Xcelis (ACLS) Q1 2024: Silicon Carbide Surges 20% as Power Segment Drives Backlog to $1.1B

2024-05-02 | By EarningsIQ Research

Silicon carbide strength and margin expansion defined Xcelis’ Q1, as the company’s power segment outpaced expectations and drove a record $1.1B systems backlog. Management is banking on mature nodes and power, particularly in China, to offset a delayed memory recovery and support a second-half revenue uptick. Margin discipline and product mix remain central levers, with operational actions underway to sustain profitability amid shifting end-market demand.

Summary

• Silicon Carbide Outpaces Silicon Power: Product mix shifted further toward high-margin silicon carbide tools, deepening Xcelis’s moat in power semiconductors.
• Margin Expansion Anchors Profitability: Gross margin improvement and cost actions offset volume softness in memory and general mature segments.
• Second-Half Weighting Signals Recovery Bet: Management expects uptick in mature logic and memory, but timing remains uncertain.

Business Overview

Xcelis Technologies designs and manufactures ion implantation equipment, critical tools for semiconductor fabrication that enable precise doping of silicon wafers. The company’s revenue is split between systems sales (implant tools) and CS&I (customer support and installed base services). Its market focus spans power semiconductors (silicon carbide and IGBT), mature logic/foundry nodes, image sensors, and memory (DRAM/NAND). Power devices, particularly silicon carbide, are highly implant-intensive, positioning Xcelis as a key supplier for automotive, industrial, and data center chipmakers.

Performance Analysis

Xcelis delivered above-guidance revenue and EPS in Q1, propelled by robust demand for Purion systems in the silicon carbide power segment and strong shipments to China. Gross margin improved by over 500 basis points year-on-year, reflecting favorable product mix and operational execution, even as selling, R&D, and tax expenses ticked higher. System revenue was stable while CS&I saw a modest decline due to lower fab utilization, prompting a downward revision in CS&I full-year expectations.

Geographically, China accounted for 59% of sales in the quarter, with the power segment representing 55% of total systems revenue. Within power, silicon carbide’s share grew 20% YoY, offsetting a decline in traditional silicon power devices. Mature node shipments, including logic and analog, also outperformed, making up 41% of systems revenue, while memory (DRAM) remained a minimal contributor at 1%.

• Product Mix Drives Margin Gains: Higher silicon carbide content and advanced Purion tools elevated gross margin to 46%.
• Backlog Provides Revenue Visibility: $1.1B systems backlog supports second-half recovery narrative.
• CS&I Headwind from Utilization: Lower fab activity pressured services revenue, leading to a revised $250M run rate for 2024.

Overall, Xcelis is leveraging its leadership in implant-intensive power devices to offset cyclical softness in memory and general mature nodes, while operational initiatives aim to sustain profitability through mix and cost discipline.

Executive Commentary

Strategic Positioning

1. Power Segment Leadership and Product Differentiation

Xcelis has cemented its position as the only ion implantation company offering full recipe coverage for all power device applications, particularly in silicon carbide. The Purion Power Series, with its advanced M, H200, and XC models, enables customers to optimize both 150mm and 200mm fab ramps. This unique portfolio is driving global adoption, especially in China and Japan, and provides a durable competitive advantage as power device demand accelerates.

2. Geographic and End-Market Diversification

China remains the largest contributor, but Xcelis is actively expanding its footprint in Japan and Europe. The company’s customer base is broadening, with power, mature logic, and image sensors all contributing meaningfully. Flexibility across automotive, data center, and clean energy end-markets reduces dependence on any single vertical and positions Xcelis to capture secular growth drivers.

3. Margin Expansion and Operational Efficiency

Margin improvement is a core focus, with actions such as a retirement incentive program and cost reduction in supplied components underway. Management is targeting sustainable gross margins above 45% long-term, using product mix, operational flexibility, and disciplined R&D investment as levers. These measures aim to buffer the impact of volume fluctuations in cyclical segments like memory.

4. R&D and Advanced Logic Penetration

Investment in R&D remains elevated, with efforts concentrated on advanced Purion extensions and evaluation systems at leading logic customers and research institutes. These initiatives are designed to expand Xcelis’s presence in advanced logic and specialty markets, providing additional growth vectors beyond power.

