Coverfoto van CoolSem Technologies
CoolSem Technologies

CoolSem Technologies

Productie halfgeleiders

Eindhoven, Brabant 918 volgers

Cool at the Core

Over ons

CoolSem’s patented wafer-level thermal management technology helps chips run cooler, last longer, and perform beyond today’s limits. While traditional cooling techniques remove heat from the package or system level, the real challenge lies deeper. In the thermal resistance of the chip’s substrate. But the challenge goes deeper than heat itself. As devices cycle through temperature changes, the different materials inside each chip expand and contract at different rates, adding mechanical stress on top of thermal resistance. Over time, this stress degrades interfaces and compounds the very heat problem it’s meant to control. CoolSem removes the substrate, the barrier to efficient heat flow. And we replace it with our patented wafer-level carrier that conducts heat up to 15× better. 15× better thermal pathway, zero layout constraints. Our patented WaLTIS® wafer-level technology reduces thermal resistance by up to 15× and eliminates hotspots that degrade device performance and reliability. At the same time, the architecture remains dielectrically neutral, fully compatible with existing device layouts and electrical isolation schemes. Do you want to know more? Visit or website or contact us by sending us message via LinkedIn or info@coolsemtechnologies.com.

Website
www.coolsemtechnologies.com
Branche
Productie halfgeleiders
Bedrijfsgrootte
11 - 50 medewerkers
Hoofdkantoor
Eindhoven, Brabant
Type
Particuliere onderneming
Opgericht
2025

Locaties

Medewerkers van CoolSem Technologies

Updates

  • 𝟭𝟭 𝗘𝘃𝗲𝗻𝘁𝘀. 𝗢𝗻𝗲 𝗠𝗶𝘀𝘀𝗶𝗼𝗻. 𝗞𝗲𝗲𝗽𝗶𝗻𝗴 𝘀𝗲𝗺𝗶𝗰𝗼𝗻𝗱𝘂𝗰𝘁𝗼𝗿𝘀 𝗰𝗼𝗼𝗹. Wherever the semiconductor industry discusses the future of thermal management, CoolSem is part of the conversation. This autumn you will find CoolSem Technologies at 11 leading semiconductor and photonics events across Europe and in Asia. From international conferences and major trade shows to technical speaking opportunities, we will be joining the conversations that are shaping the future of semiconductor innovation. We would love to meet and discuss the thermal challenges that are shaping your next-generation devices. 𝗖𝗼𝗼𝗹 𝗮𝘁 𝘁𝗵𝗲 𝗖𝗼𝗿𝗲. 𝗠𝗲𝗲𝘁 𝘂𝘀 𝘁𝗵𝗶𝘀 𝗳𝗮𝗹𝗹.

  • 🌡️ 𝗖𝗼𝗼𝗹𝗦𝗲𝗺 𝗦𝘂𝗺𝗺𝗲𝗿 𝗖𝗵𝗮𝗹𝗹𝗲𝗻𝗴𝗲 🌡️  Win your CoolSem thermometer, a true collector's item, and survive the heatwave!   Europe is melting. Your ice cream lasts 30 seconds. Your laptop sounds like it is preparing for take-off and your phone is too hot to charge. Fortunately, CoolSem Technologies engineers spend their days thinking about heat... just at a much smaller scale. See if you can find the 16 words listed below.   😎 𝗕𝗼𝗻𝘂𝘀 𝗤𝘂𝗲𝘀𝘁𝗶𝗼𝗻 𝘞𝘩𝘪𝘤𝘩 𝘪𝘴 𝘩𝘢𝘳𝘥𝘦𝘳 𝘵𝘰 𝘤𝘰𝘰𝘭? ☐ Your office without air conditioning ☐ Your laptop during a Teams call ☐ A next-generation semiconductor running AI (Spoiler: That's why CoolSem exists) 👉 Share your answer in the comments. 🏆 𝙋𝙧𝙞𝙯𝙚 The three best answers will each win an official CoolSem thermometer, a genuine collector's item and probably the coolest thing to own this summer. Plus, of course, eternal fame. 😎 Stay cool this summer. We will take care of the chips. ❄️ Or, as we like to say: 𝗖𝗼𝗼𝗹 𝗮𝘁 𝘁𝗵𝗲 𝗖𝗼𝗿𝗲.

