Bonded Fin Heatsinks

Bonded Fin Heatsinks Brazed Fin

Cooling Source manufacture bonded fin heatsinks with aluminum or copper metal sheets. In addition,  by using an extrusion process. Consequently, the fins go through the epoxy, or a solder brazes process. that is to say, the fin is bonded to the base.

CSI’s design bonded heatsinks to help meet your needs. Should you have any questions, our knowledgeable consultants can discuss your specific needs and answer any questions you may have. Furthermore,  It is essential to choose the right product for cost, delivery time, and effectiveness. Consequently, the choice you make can be crucial to your success.

Also, bonded fin heatsinks are suitable for high-power applications. In addition, they provide low thermal resistance. Furthermore, forced air cooling should be considered. 

Benefits and characteristics:

– Better aspect ratio than thin fin extrusions

– Rohs compliant and high thermal conductivity epoxy, or soldered fins

– Fins can be as thin as 0.008. “

– Fins can be 2 inches or higher

– The solid mechanical bond between the base and the fins

– Excellent process for large heat sinks.

Applications for Bonded fin heatsinks include:

– Thermoelectric Modules – TECs

– Un-interruptible Power Supplies – UPSs

– Variable Speed Motor Controls

– AC Welding Switches

– Power Rectification Equipment

– Laser Power Supplies

– Traction Control Motor Drives

Cooling Source manufacture black anodized  bonded fin heatsinks

However, we don’t recommend it due to the high cost. Also, the black finish doesn’t contribute much to the reduction of heat in forced convection. Clear, gold chromate is often applied to protect the bonded fin heatsinks from corrosion.

CSI manufactures Bonded Fin Heatsinks made of Aluminum and copper.

We have decades of experience in Bond Copper Fins into Aluminum.

Bases. Copper Fins are assembled in combination with Aluminum Fins to save cost and increase thermal performance in some applications.

Engineering Support

Briefly, as part of the bonded fin heatsink design work, our engineers apply advanced 3D modeling. Also, we are using cutting-edge CFD tools to optimize your bonded fin heatsink heat transfer project. In addition to bonded fin heatsinks, we provide our customers with a complete cooling solution to meet specific requirements in a timely and cost-effective manner. Also, you can count on our Mechanical Engineers to assist with bonded fin design change and reduce manufacturing costs.

Our fully equipped lab is available to valid your designs, testing, and inspect.

Our team can help you meet tight schedule requirements while allowing you to focus on your business’s core competencies.

Also, we stand by, ready to support your bonded fin heatsink project from concept to production globally.

Finally, a simple call or e-mail will put you in touch with the experts who have the answers you require.


Contact us
Purchase our heatsinks

bonded fin heatsinks

2021 Las Positas Ct, Ste 101
Livermore, CA 94551
Phone: (925) 292-1293
Fax: (925) 292-5061


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Heat pipes, extruded aluminum heatsinks, thermal design.