The small permanent magnet is the very small size permanent magnet which is used for the compact equipment and precision components. The equipment and the component need limited space and reliable magnetic performance.
It is widely used in the medical equipment, micro sensor, consuming electronic product and other size controled and steady magnetic performance micro magnetic component area. Compared with the standard magnet, the small magnet have a higher standard in the material selection, precision machining and surface coating and magnetic performance. Along with the reduction of the size, the dificluty of the machining is bigger. It takes more advantage in keep the magnet in the steady magnetic performance. So the small permanent magnet is customized according to the appliance, space and performance of the magnet. It is not only depends on the size of the magnet.
The magnet could be made by multipule materials. We select the material by required magnetic output, working temperature, anti- corrosion and size limitation and target price. For many of the magnet projects, the NdFeB, SmCo, ferrite and AlNiCo are the main materials. Every materials has its own advantage. So you could choose the material by the application.