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  • 𝗘𝘂𝗿𝗼𝗽𝗲'𝘀 𝗳𝘂𝘁𝘂𝗿𝗲 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗯𝘂𝗶𝗹𝘁 𝗼𝗻 𝗱𝗲𝗲𝗽-𝘁𝗲𝗰𝗵 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗶𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻 𝗻𝗲𝗲𝗱𝘀 𝗰𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻. We are proud to be co-funded by the European Union and EFRO Oost 2021-2027 to accelerate the development of our WaLTIS wafer-level cooling technology, helping address one of the biggest challenges in next-generation semiconductors: heat. By strengthening Europe's semiconductor ecosystem, we are contributing to technologies that improve performance, energy efficiency, and technological sovereignty. 𝗖𝗼𝗼𝗹 𝗮𝘁 𝘁𝗵𝗲 𝗖𝗼𝗿𝗲. 𝗦𝘁𝗿𝗼𝗻𝗴 𝗶𝗻 𝗘𝘂𝗿𝗼𝗽𝗲. Read more about how European innovation funding helps turn breakthrough ideas into industrial reality 👉 https://lnkd.in/d8-DjMYP

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  • Before everyone heads off for a well-deserved summer break, the CoolSem Technologies team gathered for the annual Summer Drinks. 🍹☀️   A big thank you to our amazing Happiness Committee Pieter Heersink and Natasha Gruginskie for organizing another great evening filled with good food, great conversations, and plenty of laughs. Now it is time to recharge the people behind our cool technology. Have a fantastic summer, everyone! 😎

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  • 🏆 Recognition is meaningful when it reflects the problem you are solving. Heat is rapidly becoming one of the biggest constraints on next-generation semiconductors. As device performance continues to increase, thermal management is rapidly becoming a critical bottleneck affecting efficiency, reliability, lifetime, and scalability. At CoolSem Technologies, we believe that thermal management must evolve from a supporting function to a core design consideration for next-generation semiconductor and photonic devices. We are proud that the Gerard & Anton Award 2026 recognizes CoolSem Technologies' mission to address this challenge through wafer-level thermal innovation, helping pave the way for cooler, more reliable and more manufacturable semiconductor devices. 👉 Read the full article: https://lnkd.in/e8AyPv3d

    • CoolSem wins Gerard & Anton Award 2026
  • We are proud to see CoolSem Technologies featured by IO+ NL! 🚀 A big thank you to Mauro Mereu and the editorial team for taking the time to tell our story and highlight the importance of wafer-level thermal management for the next generation of semiconductors. A great read for anyone interested in where chip cooling is heading. 📖 Read the article on IO+: https://lnkd.in/eu4Vk7VD 🙏 Mauro Mereu and IO+ NL

  • 𝗪𝗲 𝗮𝗿𝗲 𝗽𝗿𝗼𝘂𝗱 𝘁𝗼 𝗮𝗻𝗻𝗼𝘂𝗻𝗰𝗲 𝘁𝗵𝗮𝘁 CoolSem Technologies 𝗵𝗮𝘀 𝘄𝗼𝗻 𝘁𝗵𝗲 Gerard & Anton 𝗔𝘄𝗮𝗿𝗱𝘀 𝟮𝟬𝟮𝟲. It turns out that being 𝘾𝙤𝙤𝙡 𝙖𝙩 𝙩𝙝𝙚 𝘾𝙤𝙧𝙚 is not just our tagline, it is becoming a necessity for the future of semiconductors and photonics. This 🏅recognition is an important milestone for our team and validates our belief that thermal management must become a core design consideration for next-generation semiconductor and photonic devices. A sincere thank you to our colleagues, the jury, our investors, partners, and the broader Brainport Eindhoven ecosystem for their continued support and trust. This award motivates us even more as we continue to turn strong technical potential into industrial proof. Andre van Geelen, Pieter Heersink, Kees Steenbergen, Fred Roozeboom  🙏 Mauro Mereu and IO+ NL No deep-tech success story is built alone. We would like to thank the many companies, partners, and organizations that have supported CoolSem over the past year. This award is a reflection of a much broader ecosystem effort. Therefore, this is the perfect occasion to share a sincere thank you: PhotonDelta Brabant Startup Fonds BV Rabobank TWICE Eindhoven, building I high tech I success High Tech Campus Eindhoven Brainport Eindhoven Eindhoven University of Technology Radboud University CITC - Chip Integration Technology Center HTGF | High-Tech Gründerfonds Brabantse Ontwikkelings Maatschappij (BOM) SHIFT Invest KBC Bank & Verzekering Focus Fund And of course our team! 🤩

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  • CoolSem Technologies heeft dit gerepost

