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zipper fin heat sink

Zipper Fin Heat Sink

Heatell is the best manufacturer and supplier of zipper fin heat sink in China with over 8 years of experience. We are capable of producing all kinds of zipper fin heat sink to fully support your business.

CNC machining, stamping, extruding, riveting, punching, bonded fin, skiving, cold forging, die casting, and other technologies are all realized in Heatell to ensure the quality of our zipper fin heat sink.

Contact us now! Let Heatell help your own business grow!

Your Top Zipper Fin Heat Sink Manufacturer and Provider in China

Heatell manufactures the highest quality zipper fin heat sink thanks to our advanced production line imported from Taiwan.  We stocked hundreds of numerous zipper fin heat sink to 100% support your business.

zipper fin heat sink

Do your applications require higher volume and higher performance? Then Heatell zipper fin heat sink is the right solution you need.

zipper fin heat sink

When it comes to a high-quality zipper fin heat sink, Heatell is in the right place. There are many production processes of zipper fin heat sink in Heatell.

It includes CNC machining, stamping, extruding, riveting, punching, bonded fin, skiving, cold forging, dies casting, and many more.

Item TypeZipper fin Heat Sink
ShapesBased on your requirements.
ApplicationInverter / Inverter / Power / IGBT / Rectifier / LED Lighting / Welding Machine / Communication Equipment / Electronics Industry /
Solid State Relay / Controller / Electromagnetic Heating
ColorBased on your requirements.
FinishAnodizing, Mill finish, Electroplating, Polishing, Sand blasted, Powder coating, Silver plating, Brushed, Painted, PVDF etc.
Lengthcustomized length
Deep processCNC,drilling,milling,cutting,stamping,welding,bending,assembling,Custom Aluminum Fabrication
Packagingstandard export packaging or as discussed
Service1. Free sample, Free design;
2. OEM/ODM available;
3. Custom-made request;
4. New design solution suggestion
Delivery time15-20 days after sample confirmed & down payment, or negotiated
PortShanghai Port
Our Advantagesuperior quality with competitive price, Certified enterprises in China

Heatell welcomes both old and new clients to negotiate business!

heat sink effect

-Standard Packing Option-

* Express Delivery*
* Ocean Delivery*

-Loading & Shipment-

Heatell: Your Leading Zipper Fin Heat Sink Supplier and Manufacturer

When searching for a high-density structure, Heatell zipper fin heat sink is a good replacement for both the skived and extrusion heat sink. Compared to skived fin, Heatell zipper fin heat sink is a fin and base stack assembly, which bonded or soldered together.

zipper fin heat sink advantage

Heatell zipper fin heat sink is made up of aluminum, copper, and Inconel. They are available in nickel-plated finish or chromate finish depending upon the material used. You can find different zipper styles of zipper fin heat sink. It’s either open styles, closed styles, or mixed styles.

heat sink profile testing

Our zipper fin heat sinks are highly appreciated by most clients for their lighter weight and high level of design flexibility. It allows our engineer team to design cohesive solutions with ducting, heat pipes, and blowers or fans to meet your specific application requirements.

Heat Sink manufacturer

With the benefits of lighter weight and higher performance, you may use Heatell zipper fin heat sink for cool LEDs and hot components in datacomms, telecoms, embedded, and military applications. Our zipper fin heat sink will provide environmental protection and thermal performance.

Additionally, Heatell zipper fin heat sink can be made in a high ambiance ratio in fin profiles. It enables thinner, taller, and more tightly packed fins, guaranteed higher cooling performance.

Heatell, the leading manufacturer working in China, provides hundred of zipper fin heat sink that is customizable upon your demands.  Our zipper fin heat sink meets SGS certification and compliance with European Rohs standards.

Whether you’re an importing company or heat sink trading, Heatell will fully support your local business. All interested shoppers throughout the country are free to bulk orders with us.

