Semiconductor Burn-In & Test Leader Riding the Silicon Carbide Wave

Aehr Test Systems designs, manufactures, and sells wafer-level burn-in and test equipment for the global semiconductor industry. The company's systems are used to test integrated circuits and discrete power semiconductors at the wafer level before singulation, ensuring reliability and quality for mission-critical applications.

The company generates revenue through two primary channels: (1) system sales of its FOX-P™ and FOX-XP™ wafer-level burn-in systems, which range in price from $2 million to $5 million per system, and (2) recurring revenue from consumable WaferPak™ contactors, test fixtures, and aftermarket services. Customers include leading SiC device manufacturers, IDMs, and foundries across North America, Europe, and Asia.

Headquartered in Fremont, California, Aehr has shipped over 1,200 systems worldwide and has established a particularly strong presence in Asia, where the majority of SiC device manufacturing capacity is located. The company employs approximately 200 people and operates with a highly asset-light model, outsourcing significant manufacturing while focusing on design, final assembly, and customer support.

• Near-Term Growth Drivers: Aehr's order pipeline remains robust, with management reporting record backlog entering fiscal 2026. The company has identified a "second wave" of SiC capacity expansion among existing customers, as well as new customer wins in Europe and North America. Management has guided for fiscal 2026 revenue in the range of $100-$110 million, representing growth of over 40% year-over-year.

• EV Adoption Acceleration: SiC adoption in EV powertrains is transitioning from premium models to mainstream vehicles, with nearly every major automotive OEM announcing SiC-based inverter platforms. Each EV containing SiC power electronics requires significantly more burn-in capacity than traditional silicon devices, directly expanding Aehr's served market.

• Geographic Expansion: Aehr is investing in expanded customer support and applications engineering capabilities in Europe, where SiC manufacturing capacity is growing rapidly. The company is also pursuing opportunities in the emerging SiC supply chain in the United States, supported by CHIPS Act incentives.

• Product Innovation Pipeline: The company is developing next-generation FOX-P™ systems with increased wafer-handling capacity and enhanced parallel-testing capabilities. Additionally, Aehr is exploring opportunities in the growing GaN power device market, which presents similar reliability challenges to SiC and could represent a significant incremental market opportunity.

The company's revenue growth has been exceptional, with fiscal 2025 revenue of $70.4 million representing a 30% increase over the prior year. However, operating margins have compressed as Aehr has deliberately invested in R&D and sales infrastructure to support future growth. The reported EPS of $-0.23 reflects non-cash charges and one-time items, while non-GAAP profitability remains solid.

Looking forward to fiscal 2026, we model revenue of approximately $105 million, representing over 45% growth, driven by the conversion of record backlog and continued SiC capacity expansion among customers. Gross margins should benefit from improved operating leverage and a higher mix of consumable revenue, while operating margins should expand meaningfully as revenue growth outpaces fixed cost increases.

The semiconductor test and burn-in equipment market is estimated at approximately $5 billion annually, with the wafer-level burn-in segment representing a $700 million to $1 billion opportunity growing at 20%+ annually. Within this market, Aehr has established a dominant position in the SiC-specific wafer-level burn-in niche.

The competitive landscape includes:

• Advantest Corporation: The largest player in semiconductor test equipment, primarily focused on final test and system-level test. Advantest has limited presence in wafer-level burn-in, but could potentially enter the market.
• Teradyne, Inc.: Similar to Advantest, Teradyne dominates the automated test equipment market but has minimal wafer-level burn-in exposure.
• KLA Corporation: Offers process control and inspection equipment, including some reliability testing solutions, but does not directly compete in wafer-level burn-in.
• Ultra Clean Technologies (UCT): A smaller competitor that offers wafer-level burn-in solutions, though with significantly less SiC-specific expertise than Aehr.

Aehr's primary competitive advantage lies in its first-mover position in SiC wafer-level burn-in, having worked closely with leading SiC manufacturers for over a decade to develop solutions optimized for the unique requirements of SiC devices. This deep customer collaboration has resulted in a technology platform that competitors would require significant time and investment to replicate.

We value Aehr using a combination of discounted cash flow (DCF) analysis and comparable company multiples, given the company's high growth trajectory and evolving profitability profile.

DCF Analysis: Using a 12% discount rate and 3% terminal growth rate, with assumptions of 35% revenue CAGR through 2030 and expanding operating margins to 25% by 2029, we derive a fair value of approximately $95 per share. Our DCF incorporates the company's strong balance sheet and capacity for self-funded growth.

Comparable Company Analysis:

Aehr trades at a significant premium to its semiconductor capital equipment peers on both EV/Revenue and P/E multiples. This premium reflects the company's superior growth rate and dominant position in the high-growth SiC test market. However, given the company's small size and the large addressable market opportunity ahead, we believe a premium is warranted. Our $95 price target implies a forward EV/Revenue multiple of approximately 29x on fiscal 2026 estimates, which we view as reasonable given the company's growth trajectory.

• SiC Market Cyclicality and Concentration: Aehr's growth is heavily dependent on the SiC power semiconductor market, which is subject to cyclical demand patterns and potential overcapacity. Additionally, a significant portion of revenue is concentrated among a few large customers, creating revenue concentration risk if any major customer delays or cancels orders.

• Technology Disruption: The semiconductor industry is characterized by rapid technological change. Alternative test methodologies, such as system-level test or advanced final test approaches, could potentially reduce the need for wafer-level burn-in. Additionally, improvements in SiC device manufacturing quality could reduce the necessity for extensive burn-in screening.

• Competitive Entry: The attractive growth of the SiC wafer-level burn-in market could attract larger, well-capitalized competitors. Advantest, Teradyne, or other test equipment providers could develop competing solutions, potentially pressuring Aehr's market share and pricing power.

• High Valuation and Volatility Risk: With a beta of 3.09 and trading at approximately 173x forward earnings, AEHR shares carry significant valuation risk. Any disappointment in quarterly results or SiC market growth expectations could result in substantial share price declines. The elevated short interest of 14.03% of float adds to potential volatility.

• Supply Chain and Geopolitical Risks: Aehr's manufacturing relies on a complex supply chain, and the company sources components from various countries. Geopolitical tensions, particularly between the US and China, could impact the company's ability to serve customers in Asia or access critical components.