    Brainport is famous for ASML. What’s less well known is the next generation of semiconductor and photonics companies already emerging here. Our new report shows there’s much more happening. Since 2010, semiconductor companies in Brainport have raised €908 million. Brainport Eindhoven now ranks 5th among 14 European semiconductor regions and has already raised €343 million in 2026. Together, the Netherlands ranks #2 in Europe for semiconductor funding in 2026 YTD. The Dutch ecosystem is also one of the few in Europe where much of the semiconductor value chain comes together: from chip design and photonics to equipment, metrology, packaging and advanced manufacturing, with companies such as ASML, NXP Semiconductors, Philips, SMART Photonics and Axelera AI. The attached PDF highlights some of the key insights. The report was compiled by Matthijs Bulsink (BRAVENTURE) in collaboration with the Gerard & Anton Foundation, based on Dealroom.co data and complemented with ecosystem insights from organizations including PhotonDelta, imec, TNO, Eindhoven University of Technology, High Tech Campus Eindhoven and HighTechXL. On 2 July, during the Gerard & Anton Awards, we’ll go one step further and present The State of the Brainport Deep Tech Startup Ecosystem. For the first time, we’ll combine the Semiconductor, Energy and HealthTech ecosystems into one complete picture. Curious? The full Semiconductor & Photonics report is in the first comment. #Brainport #DeepTech #Semiconductors #Photonics

  • 𝗜𝗺𝗽𝗼𝘀𝘀𝗶𝗯𝗹𝗲 𝘁𝗼 𝗶𝗴𝗻𝗼𝗿𝗲 𝘁𝗵𝗲 𝘀𝘁𝗿𝗲𝗻𝗴𝘁𝗵 𝗼𝗳 𝘁𝗵𝗲 𝗗𝘂𝘁𝗰𝗵 𝗱𝗲𝗲𝗽-𝘁𝗲𝗰𝗵 𝗲𝗰𝗼𝘀𝘆𝘀𝘁𝗲𝗺 🌐   CoolSem Technologies participated in the Hello Tomorrow 𝗚𝗹𝗼𝗯𝗮𝗹 𝗦𝘂𝗺𝗺𝗶𝘁, joining innovators, investors, corporates, and policymakers from across the international deep-tech community. After meeting with strategic partners, technology leaders, and members of the broader Dutch high-tech ecosystem, one message stood out: 𝗱𝗲𝗲𝗽 𝘁𝗲𝗰𝗵 𝗶𝘀 𝗮 𝘁𝗲𝗮𝗺 𝘀𝗽𝗼𝗿𝘁.   Building breakthrough technologies requires far more than a great idea or a strong engineering team. Success depends on an entire ecosystem of universities, research institutes, suppliers, manufacturing partners, customers, investors, and policymakers working together.   The Netherlands has built a remarkably strong ecosystem around deep technology, combining expertise in semiconductors, photonics, advanced manufacturing, materials, and high-tech systems within a uniquely concentrated geographic region.   A particular highlight of the summit was the Discover Dutch DeepTech pavilion, organized by Techleap, RVO - Netherlands Enterprise Agency, and TNO. By presenting Dutch innovation collectively rather than individually, these initiatives help companies access international opportunities that would be difficult to create alone.   At CoolSem Technologies, we are fortunate to be part of a strong and supportive innovation ecosystem. We are grateful for the support, expertise, and collaboration provided by PhotonDelta, PhotonicsNL, Eindhoven University of Technology, Radboud University, and the broader Brainport Eindhoven ecosystem.   As global competition in semiconductors, photonics, AI infrastructure, and advanced manufacturing intensifies, one thing becomes increasingly clear: The companies that succeed will not stand alone. They will be supported by the strongest ecosystems. 👉 Read our blog: Cool Technology, Warm Connections https://lnkd.in/etBhXGe6

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  • At CoolSem Technologies, innovation starts with curiosity. We encourage our team to explore new ideas, technologies, and approaches beyond their immediate area of expertise. Last week, Rosalinda (Linda) van Leest attended the 𝗟𝗮𝘀𝗲𝗿 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴 𝗼𝗳 𝗪𝗶𝗱𝗲-𝗕𝗮𝗻𝗱𝗴𝗮𝗽 𝗠𝗮𝘁𝗲𝗿𝗶𝗮𝗹𝘀 workshop organized by Fraunhofer-Gesellschaft ISE in Freiburg, where she connected with researchers from different disciplines and gained insights into emerging processing techniques. These kinds of learning opportunities are invaluable. Exposure to new materials, manufacturing methods, and scientific perspectives often sparks the ideas that lead to breakthrough engineering solutions. We are pleased to see the inspiration and practical insights Linda brought back to support the ongoing development of our WaLTIS® technology. After all, advancing semiconductor cooling requires not only deep expertise, but also the curiosity to keep learning.

    • CoolSem on the Road:

Curiosity fuels innovation. 
I always enjoy bringing new ideas 
and inspiring perspectives back 
to our WaLTIS development.

Said Linda van Leest - Development Engineer

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