Contact us now! Let Heatell help your own business grow!

Zipper Fin Heat Sink: The Ultimate Guide

This guide will make the process of choosing zipper fin heat sink simple and straight forward.

It covers all information you need about zipper fin heat sink such as design, working principle, uses and surfaces finishing, among others.

So, keep reading to learn more about zipper fin heat sinks.

1.  What Is Zipper Fin Heat Sink?

This refers to a sheet of metal punched out of stock material gradually.

The design construction of this heat sink variant utilizes a special geometry, which interlocks itself and makes continuous connections.

In essence, it allows it easier to handle a single zippered entire component rather than maneuvering a swarm of individual pieces.

zipper fin heat sink

zipper fin heat sink

This type of heat sink offers high-efficiency cooling in forced convection systems.

Besides, the construction allows production of high fin densities while maintaining the lightweight.

You can use zipper fin heat sink in a wide range of applications across different industries to attain best device cooling capacities possible.

2.  Characteristics Of Zipper Fin Heat Sink

An ordinary zipper fin heat sink comes with various features depending on the specific application it is designed for.

However, the main feature you will find across different zipper fin heat sinks include the following;

  • Pre-tooled to reduce production time
  • Incredible aspect fin ratio designs to enable densely packed fin count
  • Easy to customize using heat pipes, copper plates and vapor chambers for enhanced heat transfer
  • Improved thermal transfer
  • Extended service lifespan due to corrosion-resistant surface coatings
  • Zero interface or joints between base and fins
  • Reduced tooling cost for non-standards
  • Optimum heat dispersion within forced convection with high airflow
  • Open-top design making it suitable for fan sink application

3.  Values Of Zipper Fin Heat Sink

Some notable benefits of zipper fin heat sink include the following;

a) High fin density, which facilitates effective heat dissipation and increases overall performance in different applications

b) Ultimate airflow because it features a straightforward processing method allowing exceptional forced solution to air flow.

c) You can easily customize zipper fin heat sink, which is vital since it makes it easy to attain one that suits your demands.

d) It is affordable to produce since they are available in pre-tooled designs, which significantly reduce general production cost.

e) Available in different sizes making it easy for you to select from a wide range of profiles.

f) Zipper fin heat sink provides ideal conductivity since it is constructed from a single metal profile. As such, it improves heat dissipation capabilities, and thermal conductivity can easily get to 100%

g) It can satisfy a higher production rate making it easy to attain the desired volume within shortest time possible.

4.  Suitable Sizes Of Zipper Fin Heat Sink

There is no limit to the specific size of zipper fin heat sink you may need.

In essence, it means that you can find any size of this type of heat sink depending on your application demands.

Of course, this is imperative since it widens your choice options and ensures you obtain the right size for your device.

However, zipper fin heat sink is available in standard sizes, which are quite common and easy to obtain from different manufacturers.

zipper fin heat sink

zipper fin heat sink

But you can also find it in custom sizes, which is dependent on your specific application needs.

5.  Recommended Colors For Zipper Fin Heat Sink

Zipper fin heat sink is available in a myriad of color finishes.

The specific color choice, in many instances, is dependent on your preference, especially as far as the general aesthetics is concerned.

Also, a different application may determine the ideal color finish for the particular zipper fin heat sink.

But the most commonly used colors on this type of heat sink include the following;

  • Silver
  • Black
  • Wood color
  • Blue
  • RAL powder coating
  • White
  • Diamond
  • Gold

Technically, it is easy to customize the color of this component using a specific paint choice.

Hence, it allows you to use any preferable color as long as it falls among the acceptable industrial requirements.

6.  Recommended Thickness For Zipper Fin Heat Sink

Ordinarily, there is no specific restriction to a specific thickness for zipper fin heat sink.

However, it is commended to use as thin fins as possible.

It helps in facilitating efficiency and performance as well as heat dissipation abilities.

