Semtech is emerging as a data center networking component company that offers competitive solutions for the next leg up in AI systems. The company is going through a pivot due to a new approach for short haul networking that would rely on copper wiring and components instead of optical networking.
Over the past decade, Semtech became known for its long-range (LoRa) networking solutions, which are long range, lower power wireless platforms. Internet of Things (IoT) devices and satellites use Semtech’s low power wide area network and radio frequency transmitters for up to 10X the range and 3X less power.
Relying on this experience in providing connectivity modules, the company provides data center components for the high speed, and high bandwidth needs that AI data centers require. Nvidia is testing the upper limits of what AI servers can do, which means how these systems are built are in a constant state of flux. Semtech may have a unique opportunity to supply Nvidia with copper redrivers, DSP components, and linear pluggable optics. By the end of 2025, it’s expected that Meta and other cloud service providers will be building out Nvidia GB200 systems with Semtech’s copper networking components.
Brief Background on Data Center Networking & Components
Electro-optics help to increase data rates and has replaced NRZ data transmission due to doubling the bit rate. Hyperscalers require high bandwidth and port density. PAM4 connects networking ASICs with AI machines and servers. Digital-based PAM4 uses analog-to-digital converters to clean up the signal in the digital domain before converting it back to analog to transmit.
Data center interconnects have transitioned to 200-gig, 400-gig and 800-gig PAM-based electro-optics – which are 100GBx2, 100GBx4, and 100GBx8. Of these, the 800-gig is the primary interconnect for AI deployments. Artificial intelligence and machine learning drive demand for the 800-gig PAM to increase the speed of input-output and to process the data flows. This doubles the throughput (bandwidth) due to an 8x100Gpbs optical transceiver for inside and between AI clusters.
There is a 1.6T solution with 200-gig per lane that Marvell was first to launch for both the 5nm and 3nm. The 200-gig per lane carries outsized importance in the next leg up for PAM4-based networking. Marvell’s Ara 1.6T PAM4 DSPs on the 3nm process are designed for GenAI and the Nova 1.6T PAM4 DSPs on the 5nm process are for broader AI/ML applications. We discussed this here and most recently here.
1.6T PAM4 DSPs are retimer devices that allow for 200-gig per lane on both the frontend and backend to support the increased need for connectivity and higher bandwidth that AI infrastructure requires.
Marvell’s solutions are built for optical networking. You’ve likely heard the word “fiber,” such as Google’s Fiber internet service, which refers to fiber optic cables that transmit data as light pulses. Optic fiber networking are thin strands made of pure glass whereas the other option is copper cables. Optic has a commanding 70% market share in data centers due to significantly faster speeds than traditional copper wiring. Optic networking also allows higher bandwidth, preventing packet loss and jitter, which as you can imagine, can become a problem when training data-hungry AI models and deploying them.
Data centers have maintained a mix of optic networking and copper networking around that 70/30 split because optic networking is costly and harder to maintain. Optical components are also known for running hot and failing. Currently, the sought-after mix for AI systems is to use optical networking for long haul for large clusters of 1,000, 10,000 or 100,000 devices and to use copper for short haul.
Blackwell is Testing the Upper Limits of Power Wattage
Originally, the Blackwell B200s were designed to be 120 kilowatts of power. In order to achieve a lower power wattage of 100 kilowatts of power, Nvidia changed the interconnects from optic fiber to copper. According to the Next Platform, these systems will use up to 5,184 copper cables with up to 200GB per SerDes lane with NVLink switches. The article has a link to a picture of the copper cables, which helps to visualize what thousands of cables going into a NVL72 server looks like.
The new Blackwell systems are being designed with copper cables for the short haul of connecting up to 72 GPUs. Copper networking previously had a reach of 1.5 meters, yet this has evolved to where there is now a reach of 3 meters to assist in connecting these large systems. This leads to Semtech, which is reporting early, promising signs by offering copper networking components for the AI data center.
CopperEdge 200G Redrivers:
A notable area of difference is that optical networking requires retimers whereas copper networking relies on redrivers. The lower power requirements from the 120 kilowatts to the 100 kilowatts on Nvidia’s NVL rack scale systems partly comes from removing the retimer and the optical transceivers.
