Neodymium Disc Strong Magnet – 2.6X3.5mm

Neodymium Disc Strong Magnet (2.6×3.5mm) delivers powerful magnetic strength in an incredibly compact form factor. These small yet mighty permanent magnets, primarily composed of Neodymium, Iron, and Boron (NdFeB), are part of the strongest class of commercially available magnets. Despite their tiny size—just 2.6mm in diameter and 3.5mm in thickness—they generate a surprisingly high holding force, making them invaluable in applications where space is severely limited but strong, reliable adhesion is critical. Engineers, crafters, and product designers rely on these miniature discs for precision applications across various industries, from consumer electronics to miniature motors and medical devices.

Key Features:

• Exceptional Strength: These magnets offer the highest practical magnetic energy product, providing a superior holding force compared to ceramic or ferrite magnets of the same size.
• Miniature Disc Form: The small, cylindrical shape (2.6mm D x 3.5mm H) allows for discrete integration into tight spaces and complex mechanical assemblies.
• Nickel-Copper-Nickel Plating: A durable triple-layer coating protects the magnet from corrosion and wear, significantly extending its service life.
• High Coercivity: The material maintains its magnetism even when exposed to strong external demagnetizing fields.
• Polarization: Magnetized axially through the thickness, concentrating the magnetic field at the flat circular faces.

Technical Specifications:

• Material: Neodymium-Iron-Boron (NdFeB)
• Plating: Ni-Cu-Ni (Nickel-Copper-Nickel) triple layer
• Magnetization: Axially (through the 3.5mm thickness)
• Max Operating Temperature: Typically $80^\circ C$ ($176^\circ F$)
• Residual Induction ($B_r$): Typically $1.43 \text{ Tesla}$ ($14,300 \text{ Gauss}$)

Mechanical Specifications:

• Shape: Disc/Cylinder
• Tolerance: 0.05mm
• Surface Finish: Smooth, shiny, and non-porous due to plating.

Dimensions:

• Diameter (D): 2.6 mm
• Thickness/Height (H): 3.5 mm

Pinout and Wiring:

• Note: As a permanent magnet, this component does not require any power or wiring.
• Polarity: One flat face represents the North pole, and the opposite flat face represents the South pole.
• Handling Note: Handle with care; these small magnets are brittle and may chip or break if they snap together forcefully or hit a hard surface.

Datasheet Reference:

• Download Neodymium Material Reference Chart

Commonly Used in:

• Precision Engineering: Essential for miniature clamping, positioning, and fastening.
• Small Motor Assembly: Utilize these magnets to create the rotor or stator in compact motors and generators.
• Model Making: Provides strong, hidden closure mechanisms for scale models and prototypes.

Applications:

• Consumer Electronics: Securing covers, providing haptic feedback, or activating reed switches in compact devices.
• Magnetic Sensors: Serving as the source field in Hall Effect sensor applications for position sensing.
• Jewelry and Closures: Creating invisible and secure magnetic clasps for high-end accessories.
• Scientific Experiments: Used in physics and materials science demonstrations and research.

Equivalent Models:

• 2mm x 2mm Disc (N52): Offers a smaller profile with slightly less holding force.
• 2.6mm x 1.5mm Disc (N52): Maintains the same diameter but a shorter height, optimizing for very thin assemblies.
• 3mm x 3mm Disc (N48): A larger size with a slightly lower grade, suitable when extreme N52 strength isn’t strictly necessary.

Package Includes:

• 1 x Neodymium Disc Strong Magnet – 2.6×3.5mm