Advanced Fin Type Heat Sinks


Bonded Fin Heat Sink               Wavy Folded Fin               Copper Skived Fin Heat Sink  

Bonded Fin

To Learn More About Bonded Fin Assemblies!

Visit the Bonded Fin Heat Sink page.


Zipper Fin

What are Zipper Fins?

Zipper fins are manufactured from stamped material typically aluminum or copper. They are folded into shape with interlocking grooves, this provides structurally stability while allowing for very high fin densities and fin aspect ratios. To form heat sink assembly they are typically soldered, brazed, or epoxied to a base.

Zipper fins are the most cost efficient method for high density heat sinks, as they have increased surface area as well as design flexibility when integrating heat pipes, fans or blowers.

Materials Used to Manufacture Zipper Fins:

  • Copper
  • Aluminum

Skived Fin

What is a Skived Fin?

Skived heat sinks are constructed from a single piece of material and as a result have no thermal resistance between the base and the fins, unlike bonded or brazed heat sinks which have interface joints. These heat sinks are manufactured by precisely slicing the top of the base and folding it back and repeating at regular intervals to create the fins.

The skiving process enables high fin density and thin fin heat sink geometries which provide optimal thermal performance. Aavid standard copper skived fin heat sinks are available with Shurlock pin attachments for reliable mounting and easy assembly.

Browse Skived Fin Heat Sinks!

Folded Fin

What is a Folded Fin Heat Sink?

Folded fin heat sinks are typically manufactured from sheets of aluminum or copper but can also be constructed from addition materials, see list below. The sheet of material is folded back and forth to produce fins. These fins can be arranged in multiple configuration including lanced, offset, wavy and louvered as well as many others.

Similar to Zipper fins, folded fins are soldered, brazed or epoxied to a base to form a heat sink assembly.


Materials Used to Manufacture Zipper Fins:

  • Aluminum
  • Carbon Steel Alloys
  • Copper
  • Cupro Nickel
  • Inconel
  • Nickel Alloys
  • Stainless Steel


Design Configuration Include:

  • Custom
  • Flat Crested
  • Lanced and Offset
  • Louvered
  • Multi-Louvered
  • Round Crested
  • Wavy or Ruffled