Passive copper cables can only enable reach of 1.5 meters, limiting the use of passive copper cables in data centers. The need for increased data rates has created strong demand for active copper cables (ACC) that help to extend reach for copper cables up to three meters. In Q3, Semtech initially shipped the CopperEdge 200-gig linear redrivers used in 1.6T Active Copper Cabling (ACC). The management stated there will be a “nominal ramp” next quarter and then “progressively” ramp from Q1 to Q4 of next calendar year (fiscal 2026).
According to management’s opening remarks: “At 200-gig and at a cable length up to three meters, CopperEdge will meet signal integrity requirements not readily achievable with direct attached copper, or DAC, cables. And at a lower latency, lower cost and much smaller power consumption required compared to DSP-based retime solutions.”
Semtech’s management team is essentially communicating that previous debates to where copper was not a suitable replacement for optical networking was relying on passive copper cables instead of active copper cables (ACC).
Last month, Meta presented a dual rack NVL36 system called Catalina using Semtech’s CopperEdge-enabled active copper cables (ACCs). According to management, “Semtech's low-power, low-latency CopperEdge solutions have gained positive attention in the data center ecosystem. And our technical collaboration with a number of CSPs and cable manufacturers has accelerated since last quarter.”
According to the Q&A, the qualifications with the additional CSPs are expected to contribute to revenue by mid-2025: “So, the applications on the board and in the cable and even in the connectors by the multiple CSPs are in the qualification phase, in the demonstration phase. So, the typically good thing about the copper-based solutions is the qualification cycle is relatively short compared to the optical-related products. So, I will say probably from the mid of 2025 calendar year, the other opportunities on the linear equalizer will start contributing to the revenue.”
Tri-Edge PAM4 and FiberEdge TIA, Laser Drivers:
Semtech shipped 400-gig active optic cable (AOC) PAM4 electro-optics this quarter, which includes SKUs for both long-reach and short-reach optical links. Management stated that in addition to CopperEdge, “our Tri-Edge PAM4 products continue to contribute meaningful sequential and year-over-year growth.”
FiberEdge transimpedance amplifier (TIA) and laser drivers enable high-speed, short reach interconnects with new SKUs announced a year ago. It was stated on the call that management believes they have captured incremental market share for these short reach TIA and laser components: “Data center deployment at 100-gig has been ramping up strongly and we believe we have captured incremental market shares, thanks to our closer engagement with our customers and our operations excellence.”
There is evidence that Semtech is a supplier for the TIA and laser drivers for the new Nvidia-based DSP that was announced recently. The initial reaction from analysts is that Nvidia’s DSPs could claim 10% to 20% of the market by 2026.
Semtech has a newer product within Linear Pluggable Optics (LPOs) showcased last March. According to the initial press release, these newer-gen LPOs help to deliver the high speed that AI and ML applications require while reducing power consumption by 50% versus DSP-based solutions. Note: You can read more about DSPs in our Marvell write-up here. here. According to the earnings call,
Semtech has received initial orders for test and qualification on its 800-gig and 1.6T LPO transceivers. As far as timing goes, it was stated: “Our confidence in LPO adoption has increased since last quarter with meaningful net sales contribution from TIAs and redrivers expected by the latter portion of FY '26.” LPOs can reduce the number of DSPs required, thus resulting in reduced power consumption.
$100M Opportunity for CopperEdge:
In the June earnings call, it was stated that the copper ACC opportunity was a $100 million market opportunity with Semtech seeing about 50-50 of this: “So, the number of cables that could be used is heavily dependent on both the rack configuration and NVL72 versus NVL36, and the number of horizontal connections, and obviously, the number of NVLs that we'll ship next year. So, it's heavy dependence on shipment configuration, but to just cut to the chase, we kind of size it at $100 million opportunity, not as base case, I definitely don't want to put a high side case number out there. I think on that base case, it's reasonable to expect that we're going to share production between us and one other component supplier. And if you want to just put a slug in there for the share that we would see, you could call it 50-50.”
