Russell C. Ellwanger
Analyst · Benchmark Company
Thank you, Noit. Thank you all for joining us today for our second quarter 2025 earnings call. We delivered strong results in the second quarter with revenues of $372 million and result in net profit of $46.6 million. We guide our third quarter revenues to be $395 million, plus/minus 5% and additionally, target a $40 million-plus revenue increase for the fourth quarter over the third quarter. Q3 guidance and Q4 expectations validate our onset 2025 target of sequential quarter-over-quarter growth throughout the year with acceleration in the second half. We announced at years begin, a repurposing of multiple factories, predominantly towards higher capacity for RF infrastructure, namely Silicon Germanium and Silicon Photonics. This is well underway with Q3 and Q4 expected growth being the first fruits of the execution of this strategy. Demand not only remains very strong but is consistently growing as is our increase in both silicon germanium and SiPho capacity and associated customer qualifications. We continue to invest in capacity and also R&D advanced capability CapEx throughout 2025, with further capacity and capability growth planned for 2026 aligned to our customers' forecasted demand, confident in maintaining our #1 market share position in this growing and significant optical transceiver market. Let's review our second quarter 2025 revenue breakdown, along with some context that highlights key trends, momentum shaping our performance for the full year. Kindly refer to Slide #4 for a detailed breakdown of our quarterly revenue figures. Most notable is growth in our RF infrastructure business, attributed to data center and AI expansions served by our Silicon Photonics and Silicon Germanium technologies Our quarterly revenue figures. Most notable is growth in our RF infrastructure business, attributed to data center and AI expansions served by our Silicon Photonics and Silicon Germanium technologies predominantly for optical fiber communication. In the second quarter, RF infrastructure represented 25% of corporate revenues, over $90 million in revenues, up from 14% in the same period of 2024, and expected to significantly increase over the next period. Specific to Silicon Germanium, we began volume production shipments from San Antonio Fab 9 for a Tier 1 customer and as well, volume wafer starts in Israel Fab 2 for another Tier 1 customer, providing substantial capacity increase in this growing market on top of the high capacity in our Newport Beach facility, which itself is realizing capacity increases this year. We have also made Silicon Germanium design kits available in our 300-millimeter Japan factory, Fab 7 for which an additional Tier 1 customer is presently in the design phase. For Silicon Photonics, in addition to our existing volume on 400 and 800 gigabit per second, current wafer starts now include a good ramp on 1.6 terabit per second as the industry continues to move aggressively to higher speeds, which is expected to further help market penetration of Silicon Photonics over legacy EML solutions, expanding our opportunity due to the cost and strong performance benefits of Silicon Photonics. In the first half of 2025 we've moved 5x more SiPho products from preproduction to production phase than in the same period in 2024, already exceeding last year's total. This growth demonstrates our platform maturity, strong customer adoption and efficient operational scalability. Today, most Silicon Photonics products we manufacture serve the transmit function in an optical transceiver module. This quarter, we successfully prototyped a new 300-millimeter Silicon Photonics technology that enables cost and performance advantage to the receive function in an optical transceiver module. This new technology is expected to see initial production in the fourth quarter of this year, expanding the market served by our Silicon Photonics technology beyond that, which we serve today. By leveraging the majority of features in our mature SiPho platform and adding evolutionary customer-partnered improvements to this base process, we've been able to quickly ramp up and achieve high yields for 200 gigabit per second lanes, 1.6 terabit per second optical transceiver products. The transition of 400 gigabit per second lane, 3.2 terabit per second, requires additional and fundamental device, process improvements and new materials, which Tower is aggressively pursuing together with Tier 1 customers. The first of these platforms is anticipated to ramp as early as mid-2026. Slide 5 shows cumulative wafer bill to date for 400G, 800G at 1.6G speed. Presently, we are manufacturing similar amounts of each offering. Looking at prototypes, there's further acceleration of 1.6T with 40% higher year-to-date protos at 1.6T, above 400G and 800G combined and this serving multiple large customers. We are seeing recovery in our RF mobile business, specifically in RFSOI, which showed a Q2 to Q1 revenue increase of over 20% and is expected to show further increases close to 30%, Q3 over Q2 and targeting further increase in Q4. We've gained momentum with a new North America Tier 1 customer now prototyping several products on RFSOI in our 300- millimeter facilities in both Japan and Italy. Beyond RFSOI, we're innovating with other RF switch technologies. This quarter, we won the IMS Best Paper Award with pSemi, a Marata fully owned company for our PCM phase change material switch technology, achieving a 15 zeptosecond or Ron-Coff figure of merit, being a 4x improvement versus state-of-the-art RFSOI. These switches are being prototyped for both low and high-frequency millimeter wave applications. And importantly, this quarter received a Best Supplier Award from Wisol, a major Korean RF front-end module provider. Looking at power management, the computational complexity of AI processors is increasing, leading to a corresponding rise in power requirements. To meet this need, as shown on Slide 6, we provide a variety of power management solutions with switch devices that have ultra low resistance, advanced digital logic integration and manufacturing options in our 300-millimeter lines in the U.S. and Japan. Lead customers are now designing to our high-efficiency power delivery solutions for this rapidly growing market. We deliver best- in-class power transistor performance and continue to advance this offering having released device optimization for higher switching frequencies this past quarter. For sensors and displays, we expect a revenue increase of about 20% in the second half of 2025 against the previous quarters and previous year's run rate, primarily due to increases in the machine vision market. We have also begun substantial new activities with several customers, including a leading automotive imager provider and an OLED on silicon supplier, the latter of which has prototypes already in test. These new activities are expected to fuel additional future growth. Looking at utilizations, in the second quarter, Fab 2 in Israel and Fab 9 in Texas, both operated at about 60% utilization while repurposing tools to now load high levels of Silicon Germanium and to begin the manufacturer of Silicon Photonics. Fab 3 is fully utilized at our 85% utilization model. Fab 5 was at 75% with rising demand for high-voltage power management and Fab 7 300- millimeter was fully utilized, well exceeding the 85% model. In summary, our business continues to advance with significant progress across key platforms. We are well positioned for continued growth and success in our target markets. We are successfully executing to a clear strategy that is translating into tangible financial results with expanding customer engagements and measurable operational progress. We are committed to delivering sustainable and long-term value to our stakeholders. With that, I'd like to turn the call to our CFO, Oren Shirazi. Oren, please.