Semtech Corporation (SMTC) | The Buildout — AI Infrastructure
The Verdict
Semtech sells the analog, mixed-signal, and photonic parts that sit inside the optical and copper links connecting AI data-center hardware. Its FiberEdge chips go inside optical transceivers, its CopperEdge chips go inside active copper cables and board-level copper interconnect, and its HieFo photonics business supplies light sources and amplifiers for those links. Alongside that it runs an industrial and IoT connectivity franchise built on LoRa wireless technology and a smaller high-end consumer protection and sensing business. It sells components rather than systems — the pieces other companies put inside their own modules, cables, and platforms.
| Market Cap | — |
| Revenue (TTM) | $1.2B |
| Revenue Growth | +17.8% |
| EBITDA Margin (TTM) | 16.3% |
| Net Debt | $321M |
| Earnings Beats | 7 of 7 |
| P/E (TTM) | — |
| EV/EBITDA (TTM) | — |
What We Like
- Data center revenue reached $100M in FY2027 Q2, up 39% sequentially and 91% y/y, and is guided to rise 45% sequentially and about 160% y/y in Q3 FY2027.
- FY2027 backlog is fully booked and more than 70% of FY2028 was already booked as of the August 2026 call.
- The cellular module divestiture carries more than 500 bps of structural gross-margin improvement; adjusted gross margin excluding that business was 59.7% in Q2 and is guided to 63.9% in Q3, with management calling about 64% a good starting point post-close.
- LoRa set an all-time record of $58M in Q2, up 31% sequentially and 58% y/y, and management now describes better than 20% y/y growth as sustainable across LoRaWAN, LoRa Plus, and Amazon Sidewalk.
- FiberEdge share at 800G rose from about 18% two years ago to well over 50%, and management expects FiberEdge to exceed 50% market share at 1.6T by the end of fiscal 2027.
What We’re Watching
- Capacity: management says the capacity it has secured may not be enough for FY2028, especially the second half. Foundry, tester, and clean-room additions have to land for the booked backlog to convert.
- Customer concentration: in the Q1 FY2027 10-Q, Customer A rose from under 10% to 17% of net sales and to 23% of net receivables. Identities are not disclosed; the next 10-Q is the checkpoint.
- The 2026-10-15 investor event in San Jose, where management has deferred the multiyear financial framework, TAM, and market-share detail.
- Co-packaged optics: management says FiberEdge is not the opportunity under current CPO approaches, and the offsetting photonics content for CPO scale-up is framed as a 2028 opportunity.
The thesis reads as strengthening on demand and intact on margins, but the case now rests on execution rather than demand. Two quarters moved growth, margin structure, and portfolio composition in the same direction, and the prior guide was beaten across revenue, gross margin, and EPS. Management itself names capacity, not orders, as the binding constraint, and filed customer concentration rose in the same quarter the data-center ramp began. The open question is whether the capacity additions land on schedule and whether design-win breadth turns into revenue breadth before Customer A dependence deepens.
Earnings Beat
FY2027 Q2 net sales were a record $342M, up 17% sequentially and 33% y/y — the 10th consecutive quarter of net sales growth. Gross margin was 53.8% and EBITDA was $67.1M, a 19.6% margin. The standout was data center revenue of $100M, up 39% sequentially and 91% y/y, supported by 800G, 1.6T CopperEdge, and the start of the 1.6T FiberEdge ramp. Management reported adjusted diluted EPS of $0.71, up 73% y/y.
| Metric | Q2 FY2027 | Q1 FY2027 | Q2 FY2026 | YoY |
|---|---|---|---|---|
| Revenue | $342M | $291M | $258M | +32.7% |
| Gross margin | 53.8% | 51.9% | 52.0% | +180bps |
| EBITDA | $67M | $40M | $39M | +72.1% |
| EPS | $1.59 | $0.27 | $-0.31 | −608.1% |
| Data center revenue | $100M | $71.6M | n/a | +91% y/y |
| Adjusted gross margin ex cellular module | 59.7% | n/a | n/a | — |
The backlog for the remaining of this fiscal year, I would say, for our target is all booked. And for the next year, we probably over 70% there.— Hong Hou, Chief Executive Officer, 2026-08-25
Management tone: Management's FY2027 Q2 commentary was more specific than the prior call on nearly every operating topic. It moved the data center growth expectation up, said the cellular module divestiture had advanced from final stages to a signed definitive agreement, and disclosed a new gross margin excluding that business. It was direct about the constraint, saying secured capacity may not be enough for the second half of FY2028, and direct that the upside came from earlier 1.6T FiberEdge qualification rather than broad-based demand. It declined to confirm a customer identity and deferred TAM, market-share, and multiyear model detail to the October 15 investor event.
Management Guidance
For FY2027 Q3, management guided net sales to $410M ±$5M, adjusted gross margin to 58.3% ±100 bps, adjusted operating margin to 31% at the midpoint, adjusted EBITDA to $134M ±$4M (a 32.8% margin at the midpoint) and adjusted diluted EPS to $1.05 ±$0.03, on about 99M weighted average shares and an 18% adjusted normalized tax rate. Within that, data center revenue is guided up 45% sequentially and approximately 160% y/y, and LoRa to another all-time high at about +15% sequentially and +65% y/y. Adjusted gross margin excluding the cellular module business is guided to 63.9% at the midpoint. Adjusted net operating expenses step up to $112M ±$3M, reflecting increased R&D for data center projects, and management said CapEx should generally stay below 5% of net sales.
