Detailed Narrative
RF Infrastructure Driving Growth
Tower Semiconductor reported significant growth in its RF infrastructure business, with revenues exceeding $90 million in Q2 FY25, representing 25% of total corporate revenues, up from 14% in Q2 2024. This growth is primarily attributed to data center and AI expansions, leveraging the company's Silicon Germanium (SiGe) and Silicon Photonics (SiPho) technologies. Volume production of SiGe has commenced from San Antonio Fab 9 for a Tier 1 customer and from Israel Fab 2 for another Tier 1 customer, substantially increasing capacity. SiGe design kits are also available in Japan Fab 7, with a new Tier 1 customer in the design phase. For SiPho, current wafer starts include a strong ramp of 1.6 terabit per second products, with 5x more SiPho products moving from preproduction to production in H1 2025 compared to H1 2024.
RF Mobile Business Recovery
The RF mobile business, specifically RFSOI, is experiencing a strong recovery. Revenue increased over 20% QoQ in Q2 FY25 and is expected to show a further increase of close to 30% in Q3 over Q2, with continued growth targeted for Q4. This rebound is attributed to inventory consumption and market share gains by the company's customers. Tower has also gained momentum with a new North America Tier 1 customer prototyping several RFSOI products in its 300-millimeter facilities in Japan and Italy. Additionally, the company won the IMS Best Paper Award for its PCM phase change material switch technology, which offers a 4x improvement over state-of-the-art RFSOI.
Power Management and Sensors & Displays
In power management, Tower is addressing the increasing power requirements of AI processors by providing high-efficiency power delivery solutions with ultra-low resistance switch devices and advanced digital logic integration. Lead customers are designing to these solutions, and device optimization for higher switching frequencies was released this past quarter. The sensors and displays segment is expected to see a revenue increase of about 20% in H2 2025, driven primarily by the machine vision market. New activities with a leading automotive imager provider and an OLED on silicon supplier are underway, with prototypes already in test for the latter, expected to fuel future growth.
Capacity Expansion and Utilization
Tower is strategically investing in capacity and R&D CapEx throughout 2025 and 2026. Fab 2 in Israel and Fab 9 in Texas are operating at approximately 60% utilization while repurposing tools for high levels of SiGe and SiPho manufacturing. Fab 3 is fully utilized at 85%, Fab 5 at 75% due to rising demand for high-voltage power management, and Fab 7 (300-millimeter) is fully utilized, exceeding the 85% model. The company has committed significant CapEx for the 12-inch New Mexico fab, the Italy 12-inch fab (with STMicro), and for SiPho and 5G capacity expansion in Israel, Texas, and Japan.
Currency Hedging Strategy
The company employs a currency hedging strategy using zero-cost cylinder transactions to mitigate foreign currency risks. For the Japanese Yen, where TPSCo's revenue and costs are largely denominated, a natural hedge exists, supplemented by these transactions. For the Israeli Shekel and Euro, where costs are denominated but no revenues, a large portion of the risk is hedged. The fair value of these transactions is recorded in the P&L, contributing to fluctuations in financing and other income net.
Long-Term Financial Model
Tower reiterated its strategic and financial model targeting $2.7 billion in annual revenue at full loading of its existing fabs, including Agrate and New Mexico. This model also projects $560 million per annum in operating profit and $500 million per annum in net profit. Management expects to reach this revenue goal in 2028-2029, with current margin performance tracking ahead of expectations. The company's strong balance sheet, with $1.8 billion in current assets and $2.8 billion in shareholders' equity, supports these strategic investments.