Heat Sinks function and Technologies

Heat sinks are one of the most common forms of thermal management in technology, machinery, and even in natural systems. These components are so ubiquitous that they’re easy to overlook, even by those who are familiar with the technology. We’ll address the basic working principles involved in heat sinks, introduce active and passive heat sink configurations, and discuss how users implement heat sinks in their applications.

A heat sink is a component that increases the heat flow away from a hot device. It accomplishes this task by increasing the device’s working surface area and the amount of low-temperature fluid that moves across its enlarged surface area. Because of the device’s configuration, there are many heat sink aesthetics, design, and ultimate capabilities. No matter straight fin heat sink nor flared fin heat sink, they are valuable in applications.

Active Heat Sinks and Passive Heat Sinks

Heat sinks are most commonly utilized inactive, passive or hybrid configurations.

–Passive heat sinks rely on natural convection, meaning the buoyancy of hot air alone causes the airflow generated across the heat sink system. These systems are advantageous as they do not require secondary power or control systems to remove heat from the system. However, passive heat sinks are less effective at transferring heat from a system than active heat sinks.

– Active heat sinks utilize forced air to increase fluid flow across the hot area. Forced air is most commonly generated by a fan or blower, or even movement of the entire object―such as a motorcycle’s engine being cooled by the air passing along the heat sink fins designed into the engine. One example of a fan producing forced air across a heat sink is the fan in your personal computer turning on after your computer gets warm. The fan forces air across the heat sink, which allows more unheated air to move across the heat sink surface, thus increasing the total thermal gradient across the heat sink system and allowing more heat to exit the overall system.

– Hybrid heat sinks combine some aspects of passive and active heat sinks. These configurations are less common, and they often rely on control systems to cool the system based on temperature requirements. When the system operates at cooler levels, the forced air source is inactive, passively cooling the system. Once the source reaches higher temperatures, the active cooling mechanism engages to increase the cooling capacity of the heat sink system.

-Heat Sink Technologies:

As the production technology, heat sinks always make from below one of technologies or mulity.

Extruded Heat Sink

Die-Casting Heat Sink 

Forging Heat Sink 

Stacked Heat Sink 

Folder Heat Sink  

Skive Heat Sink 

Stamping Heat Sink  

Machining Heat Sink


As a thermal solution, heat sinks are used on Laptop, computers, for example,  Heat sinks paste for CPUs like MACBOOK heat sink, telecommunication facilities, Industrial equipment and parts, led Lighting heat sinks & Home Appliance Industry, Auto parts, 5g base station and server and so on.