Trajectory
Revenue has risen for ten consecutive quarters, from $206.1M in FY2025 Q1 to $341.9M in FY2027 Q2, with FY2027 Q3 guided to $410M ±$5M. Data center is the fastest-moving line, from $71.6M in FY2027 Q1 to a record in Q2 and guided up 45% sequentially, and LoRa reached a record $58M. Reported gross margin was 53.8% in Q2 against 51.9% in Q1; on management's adjusted basis it was 54.5% in Q2, guided to 58.3%, with the cellular module divestiture carrying more than 500 bps of structural improvement. Reported EBITDA was $67.1M, a 19.6% margin, after $40.0M and 13.7% in Q1, and free cash flow stepped up to $61.4M from $28.0M. High-end consumer is the drag, at $39M and down 5% y/y.
The Model
The model projects FY+1 revenue of $1,494.3M with EBITDA of $350M, a 23.4% margin, and FY+2 revenue of $1,805M with EBITDA of $576M, a 31.9% margin. The near-term anchor is the booked order book — FY2027 fully booked and more than 70% of FY2028 booked — with data center and LoRa both guided higher for the next quarter. The FY+2 step depends on capacity additions landing, 1.6T and photonics content ramping, and the cellular module divestiture closing in Q4 FY2027. The five runs behind the median disagree more at FY+2 than FY+1: the FY+2 revenue spread is 32% (min $1,500M, max $2,082M) versus 10% at FY+1 (min $1,353M, max $1,503M).
| Metric | FY2026 | Next FY (E) | Following FY (E) |
|---|---|---|---|
| Revenue | $1.1B | $1.5B | $1.8B |
| YoY Growth | — | +42.3% | +20.8% |
| EBITDA | $172M | $350M | $576M |
| EBITDA Margin | 16.4% | 23.4% | 31.9% |
Projections are the median of 5 independent model runs. The model’s revenue sits 10.6% below analyst consensus.
For FY2027 Q3, management guided net sales to $410M ±$5M, adjusted gross margin to 58.3% ±100 bps, adjusted operating margin to 31% at the midpoint, adjusted EBITDA to $134M ±$4M (a 32.8% margin at the midpoint) and adjusted diluted EPS to $1.05 ±$0.03, on about 99M weighted average shares and an 18% adjusted normalized tax rate. Within that, data center revenue is guided up 45% sequentially and approximately 160% y/y, and LoRa to another all-time high at about +15% sequentially and +65% y/y. Adjusted gross margin excluding the cellular module business is guided to 63.9% at the midpoint. Adjusted net operating expenses step up to $112M ±$3M, reflecting increased R&D for data center projects, and management said CapEx should generally stay below 5% of net sales.
What Could Go Right — and Wrong
- Capacity additions land on schedule — testers, front-end foundry allocation, extra clean-room space — so the booked FY2028 backlog converts into revenue instead of being capped by supply.
- A second hyperscaler adopts CopperEdge active copper cables at volume; management calls CopperEdge the de facto industry standard for linear equalizers, already taking the lion's share of that market, and ACC volume deployment is guided to start in Q4 FY2027.
- 1.6T FiberEdge exceeds 50% market share by the end of fiscal 2027, as management expects, and 1.6T passes half of data-center revenue in Q3 FY2027.
- CW laser revenue arrives in the first half of FY2028 and photodiode arrays follow, giving the photonics platform its first revenue proof point.
- Amazon Sidewalk scales beyond the nominal, high-single-digit contribution management describes for this year.
- Capacity slips, capping FY2028 revenue and potentially stranding prepayments and CapEx already committed to the expansion.
- Customer A dependence deepens further, or that program plateaus, changing the shape of the data-center trajectory. It was 17% of Q1 FY2027 net sales and 23% of net receivables.
- Co-packaged optics adoption accelerates ahead of the photonics ramp, bypassing FiberEdge content in those applications; management frames the CPO photonics content as a 2028 opportunity.
- Gross margin expansion does not persist once the divestiture step laps, because the organic piece depends on 1.6T and LoRa mix continuing to shift.
- Data-center revenue proves qualification- or inventory-driven rather than deployment-driven.
Looking Ahead
Over the next twelve months the questions are whether capacity lands, whether 1.6T becomes more than half of data-center revenue as guided in Q3 FY2027, and whether the cellular module divestiture closes in Q4 FY2027 as expected. Management has promised a multiyear framework, TAM, and market-share detail at the October 15 investor event, says further portfolio actions remain possible, and guided CW laser revenue to begin in the first half of fiscal 2028. One disclosure to confirm is content per transceiver, which the prepared remarks described as moving from high single-digit dollars to high double-digit dollars and which management then clarified to mean an 80-90% content increase — ambiguous as stated. The next fiscal year starts with more than 70% of revenue already booked, which makes supply rather than demand the swing factor.