CopperEdge had net sales this quarter that were “in the high-single-digit million dollars.” According to discussions on the call, Meta’s Catalina is going to be the main platform: “We know one major CSP is going to be used at the baseline for deployment in 2025 and beyond as long as they use GB200 GPU processors.” From there, it’s expected the capabilities will draw in more cloud service providers (CSPs) due to improved signal integrity and lower power consumption.
This quarter, for the CopperEdge 200GB redrivers, the CEO stated demand should be measured by the number of ports for the 200GB rather than the number of Nvidia NVL systems. Specifically, it was called out that Broadcom’s Tomahawk 6 will have ports for 200GB, which is likely to increase the opportunity beyond the $100 million (at 50-50 share) that was called out a few quarters back.
Here was an important exchange in the Q&A:
Craig Ellis:
Yeah. Hong, Mark, congrats on the execution, especially around growth and margins. Hong, I wanted to go back to data center a bit, maybe approach it in a more longer-term way. So, I think it was at least three quarters ago that we started talking about what seemed to be a single company, more single-product opportunity as having $100 million base opportunity to it that would be in the '25, '26 timeframe. The question is this, as the business looks like it's gotten significantly broader customer and application level exposure and design-in potential, how do we think about the size of this business two to three years down the road?
Hong Hou:
Craig, that's a great question. I think the opportunity started with as a single company, single platform and that is a great trailblazer for this new product that accelerated our time-to-market, but right now, as you mentioned, as we observed, this capability is broadly recognized and beyond that single company beyond that single platform. So, that's why we have been thinking about and to qualify the opportunity by counting the number of 200-gigabit per second ports.
The reason for that is everywhere you have 200-gigabit per second transport, you have the same challenge. You need the same solution for signal integrity. And with the Tomahawk 6 rolling out right around the corner, well, maybe six months to 12 months and all the ports is going to be 200-gig, and it's only increasing our opportunities. So, so far, the application has been for scale-up, but with the scale-out added into the opportunity pool, we got a tremendous opportunity in there.”
-End Quote
It was mentioned again that the $100 million baseline for the ACC opportunity is a floor — and not a ceiling: “We have invested time with our customer and end-users of the racks over the past few months. We reaffirmed our expectation of exceeding the floor case provided a couple of quarters ago based on the first-hand information from the ecosystem.”
Linear Pluggable Optics (LPOs) to Ramp in H2 2025:
As stated in the Product paragraph above, Linear Pluggable Optics (LPOs) will see “meaningful net sales contribution” by the “latter portion of FY26.” According to the Q&A, the NVL36 and NVL72 systems from Nvidia will drive this demand specifically for the front-end ports:
“And I have heard some others using NVL72 and — where we don't have the contribution for backplane, but at the front-end, they either need to connect 1.6T ports or 800-gigabit ports to top-of-the-rack or end-of-the row switches. I think that's where LPO can really have a good — provide a very differentiating solution because of the low power consumption. So, I think that is probably why the industry is pushing very hard on the LPO solutions.”
Semtech’s management also made it clear that they also have the best linear receive optics (LRO) and will benefit regardless of a current debate on if LPO is interchangeable with current ethernet switching chips: “To us, we have the arguably the best driver — best TIA on the receiving side. So, we'll benefit from either LPO or LRO. And whereas the industry progress in getting better understanding on the compatibility of different type of host with LPO and LRO capabilities, I do believe this type of transceivers can chip away a sizable total addressable market currently served by the DSP retimed solutions.”
According to the opening remarks, Semtech believes they have an advantage with LPOs and the issues the market has seen from other suppliers: “CSP [cloud service provider] engagement has proven insightful. It appears that LPO adoptability is meaningfully correlated with a 30 signal-to-noise ratio at the host. Fortunately, both current and future generation switches supply significantly improve the performance, and this enables easier LPO adoption in many specific use cases.”
About a year ago, there were reports that Nvidia had plans of using LPOs by the end of 2023. You can read Semtech’s LPO announcement here.