5. Capital Allocation and Shareholder Returns

Strong cash generation and ongoing share repurchases reinforce management’s commitment to capital discipline. With $530M in cash and $175M remaining on the buyback authorization, Xcelis maintains ample flexibility to invest in organic and inorganic growth opportunities while returning capital to shareholders.

Key Considerations

The quarter highlighted Xcelis’s ability to navigate end-market volatility, leveraging its power segment leadership and operational discipline to deliver above-plan results. However, the business remains exposed to cyclical swings in memory and general mature nodes, and the timing of a broader recovery is uncertain.

Key Considerations:

• Silicon Carbide Demand Remains the Bright Spot: Continued adoption in automotive, data center, and renewables supports long-term growth.
• China’s Share of Revenue Is Elevated: At 59% of sales, regional concentration exposes Xcelis to geopolitical and policy risk.
• Memory Recovery Is Pushed to Late 2024/2025: Management expects DRAM and NAND to rebound next year, but near-term contribution remains muted.
• CS&I Services Under Pressure: Lower fab utilization and tool usage have trimmed services revenue, with only gradual recovery expected.
• Backlog and Evaluation Activity Provide Visibility: $1.1B backlog and multiple ongoing tool evaluations underpin revenue outlook and customer stickiness.

Risks

Xcelis faces material risks from end-market cyclicality, particularly if memory and mature logic recoveries are further delayed. Heavy exposure to China increases vulnerability to trade restrictions, policy changes, and customer concentration. Margin gains are dependent on sustaining favorable mix and executing planned cost actions, while competitive threats in advanced logic and power remain persistent. Any disruption in fab buildouts, consumer electronics demand, or global semiconductor capital spending could impact revenue linearity and backlog conversion.

Forward Outlook

For Q2 2024, Xcelis guided to:

• Revenue of approximately $245 million
• Gross margin around 43.5%
• Operating income of about $47 million
• EPS of $1.30

For full-year 2024, management expects:

• Second-half revenue to exceed first-half levels, led by power and a partial recovery in mature nodes
• CS&I revenue revised down to $250 million for the year
• Gross margin to remain above 45% for the long term, though quarterly mix will drive fluctuations

Management highlighted several factors that shape the outlook:

• Continued strength in silicon carbide and power tools globally
• Potential upside from memory and mature logic recovery, with timing still uncertain

Takeaways

Xcelis’s Q1 results reinforce its leadership in implant-intensive power markets, with silicon carbide adoption driving both growth and margin gains. Operational discipline and product mix are insulating the business from memory softness, but the path to a second-half rebound is still tied to macro and end-market recovery.

• Power and Silicon Carbide Are Core Engines: Share gains in these segments underpin both backlog and future growth, particularly in China and Japan.
• Margin Expansion Is Sustainable But Not Guaranteed: Mix, cost actions, and R&D discipline remain critical as volume in cyclical segments fluctuates.
• Watch for Memory and Mature Node Recovery: The timing and magnitude of a rebound in these markets will determine if Xcelis can hit its 2025 growth ambitions and sustain current profitability levels.

Conclusion

Xcelis enters the second quarter with strong backlog and margin momentum, but remains reliant on a recovery in memory and mature nodes to unlock its full growth potential. Silicon carbide and power segment leadership provide a durable foundation, while operational initiatives and capital discipline support resilience through market cycles.

Industry Read-Through

Xcelis’s results and commentary offer a clear read-through for the broader semiconductor equipment sector: Power semiconductors, especially silicon carbide, are driving capex and tool demand, with automotive, data center, and renewables as structural tailwinds. Memory and mature logic remain cyclical weak spots, but quoting and fab activity point to a potential second-half inflection. Margin management via product mix and operational efficiency is a key differentiator, especially as industry players navigate regional concentration and geopolitical risk. Investors should watch for shifts in fab utilization, memory orders, and China policy, as these will shape both tool demand and sector profitability in coming quarters.

ACLS Technology Semiconductor Power Devices Silicon Carbide Capital Equipment China Margin Expansion