Ferrite Disc Magnet – 7mm x 3mm | Isotropic

The Ferrite Disc Magnet – 7mm x 3mm | Isotropic is a compact and economical ceramic permanent magnet designed for general-purpose magnetic holding, sensing, craft, manufacturing and educational applications. Measuring 7mm in diameter and 3mm thick, this small ferrite magnet is ideal for projects requiring a lightweight, corrosion-resistant magnetic component at an affordable price.

Manufactured from isotropic ferrite magnetic material, this disc magnet differs from anisotropic ferrite magnets because the material does not have a single preferred magnetisation direction during manufacture. This provides greater flexibility in how the magnet can be magnetised, although isotropic ferrite generally has lower magnetic strength than comparable anisotropic ferrite or neodymium magnets.

Ferrite magnets are naturally resistant to corrosion and typically do not require a protective coating, making them a durable choice for many everyday, commercial and industrial applications.

Key Features

• Compact ferrite disc magnet
• Dimensions: 7mm diameter x 3mm thickness
• Isotropic ferrite magnetic material
• Permanent ceramic magnet
• Economical magnetic solution
• Naturally resistant to corrosion
• No protective plating typically required
• Good resistance to demagnetisation
• Suitable for general-purpose magnetic applications
• Ideal for manufacturing, crafts, education and product development

Common Applications

• Craft and hobby projects
• Educational science activities
• Small magnetic closures
• Product manufacturing
• Magnetic sensors
• Displays and promotional products
• Toys and models where appropriately designed
• Small holding applications
• Prototype development
• Custom magnetic assemblies

What Is an Isotropic Ferrite Magnet?

An isotropic ferrite magnet is manufactured without aligning its magnetic particles in one specific direction during production. As a result, the finished magnetic material can be magnetised in different directions depending on the required application.

This differs from anisotropic ferrite magnets, which are manufactured with their magnetic particles aligned in a preferred direction to achieve greater magnetic performance in that orientation.

Isotropic ferrite magnets generally provide lower magnetic strength but greater magnetisation flexibility, making them a practical and cost-effective option for many low-to-moderate strength applications.

Why Choose a Ferrite Disc Magnet?

Ferrite magnets, also known as ceramic magnets, are widely used because they combine affordability, durability and reliable permanent magnetic performance.

Unlike unprotected neodymium magnets, ferrite material has excellent natural corrosion resistance and does not normally require nickel or other protective plating. This makes ferrite magnets useful in applications where moisture or environmental exposure may be a consideration.

The small 7mm x 3mm disc profile is particularly suitable for compact products, models, craft projects and manufactured components where only a small magnetic element is required.

Technical Specifications

• Product Type: Ferrite Disc Magnet
• Alternative Name: Ceramic Disc Magnet
• Material: Ferrite / Ceramic Magnetic Material
• Material Type: Isotropic
• Shape: Disc
• Diameter: 7mm
• Thickness: 3mm
• Magnet Type: Permanent Magnet
• Corrosion Resistance: Naturally corrosion resistant
• Typical Applications: Holding, sensing, manufacturing, crafts, education and product development

Ferrite vs Neodymium Magnets

Ferrite magnets provide significantly less magnetic strength for their size than neodymium rare earth magnets, but they offer several advantages for suitable applications.

Ferrite magnets are generally more economical, naturally corrosion resistant and capable of providing dependable magnetic performance without requiring protective metallic coatings. This makes them particularly useful for high-volume manufacturing and general-purpose applications where maximum magnetic strength is not necessary.

For applications where very high magnetic force is required within a small space, a neodymium magnet may be more appropriate.

Please Note

Ferrite magnets are hard and brittle ceramic components. They can chip, crack or break if dropped, struck or allowed to snap forcefully against another magnet or hard surface.

Actual magnetic holding performance depends on the mating material, steel thickness, contact area, surface condition, air gaps and direction of applied force. Paint, coatings and other gaps between the magnet and steel will reduce magnetic attraction.

Do not drill, cut or machine ferrite magnets unless appropriate specialist processes and equipment are used.

Small magnets should be kept away from young children. Keep magnetic products away from pacemakers, medical implants, magnetic storage media and sensitive electronic equipment where magnetic interference may be a concern.