Some applications require relatively thick fins, whereas others need reasonably thin fins.

However, the ideal recommended thickness should range between 0.4mm and 2mm.

But in many instances, you can always go for custom fin sizes.

Intrinsically, it implies you can get thinner or reasonably thick fins based on your application needs.

zipper fin heat sink

zipper fin heat sink

Above and beyond, the fin manufacturing material determines the ideal thickness since some are only effective with a particular thickness size.

7.  Surface Coating Options For Zipper Fin Heat Sink

Most zipper fin heat sinks used in various applications are versatile; hence different surface finishing applications can be applied to them.

However, the best surface coating option for this type of heat sink largely depends on the particular material used for constructing it.

In other instances, the specific application is also a major determinant of the suitable surface coating option.

Even so, the best surface finishing options you can consider for zipper fin heat sinks include the following;


This surface coating technique involves use of electrochemical process to convert material surface into a corrosion-resistant, aesthetic and durable anodic oxide finish.

Majorly, it suits a several application demands for aluminum zipper fin heat sink.

But you can also use it on other non-ferrous materials like magnesium.

Mill Finish

It is the typical raw surface texture of metal material after exiting the specific manufacturing process like extrusion.

This surface coating is rough and doesn’t have lustre.

Then again, it easily oxidizes with light white powder particularly when exposed to moisture.

Thus, it is an ideal surface finish for zipper fin heat sinks used in relatively friendly conditions.


It is attained through using an electrical signal offered by external power source to minimize cations of desired metal in solution and produce a metallic coating.

The process primarily involves metal ions moving through a solution from a positive to a negative one.

It is corrosion resistant hence durable and ideal for zipper fin heat sinks used in highly demanding applications.

Powder Coating

This type of surface finishing is often applied on zipper fin heat sink as free-flowing dry powder.

Essentially, it involves applying dry powder electrostatically and curing it under heat with UV light.

Dry powder varies and can be thermoplastic or a thermoset polymer.

It also forms a harder finish, usually stronger than conventional paint.


This technique for material surface finishing involves coating materials using silver, normally known as electrolysis.

This surface finishing guarantees excellent corrosion resistance to the material and the device in general.


This is generally a surface preparation technique that involves forcibly propelling steam of abrasive compounds against surface under high pressure.

The essence is to smoothen the possibly rough material surface.


Painting is a relatively conventional surface coating method that inhibits the metal from corrosion, rust and reactive compounds.

Ordinarily, you can use several painting compounds on the surface material to attain desired results.


This surface finishing process merely creates a smooth and shiny finish by rubbing or applying chemical treatment.

8.  Ideal Aluminum Alloy For Manufacturing Zipper Fin Heat Sink

Remarkably, aluminum is the most common material used for making different types of zipper fin heat sinks for various applications.

It possesses a wide range of valuable properties, making it ideal for providing efficiency and general excellent performance.

But you can always find aluminum in different alloys, all with different properties.

Hence, it is worthwhile to select and use the suitable alloys depending on the specific application of the particular zipper fin heat sink you are creating.

Ordinarily, the 6000 series is regarded as the most suitable aluminum alloy for zipper heat sinks.

The 6000 series aluminum alloys exhibit an excellent thermal conductivity value of 166 to 201 (W/m•K), considered best for such heat sinks.

aluminum zipper heat fin sink

aluminum zipper fin heat sink

Besides, these series contain aluminum alloys with high versatility; hence they make zipper fin heat sinks for various applications.

Moreover, these alloys are affordable, thus cutting costs when purchasing for different uses.

You may also consider aluminum 1050 alloy for manufacturing zipper fin heat sinks.

However, it is mostly suitable for making zipper fin heat sinks for particular applications, given that it is mechanically soft.

9.  Key Uses Of Zipper Fin Heat Sink

Zipper fin heat sinks are used in a broad range of applications revolving around mechanical and electronic industries.

