Zipper Fin Heatsinks

Zipper fin heatsinks are designed for applications that require high thermal performance in a compact footprint. Their interlocking fin structure allows for greater fin density, helping improve heat dissipation while maintaining strong mechanical stability. This makes them a practical choice for electronics, power modules, telecommunications equipment, and other systems with limited space and demanding cooling needs. Heatscape can customize zipper fin heatsinks based on thermal requirements, airflow conditions, material selection, and mounting needs to support reliable product performance.

Beyond their compact design, zipper fin heatsinks deliver exceptional heat transfer efficiency, making them ideal for high‑power or temperature‑sensitive components. Their lightweight aluminum construction supports easy integration into assemblies such as cold plates or hybrid cooling systems, ensuring consistent performance across diverse industrial environments.

High-Density Zipper Fin Heatsink

Simple Zipper Fin Design with Copper Slug

PCIe Zipper Fin Heatsink

Active Fan Cooling Heatsink

All-Copper Zipper-Fin Heatsink

Multiple Stacks of Zipper Fins

Simple Aluminum Zipper Fin Heatsink

High-Density Zipper Fin Heatsink

Once tooling is in place, zipper fins can be fabricated with either aluminum or copper fins, creating a versatile solution that can be upgraded very quickly to higher performance if needed.

Simple Zipper Fin Design with Copper Slug

Simple zipper fin design with copper slug can be a cost effective and robust way to cool low powered applications.

PCIe Zipper Fin Heatsink

Low-cost, scalable zipper fin heatsink mounted onto PCIe card.

Active Fan Cooling Heatsink

Complete solution provided by Heatscape, which includes zipper fin heatsink, fan, simple optical module heatsinks, and shroud.

All-Copper Zipper-Fin Heatsink

All-copper zipper-fin heatsink with customer mating surface and captive hardware integrated. Once hard-tooling is in place, copper and aluminum fins can be switched with ease.

Multiple Stacks of Zipper Fins

Multiple stacks of zipper fins are utilized on the same vapor chamber, to allow for fully customized and scalable implementation of the unique fin design.

Simple Aluminum Zipper Fin Heatsink

Simple aluminum zipper fin heatsink, good for low-to-mid power applications.

High-Density Zipper Fin Heatsink

Simple Zipper Fin Design with Copper Slug

PCIe Zipper Fin Heatsink

Active Fan Cooling Heatsink

All-Copper Zipper-Fin Heatsink

Multiple Stacks of Zipper Fins

Simple Aluminum Zipper Fin Heatsink

Frequently Asked Questions

What is a zipper fin heatsink?

A zipper fin heatsink is a thermal solution made from thin metal fins that are stamped and interlocked, then attached to a base. This creates a high-density fin array that maximizes surface area for efficient heat dissipation. It is commonly used in systems that rely on strong airflow to remove heat from high-power components.

Why use a zipper fin heatsink instead of extruded or skived heatsinks?

Zipper fin heatsinks are used when higher fin density and improved airflow performance are required beyond what extrusion or skiving can achieve. They allow thinner and taller fins, increasing surface area significantly. This results in better cooling efficiency, especially in high-power applications with forced air cooling.

How are zipper fin heatsinks manufactured?

Zipper fin heatsinks are manufactured by stamping thin sheets of metal and interlocking them into a fin stack. The fin structure is then bonded to a base using methods such as soldering or brazing. This process allows for flexible fin geometry, material combinations, and scalable production for various applications.

What are the advantages of zipper fin heatsinks?

Zipper fin heatsinks offer high surface area, lightweight construction, and excellent airflow performance. They also allow for material combinations like copper bases with aluminum fins, optimizing both thermal efficiency and cost. These advantages make them ideal for advanced cooling solutions in high-performance systems.

Are zipper fin heatsinks suitable for high-volume production?

Yes, zipper fin heatsinks are well-suited for high-volume production once tooling is established. The stamping and assembly process is highly scalable and cost-efficient for large production runs. This makes them a practical choice for applications requiring consistent quality at scale.

Can zipper fin heatsinks be combined with other cooling technologies?

Yes, zipper fin heatsinks can be integrated with heatpipes, vapor chambers, or active cooling systems to enhance thermal performance. These hybrid solutions improve heat transfer and airflow efficiency. They are commonly used in high-power and high-density applications where advanced cooling is required.

What applications are best suited for zipper fin heatsinks?

Zipper fin heatsinks are widely used in servers, telecommunications equipment, power electronics, and high-performance computing systems. These applications require efficient air cooling within compact and dense environments. Their design supports reliable thermal performance under continuous and heavy workloads.

What is a heatsink calculator?

A heatsink calculator helps estimate thermal performance by analyzing heat dissipation, airflow, and material properties to determine optimal cooling solutions.

Zipper Fin Heatsinks