Revenue:
Semtech’s revenue returned to positive growth after two quarters of negative revenue growth. This was helped by record AI data center revenue which increased 78% YoY and 58% QoQ. The infrastructure end market is expected to provide the strongest near-term tailwinds.
- Q3 revenue grew by 17.9% YoY and up 10% sequentially to $236.8 million. Data center revenue was the main highlight of the report, increasing by 78% YoY and 58% QoQ to a record $43.1 million.
- Management has forecast a strong Q4 guide of $250 million, representing 29.6% YoY growth at the midpoint. The Q4 guide beat estimates by 3.3%. Per the call, this will be primarily driven by data center infrastructure revenue: “We expect net sales from the infrastructure end market to increase sequentially with data center applications leading to growth. Infrastructure is expected to provide the strongest near-term tailwind.”
- Analysts expect growth to sustain with Q1 revenue of 23.9% YoY to $255.27 million and 25.3% YoY to $269.9 million in FQ2.
- Looking further out, analysts expect FY2026 revenue to grow 22.3% YoY to $1.11 billion and 16.1% YoY to $1.29 billion in FY2027.

End Markets
Infrastructure:
Q3 Infrastructure End Market revenue grew by 52% YoY and 24% QoQ to $65.8 million. This segment accelerated from last quarter with 25% YoY growth and down (-5%) QoQ. The large sequential rebound was primarily led by record data center revenue of $43.1 million, up 58% QoQ and 78% YoY.
The company began shipments of the CopperEdge 200-gig linear redrivers that are used in 1.6T Active Copper Cable (ACC) applications. CopperEdge sales in FQ3 were high-single-digit million dollars, and management expects a higher contribution in Q4, followed by a ramp into FY2026. As stated, Meta is generally understood to be the lead customer with the Catalina system, yet additional CSPs (cloud service providers) are in the qualification stage with expectations there will be more customers by H2 CY2025.
While proving the outlook for Q4, CFO Mark Lin said, “We expect net sales from the infrastructure end market to increase sequentially with data center applications leading to growth. Infrastructure is expected to provide the strongest near-term tailwind.” It was later stated to an analyst: “Harsh, we said this in Q3, it was high-single-digit millions in Q3. It's a nominal ramp in Q4, and then it progressively ramps through FY '26, Q1, Q3 — Q1, Q2, Q3 and Q4. So, we've been pretty consistent with that messaging and we don't really see a change in that timing.”
Our firm will be looking to Q1 onward for Semtech to show an important acceleration in their leading segment, Infrastructure.

High-End Consumer:
High-end consumer revenue grew by 7% YoY and 8% QoQ to $40 million, helped by market share gains and seasonally strong Q3. Revenue decelerated slightly from 9% YoY and 7% QoQ growth in Q2. Due to seasonality, management expects high-end consumer revenue to decrease sequentially in Q4.
Revenue in high-end consumer TVS (Transient Voltage Suppressor) grew by 9% QoQ and 7% YoY to $28.3 million and management highlighted that Consumer TVS revenue reported sequential growth in each quarter in FY2025.
In the earnings call, the CEO said “We communicated market share growth in consumer TVS grew last quarter, augmenting our prior commentary. Our expectation is for continued market share expansion as the world's largest consumer electronics company and at other key North American and Korean companies. Based not only on our design-in activities for future generations of product, but also for Semtech's ability to deliver on time and to meet demand upside.”

Industrial:
The industrial end market grew by 9% YoY and 5% QoQ to $131 million. With the increase in LoRa and the cellular IoT portfolio, the industrial end-market revenue is expected to increase sequentially in Q4.
- LoRa-enabled solutions grew by 1% QoQ and 104% YoY to $29 million. The CEO highlighted, “Encouragingly, consumption for our recent generation LoRa product has been increasing, which signals market adoption of this enhanced capability.
LoRa Gen 2 offers a smaller footprint and reduce the power consumption, while LoRa Gen 3 delivered improved radio performance and a further simplification of customer development through onboard LoRaWAN provisioning capability. Supporting LoRaWAN remains a key company strategy.”
- IoT systems revenue grew by 11% sequentially to $57.9 million with solid bookings and backlog.
