Small rectangular neodymium magnets, often referred to as neodymium bar magnets, are compact and powerful magnets with a rectangular shape. These magnets are widely used in various applications due to their strong magnetic properties. 

Material Composition: Small rectangular neodymium magnets are made from a combination of neodymium, iron, and boron (NdFeB). This composition gives them their exceptional magnetic strength and makes them one of the strongest permanent magnets available.

Strong Magnetic Force: Despite their small size, neodymium magnets are known for their high magnetic force. They can generate a strong magnetic field, which makes them valuable in applications requiring a compact yet powerful magnet.

Rectangular Shape: These magnets typically have a rectangular shape, which allows them to be easily aligned and oriented in specific directions, making them suitable for various applications where a linear or rectangular magnetic field is needed.

Applications: Small rectangular neodymium magnets have a wide range of applications, including in electronics, craft projects, magnetic closures, sensor assemblies, and various industrial and consumer products.

Customizable Sizes: Manufacturers offer a range of sizes for small rectangular neodymium magnets, allowing for customization to fit specific requirements in different applications.

Magnetization Direction: Neodymium magnets have a preferred magnetization direction. The poles are typically located on the larger faces of the rectangle (top and bottom), which is important to consider in applications requiring precise magnetic alignment.

Coatings and Plating: To protect against corrosion and damage, these magnets are often coated or plated with materials like nickel, zinc, or epoxy. These coatings enhance the durability of the magnets.

Temperature Sensitivity: Neodymium magnets can lose some of their magnetic strength at high temperatures, which should be considered in applications that involve elevated temperatures.

Handling Precautions: Due to their strong magnetic properties, small rectangular neodymium magnets should be handled with care. They can attract and trap metal objects and may cause pinching or injury if not used cautiously.

Safety and Environmental Considerations: Neodymium magnets are not suitable for applications that require high-temperature stability or exposure to certain chemicals, as they can deteriorate under such conditions.