High Fin Density Heat Sinks, Pre-Tooled, No NRE

ATS has a selection of pre-tooled zipper fin profiles that provide reliable cooling at a significant cost savings for customers. Zipper fin heat sinks are a cost-effective and lightweight alternative to other high fin density solutions, especially for high-volume production. ATS pre-tooled zipper fin profiles have no NRE (non-recurring engineering charge) to offer further savings for customers.

Zipper fins are stamped from thin sheet metal, typically aluminum or copper, and are formed into a shape. The sheets interlock with each other and the resulting fin assembly is then wave soldered/bonded to a metal base to form a heat sink. For example, a copper base can be used with aluminum fins to ensure thermal performance and effective heat spreading, but at a much lighter weight than a standard copper heat sink. ATS pre-tooled zipper fin heat sinks are the right choice because they were designed with high aspect ratio fin profiles, enabling taller, thinner and more densely packed fins for increased surface area and improved cooling performance.

In addition, zipper fin heat sinks can be customized with heat pipes and integral ducts to enhance thermal performance, particularly with active heat sinks for air movers, fans, and blowers. Heat pipes are a common addition to zipper fin heat sinks because the base acts as the evaporator section and the fins as the condenser section. This provides a lightweight, high-performance