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How and When the Chip Shortage Will End, in 4 Charts

Fabs using older process nodes are the key

4 min read
A worker fuels a Volkswagen Golf 8 automobile on the assembly line.
At the beginning of the COVID-19 pandemic, the auto industry cut back on production, thereby cutting back on the chips that operate their cars. Now as chips are in high demand—for cars and many other electronics—chipmakers are facing challenges to fulfill their backlog of orders.
Liesa Johannssen-Koppitz/Bloomberg/Getty Images

Editor’s note: The chip shortage continues in 2022. Our recent coverage on the topic includes “5 Ways the Chip Shortage Is Rewiring Tech” and “These 5 Charts Help Demystify the Global Chip Shortage.”

Historians will probably spend decades picking apart the consequences of the COVID-19 epidemic. But the shortage of chips that it's caused will be long over by then. A variety of analysts agree that the most problematic shortages will begin to ease in the third or fourth quarter of 2021, though it could take much of 2022 for the resulting chips to work their way through the supply chain to products. The supply relief will not be coming from the big, national investments in the works right now by South Korea, the United States, and Europe but from older chip fabs and foundries running processes far from the cutting edge and on comparatively small silicon wafers.

The auto industry is a relatively small chip end-user, but it\u2019s growing fast.The auto industry is a relatively small chip end-user, but it's growing fast.IDC

Before we get into how the shortage will end, it's worth summing up how it began. With panic, lockdowns, and general uncertainty rolling across the globe, automakers cancelled orders. However, those conditions meant a big fraction of the workforce recreated the office at home, purchasing computers, monitors, and other equipment. At the same time entire school systems switched to virtual learning via laptops and tablets. And more time at home also meant more spending on home entertainment, such as TVs and game consoles. These, the 5G rollout, and continued growth in cloud computing quickly hoovered up the capacity automakers had unceremoniously freed. By the time car makers realized people still wanted to buy their goods they found themselves at the back of the line for the chips they needed.

At $39.5 billion, the auto industry makes up less than 9 percent of chip demand by revenue, according to market research firm IDC. That figure is set to increase by about 10 percent per year to 2025. However, the auto industry— which employs more than 10 million people globally— is something both consumers and politicians are acutely sensitive to, especially in the United States and Europe.

Chips for the automotive sector are made using processes intended to meet safety criteria that are different from those meant for other industries. But they are still fabricated on the same production lines as the analog ICs, power management chips, display drivers, microcontrollers, and sensors that go in everything else. “The common denominator is the process technology is 40 nanometers and older," says Mario Morales, vice president, enabling technologies and semiconductors at IDC.

This chip manufacturing technology was last cutting edge 15 years ago or earlier, lines producing chips at these old nodes represent a full 54 percent of installed capacity, according to IDC. Today these old nodes are typically used on 200-mm wafers of silicon. To reduce cost, the industry began moving to 300-mm wafers in 2000, but much of the old 200-mm infrastructure continued and even expanded.

Despite the auto industry's desperation, there's no great rush to build new 200-mm fabs. “The return on investment just isn't there," says Morales. What's more there are already many legacy-node plants in China that are not operating efficiently right now, but “at some point, they will," he says, further reducing the incentive to build new fabs. According to the chip manufacturing equipment industry association SEMI, the number of 200-mm fabs will go from 212 in 2020 to 222 in 2022, about half the expected increase of the more profitable 300-mm fabs.

chart of number of 200 mm fabsThere are few new 200-mm fabs...

capital spending on 200 mm fabs...but companies are investing in equipping the old ones.

More than 40 companies will increase capacity by more than 750,000 wafers-per-month from the beginning of 2020 to the end of 2022. The long-term trend to the end of 2024 is for a 17 percent increase in capacity for 200-mm facilities. Spending on equipment for these fabs is set to rise to $4.6 billion in 2021 after crossing the $3-billion mark in 2020 for the first time in years, SEMI says. But then spending will drop back to $4 billion in 2022. In comparison, spending to equip 300-mm fabs is expected to hit $78-billion in 2021.

