How to judge the quality of electronic heat sink?

Electronic heat sinks are mainly used in electronic components, and electronic heat sinks do not have an external power supply, and there are other materials such as copper electronic heat sinks or alloy materials, but many friends do not know how to judge the quality of electronic heat sinks. The following metal stamping manufacturers, heat sink manufacturers, will give you a brief introduction. Three methods to judge the quality of electronic heat sinks: 1. The surface roughness and flatness of the electronic heat sink contacting the mesa directly affects the contact thermal resistance and pressure drop. 2. The quality of the electronic heat sink material and manufacturing process (cracks, shrinkage holes, etc. produced by casting), inferior materials and rough and defective processes will directly affect the thermal conductivity of the radiator. 3. Disc springs for electronic radiators should ensure that the free height should be stable after being flattened for 24 hours, otherwise the springs may fail after a period of use, which will cause poor contact between the radiator and the die. The above is how to judge the quality of electronic heat sinks. We can judge according to the above methods when purchasing heat sinks. For more information on heat sinks, please pay attention to the official website of the metal stamping manufacturer.