum Fabrication and Assembly.” As Rick notes, Happy Holden has presented at PCB West a few times where he’s explained how fabricators determine pricing for bare boards and how EMS suppliers determine pricing for PCB assemblies. Happy shares what he calls a “Fab and Assembly Report Card,” which is how manufacturers assess and weight the variables that drive cost.

So, for instance, as most readers know, board size is a major cost driver. But, as Rick explains, what most designers don’t know is that aspect ratio of length to width also has a major impact. Two boards with the same number of layers and same number of sq. inches but with a difference in their respective aspect ratios – say one is much longer than wide – will push up the bare board cost. Same with assembly, which has even more cost drivers than does fab. Rick is going to do is discuss these major cost drivers.

Rick also told me that at PCB West he had discussions during the chat sessions with some of the bare board fabricators in attendance. One of them said (I’m paraphrasing here), “At any point in time as many as 90% of our jobs are on-hold, waiting for correction or clarity from the customer, so we can proceed.” In Rick’s opinion, designers are flying blind when it comes to many the cost drivers and what suppliers need at both the bare board and assembly level, hence the reason for so many delayed PCBs. These delays also add cost.

What Rick wants to do is to highlight and talk about the factors that Really drive up cost, like board size and aspect ratio, layer count, Z-axis uniformity, copper balance, etc.

And Susy Webb will have brand new, two-day tutorial for design engineers, “A Comprehensive Guide to PCB Design Necessities.” Her class will feature an overview of the entire process of board design, from start to finish, addressing the EE designing their own boards or the new designer who needs to thoroughly understand all the steps and processes. She’ll cover everything from the electronics and physics involved, how the rise time and controlling the energy fields impact the signals on the board, choosing parts types, schematics and signal and constraint issues, mechanical issues, and so on. Susy is also doing an all-day webinar.

We are looking forward to these any other presentations, and also to the exhibits on Jun. 16. Registration is now open, so visit pcbeast.com for details.