Aehr Test Systems
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- Aehr Test Systems, headquartered in Fremont, California and founded in 1977, provides advanced test solutions for burning-in, testing, and stabilizing semiconductor devices in wafer level, singulated die, package part, and system level form; its core products include the FOX-P family of systems such as the multi-wafer FOX-XP and single-wafer FOX-CP for logic, memory, photonic, power semiconductors including silicon carbide and gallium nitride devices, FOX WaferPak aligners and contactors for full-wafer testing up to 300mm, FOX DiePak carriers and loaders for handling up to 1024 singulated die or modules in parallel, and high-power Sonoma and Tahoe packaged part systems supporting up to 2000W per device with protocol-aware testing for SPI, I2C, and PSI5; these solutions serve applications in electric vehicles, AI accelerators, GPUs, high-performance computing, solar and wind power, data centers, telecommunications, and optical photonics, with thousands of systems installed worldwide. The company operates globally through direct sales and distributors, targeting automotive, mobility, computing, and power semiconductor markets. In 2024, Aehr completed the acquisition of Incal Technology, Inc., integrating high-power packaged part reliability test solutions like the ultra-high-power Sonoma family for AI and HPC processors to expand into the rapidly growing AI semiconductor sector; in November 2025, Aehr announced a partnership with ISE Labs for wafer-level test and burn-in tailored to high-performance computing and AI applications.
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