In January 2023, Semtech paid about $1.2 billion for Sierra Wireless, one of the best-known names in cellular IoT. Now the cellular modules at the heart of that deal are going to Taiwan's Compal Electronics for $62 million.
The two numbers aren't a like-for-like comparison. Sierra came with routers, a connectivity business and more besides, and a good part of that is staying with Semtech. But the gap tells you most of what you need to know about how the module side of the bet turned out.
Semtech announced the sale in August. Compal gets substantially all of the module business: the intellectual property, the customer relationships and the people. The deal should close before the end of Semtech's fiscal 2027, once regulators sign off.
Chief executive Hong Hou didn't dress it up as anything other than a retreat to firmer ground. "This divestiture sharpens our focus on the product portfolio where we have the strongest conviction in growth and industry leadership: data center and LoRa connectivity," he said.
The Bet That Didn't Pay
Go back to 2023 and the logic sounded tidy. Semtech owned LoRa, the long-range, low-power radio behind most LoRaWAN networks. Sierra had cellular modules, AirLink routers and a managed connectivity business. Put them together, the pitch went, and you get one company that can connect almost anything, from a water meter in a basement to a truck on a highway.
Then the market turned. Module makers spent much of 2023 and 2024 working through excess inventory built up during the chip shortage. Semtech had funded the deal largely with debt. And the price of a basic cellular module kept falling.
That last point is the one that matters most.
A Race To The Bottom Semtech Couldn't Win
Chinese suppliers now set the pace in cellular modules. Their scale lets them sell at prices that leave little room for anyone else. Counterpoint Research says global cellular IoT module shipments rose 15% last year, led by Cat-1 bis and 5G. More units, yes. More profit for vendors outside China, not really.
Cat-1 bis is the clearest example. It's become the default choice for mid-speed IoT devices, and it is sold on price above almost everything else. We looked at how that happened in why Cat-1 bis won cellular IoT.
Semtech is, at heart, an analog and mixed-signal chip company. Its best businesses sell specialised silicon with healthy margins. A high-volume, thin-margin module line was always an awkward fit.
**Our read:** this is less a failure of the product than a mismatch of business models. Modules reward scale, cost control and patience. Semtech needed to fix its balance sheet, and it needed focus. It chose focus.
And Modules Are Getting Harder, Not Easier
There's a second reason to step away now. The module is turning into a small computer, with application processors, security hardware and, increasingly, AI acceleration built in. We wrote about that shift in the cellular module becoming an AI computer. Staying competitive means spending more on engineering every year, not less. That's a commitment for a company that wants to be a module leader, not one that's trying to shrink its debt.
What Semtech Keeps
LoRa is the obvious one, and it's still growing. LoRaWAN is now well beyond smart meters, which we covered in LoRaWAN beyond the smart meter.
Less obvious is what happens to the rest of the Sierra estate. The announcement doesn't spell it out line by line. But the AirLink routers are clearly still part of Semtech's plans. In September the company announced an integration with Palo Alto Networks to secure AirLink routers at utility and industrial sites.
So this isn't Semtech leaving cellular IoT entirely. It's leaving the part where the competition is fiercest.
Why Compal Wants It
Compal is best known for building laptops for other brands. It's huge at manufacturing and far smaller in IoT. Buying an established module line gives it something that's slow and expensive to build from scratch: carrier certifications, design wins with device makers, and engineers who know how to get a module approved on networks around the world.
It's clearly serious about the category. Days after agreeing the deal, Compal's board approved up to $80 million to set up a new unit, Compal IoT.
There's also a geopolitical angle. In the US in particular, buyers are more cautious about Chinese components in connected devices. A module vendor based in Taiwan, with the manufacturing muscle to compete on cost, could find doors open that are closing for others.
If You Use These Modules Today
Customers will want to hear three things from Compal, and soon: that existing modules will keep getting firmware and security updates, that certifications carry over without a hitch, and that the roadmap isn't quietly shelved. The deal transfers the team along with the products, which helps. Written commitments help more.
For everyone else, the lesson is simple. In cellular IoT, owning the radio is no longer enough. The companies that make money either sell at enormous scale, like the Chinese leaders, or sell something the radio can't do on its own. Semtech has decided which side it wants to be on. Compal is betting it can make the other side work.
