Zipper Fin


Zipper Fin Heatsinks are manufactured by the application of extreme pressure to a piece of aluminum or copper. Afterward, we manufacture fins to the desired height, thickness, and shape. Lastly, we bond the fins to the heat sink metal base.
This type of Heatsink is often recommended when you require a thin fin with limited thermal performance. They are characterized by a high tooling cost and low cost per piece.

If you are not sure that a Zipper Fin Heatsinks is the right choice for your needs, our experts have knowledge that can help you make the right decision for both cost, tooling time, and delivery date.

Some of the benefits include:

  • Thin fins similar to the folded fin heatsinks
  • More suitable for fan-sink applications than folded fin heatsinks because the top of the Zipper fin heatsink is open.
  • Zipper Fin Heatsinks can satisfy a higher production rate than folded fin
  • We braze and solder the fins in vacuum furnaces
  • Fins can be 0.008” thick
  • Copper and aluminum fins are available

Engineering Support

Briefly, as part of design work, our engineers apply advanced 3D modeling. Also, we are using cutting-edge CFD tools to optimize your heat transfer project. In addition, we provide our customers 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 design change and reduce manufacturing costs.

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

CSI 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 you from concept to production globally.

We ensure secure facilities, traceability, and document control.

Call or e-mail us today to see what your Zipper Fin Heatsinks options are. We feel confident that you will love our product costs and customer service during the sale and afterward.


Contact us

zipper fin heatsink

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


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