The notable applications of this component are as follows;


Approximately, 60% -70% of the energy used by LED is converted into heat rather than light.

Hence, it makes it ideal that LED junction temperate and surrounding components operate within recommended limits to maximize durability and minimize running costs.

This heat sink and other cooling methods ensure the LED lighting obtains the suitable cooling solutions.


The demand for communication networks increases yearly.

But high power densities in relatively small chassis sizes make thermal design requirements quite challenging.

Thus, zipper fin heat sinks come in handy, especially for stand-alone and rack-mounted systems using passive and active components sealed in waterproof chassis.

Remarkable products where the use of heat sink is notable include telecoms industry include; switches, amplifiers, networking etc.

Consumer Electronics

Thermal demands on various consumer electronics increase all the time.

Smaller package sizes and significant power output complicate heat dissipation.

Hence, zipper fin heat sinks are used in such electronics to optimize thermal designs at the start of product’s lifecycle.

Television sets, washing machines, set-top boxes and solid-state drives are among consumer electronics using this type of heat sink.

Audio Systems

Zipper fin heat sinks is used in different audio products to provide the ideal thermal solutions.

Active speakers and amplifiers need advanced cooling solutions to provide optimum heat dissipation without compromising efficiency.


Most devices used in medical field need to be lightweight and portable but still guarantee the intended purpose and efficiency.

Furthermore, it is suggested to operate such apparatus within the manufacturer defined thermal tolerances, particularly when critical to patient care.

Zipper fin heat sinks in medical instruments maintain desired temperature, reduce weight for portability and add safety levels.

Transport Industry

For improved efficiency in a wide range of transport networks, increased power output and density need detailed design work and enhanced cooling solutions.

Power converters, charging stations, and status and monitoring devices are among the common places where this heat sink is largely used in transport industry.


Several parts used in aerospace industry are exposed to harsh conditions such as extreme temperatures and immense vibration.

Thus, zipper fin heat sinks designed for such applications ensure the devices used in aerospace can withstand such conditions while maintaining longevity.


Different equipment used in military sector operates over a wide range of temperatures with high vibration levels.

Power dissipation in such applications is required hence the need for using zipper fin heat sinks to guarantee efficiency.

10.  Fabrication Techniques For Zipper Fin Heat Sink

These are methods used in manufacturing or customizing zipper heat sinks.

You can use different fabrication methods depending on the actual design and the ultimate desired product.

Some fabrication techniques used in a wide range of zipper fin heat sinks include the following;


It is a process that involves placing a metal sheet in a blank or coil form into a stamping press.

The tool and die surface make the metal take a specific shape.


This operation uses a rotary cutter to eliminate excess or unwanted material from metal sheets.

It is a core fabrication technique, especially when it comes to designing the fins for this component.


This operation involves reducing the size of zipper fin heat sink to specific dimensions based on your ideal requirements.

Many options are available for cutting this component, but the most prominent ones include laser cutting and CNC cutting.


This fabrication process joins materials using high heat to melt parts and allow them to cool before fusing.


It is the process of joining different parts of the zipper fin heat sinks into one form a single functional unit.

You can use different methods to assemble this heat sink depending on the material and application demands.


This fabrication technique offers high precision when making a wide range of zipper fin heat sinks.

You get design freedom with forging because it has a thermally enhanced material flow.


It is an essential fabrication technique for making zipper fin heat sinks with complex geometries.

But you need to consider it when using material with a relatively low thermal conductivity than those used in forging.

11.  Working Principle Of Zipper Fin Heat Sink

The construction design of zipper fin heat sink enables it to eliminate heat from a wide range of electronic devices and appliances.

Its working principle is quite straightforward and entails the following aspects;

Generation Of Heat From The Source

Any electric and electronic device generates heat when operating; hence requires a technique to eliminate it.

Thus, the device, in this case, is the source of heat that the heat sink needs to regulate or reduce.