- IoT Connected Services revenue was $24.6 million, benefiting from our AirVantage connectivity platform.
- Industrial TVS revenue was $10.2 million, up 7% QoQ. The CEO noted, “We have noticed the current market sentiment in the industrial market, but we remain confident in Semtech growth with our product offerings.”
The Sierra Wireless acquisition has negatively impacted the industrial end market revenues. The company had acquired Sierra Wireless in January 2023. However, the company experienced reduced business levels in the business acquired from Sierra Wireless due to the challenging macro environment and high-interest rate environment. This could be the portion of the business that will be divested (see below).

Margins Expanding:
The company has undertaken organizational restructuring and reduced workforce to reduce overhead spending. The company’s margins have improved, helped by operating leverage and a higher-margin product mix like CopperEdge. The incremental margin gain from the product mix was also further answered during the Q&A.
Tore Svanberg (Analyst)
“Yeah, thanks. I just had a quick follow-up for Mark. Mark, so 40 bps — basis point improve gross margin for January. How should we think about gross margin for fiscal year '26? Is it mainly mix at this point that will drive the gross margin, or is there — are there other things maybe scale or anything like that that could potentially also lift it as well?
Mark Lin (CFO)
Yeah. Scale definitely helps, but definitely, it's the primary driver in our guide is mix, right? So, it's a 40-bp improvement, but we did get a little bit of a tailwind from the CopperEdge shipments this quarter, right? So that was definitely a tailwind. But as other portions of our business inflect upward, there's a little bit lower margin in IoT, our systems hardware business, so that's a little bit lower. We'll definitely take the gross profit, right, but definitely that business doesn't contribute quite the percentages, let's say, our infrastructure business.”
- Q3 gross margin was 51.1% compared to 46.3% in the same period last year.
- Adjusted gross margin improved 110 bps YoY and 200 bps QoQ to 52.4%. Management has guided for a sequential improvement of 40 bps to 52.8% in Q4, helped by a better product mix.
- Q3 adjusted operating margin improved to 18.3% from 10.2% in the same period last year helped by operating leverage and better product mix. Management has guided for 140 bps QoQ improvement to 19.7% in Q4.
- It is also important to note that last year, the company reported non-cash goodwill and intangible impairment charges of $513.4 million in Q4 due to the lower contribution than expected from the acquired Sierra Wireless business. The company may also record the impairment charges in Q4 this year that impact the GAAP operating margins.

- Q3 net loss was (-$7.6 million) or (-3.2%) of revenue compared to (-$38.3 million) or (-19%) of revenue in the same period last year. Adjusted net income was $20.3 million or 8.6% of revenue compared to $1.5 million or 0.7% of revenue in the same period last year. Management Q4 adjusted net margin guide is 10.3%.
- Adjusted EBITDA was $51.1 million or 21.6% of revenue compared to $28.1 million or 14% of revenue in the same period last year. Management Q4 adjusted EBITDA margin guide is 22.8%.
EPS Growth in Triple Digits
The company beat Q3 adjusted EPS estimates by 11.7%, which was helped by operating leverage and a better product mix. Q3 adjusted EPS grew more than 100% sequentially to $0.26. Management Q4 adjusted EPS guide is $0.32, representing sequential growth of 23.1% and beat adjusted EPS consensus by an impressive 18.5%.
Adjusted EPS is expected to have strong growth in the coming quarters.
- Analysts expect Q1 FY2026 adjusted EPS to grow 445% YoY to $0.33 and FQ2 adjusted EPS to grow 252.7% YoY to $0.39.
- Looking further out, analysts expect FY2026 adjusted EPS to grow 120.5% YoY to $1.69 and 33.7% YoY to $2.26 in FY2027.

Cash Flow Inflected
The cash flows have been lumpy in the past. The company reported strong cash flows in the recent Q3 helped by improving bottom line and is expected to continue to generate positive cash flows in the coming quarters.