- 2026-10-15Investor event, San Jose — Multiyear framework, TAM and market-share detail promised twice.
- Q3 FY20271.6T crosses majority — 1.6T FiberEdge plus CopperEdge above 50% of data-center revenue.
- Q4 FY2027Cellular module close — Divestiture close expected; carries over 500 bps margin improvement.
- Q4 FY2027ACC volume deployment — CopperEdge 1.6T active copper cable deployment starts.
- Exit FY2027FiberEdge 1.6T share — Management expects FiberEdge above 50% share at 1.6T.
- 1H FY2028CW laser revenue — First revenue contribution from CW lasers for transceivers.
Financials
Annual Summary
| Metric | FY2025 | FY2026 | TTM | YoY |
|---|---|---|---|---|
| Revenue | $909M | $1.1B | $1.2B | +15.5% |
| Gross Margin | 50.0% | 51.5% | 52.0% | +155bps |
| EBITDA | $113M | $172M | $191M | +52.6% |
| EBITDA Margin | 12.4% | 16.4% | 16.3% | +399bps |
| Net Income | −$162M | −$40M | $154M | +75.0% |
| Free Cash Flow | $50M | $157M | $181M | — |
| Net Cash | — | — | — | — |
Key Ratios (Trailing)
- P/E TTM—
- EV/EBITDA TTM—
- EV/Revenue TTM—
- Price/FCF TTM—
- Gross Margin (TTM)52.0%
- EBITDA Margin (TTM)16.3%
- Net Margin (TTM)13.1%
- ROIC11.0%
- FCF Conversion94.8%
- SBC / Revenue7.1%
The Company
Semtech is an analog and mixed-signal semiconductor company. Its FY2026 10-K describes it as a provider of high-performance semiconductors powering data center networking, IoT connectivity, and cellular infrastructure, with three reportable segments: Signal Integrity, Analog Mixed Signal and Wireless, and IoT Systems and Connectivity. Signal Integrity sells optical and copper data-communications and video-transport products, with high-speed interfaces from 100 Mbps to 1.6 Tbps. Analog Mixed Signal and Wireless covers transient voltage suppressors, sensing and user-interface parts, RF products, LoRa devices, and power products. IoT Systems and Connectivity sells IoT modules, gateways and routers, and connected services.
Semtech designs and markets the products, while third parties do much of the manufacturing. The Q1 FY2027 10-Q says a significant amount of its subcontractors and suppliers — including foundries that supply silicon wafers — are in the U.S., China, Israel, Japan, Taiwan, and Vietnam, and that a significant amount of assembly and test is done by third-party contractors in China, Malaysia, Taiwan, and Vietnam. The 10-K lists 14 named sites, skewed to R&D, application engineering, test and assembly, and reliability testing, led by the Camarillo, California headquarters at 88,000 square feet and Richmond, British Columbia at 76,000 square feet. Its HieFo indium phosphide photonics fab, acquired in March 2026, is reported in Signal Integrity and its products are reported in the data center end market. In Q1 FY2027, 72% of revenue was Asia-Pacific and 56% was China including Hong Kong, against 19% North America and 9% Europe.
Business Segments
Competitive Landscape
Management describes Semtech as designed into every module provider in its target markets, several on a sole-source basis, and calls CopperEdge the de facto industry standard for linear equalizers, with FiberEdge expected to exceed 50% market share at 1.6T by the end of fiscal 2027. The source also records that Semtech is named as a competitor in third-party filings by AOSL, LFUS, MPWR, MRVL, and MTSI, and that Marvell and MACOM are scaling into NPO, TIA/driver, and linear-equalizer sockets — the same lanes as FiberEdge and CopperEdge. Broadcom appears as competitor, customer, and supplier in the wiring map, but management characterizes it as an enabler, saying Semtech is 'the pure beneficiary of the Broadcom good SerDes rather than a victim.' Management also concedes that under current co-packaged optics approaches FiberEdge is not the opportunity, because customers use integrated solutions.
- Broadcom (AVGO)Mapped as competitor, customer, and supplier. Management calls Broadcom the industry leader in SerDes and says Semtech is 'the pure beneficiary of the Broadcom good SerDes rather than a victim.'
- Marvell (MRVL)Named as a competitor in third-party filings; the neighbor read-through has Marvell scaling into NPO, TIA/driver, and linear-equalizer sockets.
- MACOM (MTSI)Named as a competitor in filings; the neighbor read-through cites a copper linear equalizer opportunity with a large hyperscaler and 10-20 active NPO development projects with revenue expected in 2028.
- Coherent (COHR)Listed among competitors in the wiring map, and mapped as a customer for CDR/retimer signal-integrity ICs and FiberEdge TIA/driver products.
- Littelfuse (LFUS)Named Semtech as a competitor in its own filing (documented); not discussed in the transcripts.
Supply Chain
Semtech sits mid-chain, buying wafers, indium phosphide substrates, and test capacity, and selling signal-integrity and photonic components to module makers, cable makers, and hyperscalers. None of the neighbor transcripts in the source set mentions Semtech by name.
More on SMTC: Earnings recap