Aehr Test Systems vs MKS Instruments
Side-by-side comparison of AI visibility scores, market position, and capabilities
Aehr Test Systems (AEHR) reported ~$80M revenue in FY2024. Provides wafer-level burn-in and test systems for silicon carbide semiconductors used in EV powertrains and solar inverters. HQ: Fremont, CA.
About
Aehr Test Systems is a semiconductor test equipment company specializing in wafer-level burn-in and test systems, with a dominant position in testing silicon carbide (SiC) power semiconductors. Silicon carbide devices are essential components in electric vehicle inverters, solar inverters, and industrial power systems — they handle high voltages and temperatures where traditional silicon fails. Before shipping, SiC semiconductors must undergo burn-in testing at elevated voltage and temperature to screen out early-life failures, and Aehr's FOX-XP wafer-level system performs this screening more efficiently than component-level testing.
MKS Instruments (MKSI) reported $3.6B revenue in FY2024, up 15% YoY. Critical supplier of instruments and components for semiconductor manufacturing. HQ: Andover, MA. Market cap ~$6B.
About
MKS Instruments, Inc. is a leading provider of instruments, subsystems, and process control solutions for semiconductor manufacturing, as well as electronics, life sciences, and industrial markets, headquartered in Andover, Massachusetts. Founded in 1961, MKS develops the precision instruments — gas flow controllers, pressure sensors, RF power systems, vacuum components, and spectrometers — that semiconductor fabs use to control deposition, etch, and cleaning processes with extreme precision. The company reported revenues of $3.6B in FY2024 (pro forma including Atotech, acquired in 2022), up approximately 15% year-over-year.
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