The CFO replied to an analyst question on free cash flow generation in the next few quarters, suggesting that the company will generate positive cash flows despite the inventory buildup to support the data center growth. “Yeah. Just, I’m quite pleased, Tristan, Q3 operating cash flow was $29.6 million. Free cash flow was $29.1 million. So, cash flow definitely we’ve inflected consistent with the business. And I’m pleased that cash flow is really – generation is broad-based across our businesses. We may have to build a little bit more inventory supporting demand, but we continue to generate cash.”
- Q3 operating cash flow was $29.6 million or 12.5% of revenue compared to (-$5.8 million) or (-2.9%) of revenue in the same period last year.
- Free cash flow was $29.1 million or 12.3% of revenue compared to (-$12.4 million) or (-6.2%) of revenue in the same period last year.
- The company had cash of $136.5 million and debt of $1.19 billion at the end of Q3 FY2025. The company made a principal repayment of $5 million of the credit facility in FQ3 and a further repayment of $10 million subsequent to the end of the quarter.
- The company accumulated the high debt of about 9X its cash due to the Sierra Wireless acquisition in January 2023. Management is working on reducing its high debt.
- The company also recently announced the closing of the public offering for a total gross proceeds of about $661 million and it plans to use the proceeds to repay debt. With the proceeds from the recent offering, it will help to reduce the debt to about 2X its cash. However, it will also lead to dilution of about 12% to the existing shareholders.
Potential Divesture of Non-Core Segments
Out the gate, the CEO stated the primary goal is for portfolio rationalization and balance sheet improvement. He stated: “I'm fully aware of the financial and the non-financial benefits of portfolio rationalization, and we are particularly focused on opportunities that accelerate our debt repayment and decrease our leverage ratio.”
When asked during the Q&A if Semtech is still interested in selling parts of the business, the CFO affirmed this is a top priority: “At this point, I think all of our businesses have inflected the growth. So, as Hong mentioned in his prepared remarks, we believe that should help valuation, but that in no way will delay or maybe impede our desire to potentially divest these non-core businesses.”
We view any potential divesture of non-infrastructure segments as bullish as removing those segments to allow for a more concentrated AI-stock valuation. The more that Semtech can become an AI pureplay, I think the better it’ll be for its stock performance. Psychologically, it will help investors to see more clearly the material progress in the important pivot underway.
The company’s Sierra Wireless acquisition in January 2023 did not meet the company’s expectations. The company experienced reduced growth levels in the business acquired from Sierra Wireless due to the challenging macro environment, and the high interest rates environment increased the interest expenses. So, in our view, the company might divest this business.
The company appointed Dr. Hong Q. Hou as the President and CEO in June 2024. He has been a member of the Board of Directors since July 2023. He replaced the previous CEO, Paul H. Pickle, due to his differences with the board. Dr. Hou has previously held senior leadership positions in Intel and Fabrinet.
China Exposure:
There is exposure to China in the PON product, which stands for passive optical network and is used for telecom use cases. It’s helpful this is not AI-related, per the information from the call. Per the earnings call: “So, the PON business up to this point has been primarily in China and we expect another tender offer over the next quarter or two.”
Conclusion:
As stated in the Q4 webinar, 2025 belongs to Nvidia (again), yet we plan to expand how we participate in a more unique, strategic way by looking more deeply at suppliers-of-choice in what is decidedly AI hardware’s moment to shine. Semtech’s suite of products within signal integrity are off to a great start with a noticeable rebound this past quarter, yet the opportunity is in front of this key Blackwell supplier, and the lull in Q4 should allow a reasonable entry.
The current beat was driven by the fiber products, while the ACC (copper) products are slated to meaningfully contribute come Q1. By carefully threading a needle from what’s been stated on the earnings calls and what’s been announced around the Blackwell GB200 systems, ACC could be a 5X opportunity with Meta alone — with more CSPs likely to follow suit by this time next year.
A note of caution is that Semtech has a high debt leverage ratio. The company is working on bringing the debt leverage down. Although managemet was not clear on timing, I’d like to see Semtech being more of an AI pureplay by the time we exit next year. The portfolio adjustments will help it stand out for its growth potential in the oversubscribed space of AI infrastructure.
Advanced Members should keep an eye out for trade alerts as we closely track this little-known company.
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