The chip shortage is happening simultaneously with national and regional efforts to boost advanced logic chip manufacturing. South Korea announced a push worth $450-billion over ten years, the United States is pushing legislation worth $52 billion, and the EU could plow up to $160-billion into its semiconductor sector. Chipmakers were already on a spending spree. Globally, capital equipment for semiconductor production grew 56 percent year-on-year through April 2021, according to SEMI. SEMI's 3 June 2021 World Fab Forecast indicates that 10 new 300-mm fabs will start operation in 2021 with 14 more coming up in 2022.

“The push for building IC capacity around the world will certainly drive fab investment of the current decade to a new high," says C hristian Gregor Dieseldorff, senior principal for semiconductors at SEMI. “We expect to see record spending and more new fab announcements in the next few years."

One potential hiccup on the road to ending the shortage is that some of the skyrocketing demand appears to be from customers that are double-ordering to bulk up on inventory, says Jim Feldhan, president of Semico Research. “I don't know of any product that needs twice the amount of analog" as the year before, he says. But manufacturers “don't want a 12-cent part to hold up a 4K television," so they're stocking up.

The auto industry needs to do more than just stock up, according to Bharat Kapoor, lead partner, Americas, in the high-tech practice of global strategy and management consulting firm, Kearney. To keep future shortages at bay, the chip industry and auto executives need a more direct connection going forward so signals about supply and demand are clearer, he says.

This post was corrected on 30 June to clarify historic 200-mm fab equipment spending.

This article appears in the August 2021 print issue as “How and When the Chip Shortage Will End."

The Conversation (3)

I see no shortage of laptops and tablets. I see no shortage of Japanese and Korean cars. I still see lack of inventory on used car lots. Inventory is not yet in balance, but we should soon see a flip and there will be too much inventory due to the double ordering (not well explained-it happens when the end user of a semiconductor orders both from the semi manufacturer and from a distributor).

Andy Tydeman23 Dec, 2021

The article talks about Chip shortages, but I am in the power electronics industry and we are seeing 60 week leadtimes for power semiconductors, where do these fit into the picture?

G P07 Oct, 2021

I have been to a couple of car dealerships and they have been calling me constantly. The lots are no longer completely empty. If they are going off the lot so quickly, why are they constantly calling me trying to sell me a car at MSRP. I truly believe that there is a combination of supply slowly coming in and buyers waiting and not buying until prices get better. I have also looked at the amount of time that is taking used current model cars to be sold. They are taking longer to get sold. In my opinion things are getting better but is going to take car dealers a little while to get off their high horse. So, hold off a few more months that this chip shortage is coming to an end. See car dealers are starting to sell $350 under invoice, which is pennies compared to the$ 28k plus one is spending on a new car which they end up charging in a bogus charge anyway. Please hold on, THE END IS COMING.

Two Startups Are Bringing Fiber to the Processor

Avicena’s blue microLEDs are the dark horse in a race with Ayar Labs’ laser-based system

5 min read
Diffuse blue light shines from a patterned surface through a ring. A blue cable leads away from it.

Avicena’s microLED chiplets could one day link all the CPUs in a computer cluster together.


If a CPU in Seoul sends a byte of data to a processor in Prague, the information covers most of the distance as light, zipping along with no resistance. But put both those processors on the same motherboard, and they’ll need to communicate over energy-sapping copper, which slow the communication speeds possible within computers. Two Silicon Valley startups, Avicena and Ayar Labs, are doing something about that longstanding limit. If they succeed in their attempts to finally bring optical fiber all the way to the processor, it might not just accelerate computing—it might also remake it.

Both companies are developing fiber-connected chiplets, small chips meant to share a high-bandwidth connection with CPUs and other data-hungry silicon in a shared package. They are each ramping up production in 2023, though it may be a couple of years before we see a computer on the market with either product.

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