Semiconductors Startups

Aehr Test Systems designs and sells wafer-level, singulated-die, and module test and burn-in equipment (including FOX-XP, FOX-NP, FOX-CP, and Sonoma systems with WaferPak and DiePak consumables) used to screen semiconductors for reliability. Its systems serve chip and device makers producing silicon carbide power devices, silicon photonics, gallium nitride, AI/data center processors, and automotive and mobile sensors.

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Aeluma develops semiconductor chip technology aimed at scalable manufacturing for consumer and industrial applications including mobile phones, AI, AR/VR, and autonomous driving. The company focuses on advancing chip-level innovation to broaden adoption across multiple industries.

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Aeonsemi is a fabless semiconductor company that designs timing and networking silicon for AI infrastructure, including Ethernet transceivers, automotive Ethernet chipsets, and silicon oscillators and timing devices. Its products target broadband access, enterprise networking, Wi-Fi backhaul, and Physical AI applications such as humanoid robots, automotive, and UAVs.

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Akoustis designs and manufactures high-performance RF filters using its XP3F technology for high-frequency, ultra-wideband applications servicing frequencies from 8 to 20 GHz and beyond. Through RFMi, it also develops and markets RF components and modules for low-power and wireless communications.

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American Semiconductor develops and manufactures ultra-thin chip technology, including its Semiconductor-on-Polymer (SoP) wafer level chip scale packaging for thin-device applications such as chip-on-flex and multi-chip packaging. It provides design, assembly, test, and custom engineering services for the semiconductor industry from its facility in Boise, Idaho.

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Arc Suppression Technologies develops electronic power contact arc suppression technology and publishes technical research on contact arcing, arc-flash events, and the electrical end-of-life of power relays and contactors. The company serves the electromechanical and electronic power switching industry with products and concepts such as the Contact Arc Suppression Factor (CASF) and EPCAS.

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Ascenium is developing a General-Purpose Accelerator (GPA), a microprocessor designed to run generic software with up to 4x efficiency over conventional CPUs for data-center workloads. The company targets data centers seeking to reduce energy costs and carbon footprint.

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ASP (ASP Isotopes) is an advanced materials company developing proprietary technology and processes to produce and enrich isotopes for markets including nuclear medicine and therapeutics, green energy generation, and quantum computing. Its initial focus is constructing plants in South Africa to produce highly enriched isotopes for the nuclear medicine market.

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Avalanche Technology develops space-grade non-volatile MRAM memory designed to survive radiation, retain data permanently, endure unlimited writes, and commit data in nanoseconds for space missions and systems. Its products target aerospace and space-system engineers building spacecraft and satellite hardware.

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Bluespec develops tools and IP for hardware and embedded systems developers, with a focus on RISC-V technology for core evaluation, software development, acceleration, and verification. The company also maintains an open source family of RISC-V cores.

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Cactus Materials develops and manufactures semiconductor materials and devices, with expertise across silicon, SiC, and GaAs as well as photonics and RF power applications. The company operates its own fabrication operations and serves the semiconductor industry.

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CoolCAD Electronics designs and fabricates wide bandgap silicon carbide (SiC) semiconductor transistors and integrated circuits for power electronics, high-temperature electronics, green energy, and deep ultraviolet optical sensing and imaging. Its SiC devices operate at temperatures beyond 400°C and target higher-voltage, higher-power applications than conventional silicon chips.

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DJ MicroLaminates develops thin and thick dry film photoresist materials that let semiconductor and electronics device manufacturers build smaller electronic devices, including applications in MEMS, wafer level packaging, and high aspect ratio structures. It serves universities, research centers, consumer and medical device makers, and chipmakers as a supplier of advanced photosensitive materials.

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Femtometrix builds Harmonic series metrology systems that use Optical Second Harmonic Generation (SHG) to optically detect Non-Visual Defects on patterned and unpatterned semiconductor wafers. Its non-destructive, contactless characterization tools serve semiconductor fabs and research labs to improve yield.

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Green Source Holdings is an Austin-based holding company that identifies, builds, and scales technology companies focused on resource efficiency and disruptive innovation. Its portfolio targets edge AI, robotics, defense, and energy markets, with companies such as Octavo Systems building System-in-Package computing modules.

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HexaTech develops and commercializes aluminum nitride (AlN) semiconductor material, using a proprietary crystal growth process to produce single-crystalline AlN boules and substrates with far fewer defects than competing technologies. Its substrates support the fabrication of high-Al-content AlGaN and other III-nitride semiconductor devices.

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Injectsense develops implant-based digital health systems that use semiconductor technology to provide medical staff with continuous long-term monitoring data for therapy management, with an ophthalmology focus including eye-pressure markers. The company combines ultra-low power IC design, telemetry, and miniaturization with medical device and software expertise.

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InspireSemi builds Thunderbird, a RISC-V-based "supercomputer-cluster-on-a-chip" datacenter accelerator for high-performance computing, AI, and graph analytics workloads. It targets compute-intensive industries including financial services, computer-aided engineering, energy, climate modeling, and life sciences and drug discovery.

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Inspirit IoT develops Xcelo, a chip-agnostic, general-purpose high-level synthesis (HLS) tool for designing FPGA hardware, including machine-learning IPs and IP integration. The tool targets hardware designers, offering higher design productivity than traditional RTL workflows through LLVM IR and polyhedral model-based optimizations.

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Interlink develops sensing technologies based on its patented Force Sensing Resistor technology, spanning position sensing, rugged pointing controls, gas sensing, printed electronics, smart textiles, membrane keypads, and graphic overlays. It supports custom human-machine interface device programs across the sensing stack, electronics, mechanical packaging, firmware, software, and manufacturing readiness.

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KemLab Inc. manufactures photoresists and related photolithography materials, including SU-8 epoxy resist products for MEMS and microfluidic device fabrication. It serves the electronics industry across North American and overseas markets from its facility in Woburn, Massachusetts.

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Lightning Silicon Technology designs and produces OLED microdisplays, silicon backplane wafers, and all-plastic Pancake optics for AR/VR/MR headsets and display modules. The company, a spin-out of Kopin Corporation, supplies these components to OLED foundries and headset manufacturers.

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Mixed-Signal Devices builds an all-digital, CMOS-based precision timing platform, including oscillators and clock-generation technology, that replaces legacy analog clock chains with multi-gigahertz timing and sub-20 femtosecond jitter. Its clocks target AI infrastructure and GPU fabrics, 5G base stations, and automotive systems such as radar and ADAS.

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Mobix Labs designs 5G wireless and advanced communication technologies, including switches, beamformers, frequency converters, RF components, and electromagnetic interference shielding and filtering for critical systems in demanding environments. It operates through several product groups (including EMI Solutions and Rage Systems) serving defense and industrial customers worldwide.

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