DAU Heatsinks

DAU Heatsinks develops and manufactures high-performance heat sinks for power semiconductors that control motors and electric drives. Whether water cooling, air cooling or heatpipes - our Solution Team accompanies you throughout the entire product development process: from simulation and mechanical testing to design, manufacturing and thermal validation. Together we develop the optimal heat sink solution for your requirements. In-house testing facilities (IGBT system testing, helium leaktest, pressure drop testing, infrared imaging, X-ray testing) can significantly reduce development time.


Together we develop the optimal heat sink solution for your requirements.

In-house testing facilities (IGBT system testing, helium leaktest, pressure drop testing, infrared imaging, X-ray testing) can significantly reduce development time.


DAU - The Company

DAU Heatsinks is an internationally recognized development partner and supplier of thermal solutions. We have been developing and producing complex cooling solutions for various sectors and industries for over 50 years. Starting from the Austrian company site in Ligist and a further production site in Slovenia, we drive new technologies and technical solutions for the cooling of components worldwide. 


In addition, as part of the Power Electronics Group, we are embedded in the Miba Group - a globally operating company with 31 sites and more than 7,000 employees.

Discover your career opportunities at DAU

Personal drive - common goal: At DAU Heatsinks, we develop and produce innovations and technologies for the future together with our customers. In doing so, we get the world moving in a more sustainable way. At a place where freedom is a matter of course and performance is valued.  

We continuously offer exciting jobs in different areas such as production, logistics, technology / sales and administration.


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Benefit from our experience.

Florian Feiertag
Key Account Manager

Get in touch with us.

Product ranges DAU Heatsinks

Water Coolers

Our water coolers are used to dissipate heat from specific power semiconductors, minimizing power dissipation during operation and protecting your power electronics from temperature and failure.


Air coolers

Whether profile solutions or specific bonded-fin heat sinks - together we will find the right solution for your product.



Our heatpipes provide optimal cooling by forced or natural convection - from standard cylindrical designs to customized heatpipe assemblies.


Do you have questions about our product ranges?

Florian Feiertag
Key Account Manager

Contact us, we will be happy to answer your open questions.

What makes our projects successful

At DAU Heatsinks, we take a solution-oriented approach, based on the individual requirements of our customers.



Get to know us!

Florian Feiertag
Key Account Manager

We will be happy to advise you from the very beginning.

Contact our DAU-Solution team.

Industries we serve

Users and manufacturers of power electronics components benefit from a reliable partner who can respond to specific power requirements with in-depth knowledge.

We are your contact for heat sink solutions in the industrial, energy, transportation/mobility, aerospace and medical technology sectors.

Manufacturing expertise

Mechanical processing, joining technology and assembly from a single source.



Mechanical processing

For mechanical processing (milling, drilling, grinding), we at DAU rely on state-of-the-art processing machines. The result is heat sinks with high precision - especially with regard to evenness and surface finish.

Joining technology

The joining of individual parts represents a decisive step in the production of assemblies and prototypes.  Depending on the application, the appropriate joining technology - vacuum brazing, hard soldering, soft soldering, press-fitting, adhesive bonding or friction stir welding - is used.


Assembly of high power resistors, e.g. iUXP intelligent resistors from sister company EBG.

Fans, connections for cooling media, blowers as well as sheet metal attachments.

State of the art manufacturing technology

Efficient manufacturing of components increases their service life. That's why at DAU, in addition to conventional methods, we work with the latest joining technology, such as vacuum brazing, in the development and production of cooling solutions

In 2021:
vacuum-brazed heat
> 1.000
different cooling solutions produced
satisfied customers supplied

Manufacturing competence vacuum brazing

Vacuum brazing enables the combination of different material pairings and allows a higher degree of freedom in the design. This technique is particularly suitable for developing a heat sink for complicated component geometries: it brings advantages due to a large-area connection. It also leads to higher strength and reduces distortion due to the low thermal stress in the joining process. 

This allows components to be joined in areas that are no longer accessible after assembly. For example, in this way, complex channel geometries can be realized inside a water heat sink, ensuring outstanding thermal efficiency.


You want to know which technology is the right one for your project?

Florian Feiertag
Key Account Manager

We advise you considering the entire development process.

Contact us


DAU Heatsinks was founded in 1970 and has been part of the Miba Group since 2010. With the introduction of innovative technologies such as vacuum brazing, the company has established itself internationally. Learn more about our milestones.

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Our customer base includes globally successful OEMs from various power electronics industries. We are proud of a strong network and joint development successes for heat sink solutions in almost all applications.

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Locally rooted - globally represented. Our high-performance heat sinks can be found in plants and motors around the globe. We ensure optimum service for our customers worldwide.

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We show you the advantages of our products

Florian Feiertag
Key Account Manager

Together we will find the optimal solution for your product development.

Our Solution Team will be happy to advise you and accompany you through the entire process.

What our customers rely on

  • Existing cooling solutions that fit the customer's application or specially adapted components.


  • Extensive know-how of manufacturing technologies and individual design as the basis for optimal thermal management.


  • Time and cost savings by covering the entire process chain (including mechanical processing) at DAU.


  • Sensible use of technological innovations & in-house testing facilities


  • All around one table: from development to thermal design to application engineering - excellent know-how transfer right from the start.


Documents and Certificates



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