Heat Transfer

Here, heat generated from the device moves to the zipper fin heat sink.

Mainly, the actual heat rate transfer is determined by the thermal conductivity of this heat sink.

Heat Dissemination

Heat travels to the zipper fin heat sink, be it actively or passively.

This normally happens when heat moves down temperature difference from high to low heat settings.

Heat Dissolution

In zipper fin heat sink, heat dissipation process is determined by temperature gradient.

Fluid moves across the heat sink as it applies thermal diffusion and convection to reduce heat.

Also, this heat sink and the environment create temperature difference that must exist to facilitate heat dissipation.

12.  Essential Design Outlines For Zipper Fin Heat Sink

When designing zipper fin heat sinks, some fundamental guidelines to have in mind include the following;

  • For optimum performance and efficiency ensure you use copper or aluminum alloys
  • Maximum gap of spacing should be 8mm or 0.31 inches
  • The ideal fin height should be less than 50mm or 2 inches
  • When using aluminum alloys, the recommended thickness should be 0.4mm due to heat conductivity capabilities.
  • Suitable thickness for copper alloys should be 0.1mm-0.6mm
  • Maximum fin length should be 50mm

13.  How To Choose The Best Zipper Fin Heat Sink For Your Application

Selecting a zipper fin heat sink is imperative because it allows you to find the most suitable fit for your application.

Hence, it is advisable to always look into finer details to ensure you make the right choice.

The notable ones include the following;

Fin efficiency – Fins are designed to transfer heat from device to the environment.  Always select one depending on your applications demands.

Material – Aluminum is a commonly used material since it has high thermal conductivity, is lightweight, non-corrosive and durable.

Thermal modeling – A suitable computer software should come in handy when finding the right thermal modeling.

Spreading resistance – This feature exhibits how heat moves from source and how it causes temperature gradient between heat source and edges.

14.  Main Categories Of Zipper Fin Heat Sink

Fundamentally, zipper fin heat sinks are classified into two categories, which include active and passive.

Design of active zipper heat sinks features a mechanical compound intended to facilitate the complete cooing process.

Fans and blowers in active zipper fin heat sink offer efficiency in the general cooling process.

But it is somewhat more expensive than a passive zipper fin heat sink.

Passive zipper fin heat sink does not have a mechanical element for its cooling process.

Therefore, it cools the device through a convention process.

In essence, heat dissipates into air as the air moves across the zipper fin heat sink.

Intrinsically, it is seemingly more reliable because it does not feature any moving element.

Nevertheless, active and passive zipper fin heat sinks offer high performance in the respective application.

Main dissimilarity is that the former is more expensive than the latter, thus preferred in applications where cost is not necessarily a concern.

15.  Aspects Affecting Cooling Capacity Of Zipper Fin Heat Sink

The important elements that determine cooling capacity of this include the following;


The technique you use for attaching this heat sink is also a considerable element to look into when choosing one.

Others are mounted using specific methods that can only make them efficient in certain applications hence worth realizing.

Surface Finish

Different applications require zipper fin heat sinks with different surface coatings.

Hence, it is ideal to ensure you go for a component with a surface finish that meets the application demands.

Thermal Interface

Determining the particular heat interface specifications is fundamental.

You can easily figure out the best thermal interface features to know the suitable zipper fin heat sink.

Fin Design

The fin design is a fundamental element of efficiency of any heat sink.

For instance, a fin with a relatively large surface area offers relatively increased performance.

16.  How To Attach Zipper Fin Heat Sinks

Essentially, attachment technique refers to how you mount the zipper fin heat sink to different devices.

Basic methods for mounting these heat sinks to respective devices include using the following;

  • Using Clips
  • Using Thermal epoxy
  • Using Threaded stand-offs
  • Using Push pins
  • Using Thermal conductive tapes

Of course, the particular method you use for attaching zipper fin heat sink should guarantee efficiency and reliability in the application.

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