We supply the industry’s thinnest Sintered Neodymium Disc Magnets as per your requirements. And achieve thicknesses as low as 0.20mm. These “Micro-Discs” push the boundaries of magnetic manufacturing. They are suitable for next-generation micro-electronics, MEMS (Micro-Electro-Mechanical Systems), and precision acoustics, Standard magnets are usually cut with thick saw blades. The thin disc magnets are processed using precision multi-wire slicing. And double-sided papping. These techniques ensure perfect flatness and parallelism at microscopic scales. The “0.2mm” Challenge Thickness vs. Fragility: At 0.2mm, a sintered Neodymium magnet is extremely fragile—comparable to a ceramic wafer or glass slide. Manufacturing Limit: – Standard slicing stops at around 0.5mm. – To reach 0.2mm, we must slice slightly thicker and then Lap (Grind) the material down to the final dimension. Handling Warning: – These magnets have zero flexibility. – They cannot be snapped together or flexed. – We recommend handling them with Vacuum Suction Tools or non-magnetic plastic tweezers only. Coating Considerations: The “Thickness Budget” On a 0.2mm magnet, the coating thickness actually matters. Standard Plating vs. Precision Coating: Nickel (Ni-Cu-Ni): – A standard Nickel coating adds ~0.02mm to the total thickness (0.01mm per side). – On a 0.2mm magnet, that means 10% of your magnet is just plating. Parylene (Recommended): – For 0.2mm discs, we highly recommend Parylene C (Vapor Deposition). – It adds only 0.002mm – 0.005mm. – And preserves the magnetic volume and maintaining tighter dimensional tolerances. Benefit: – Superior waterproofing for medical/wearable devices. Packaging: The “Vacuum” Necessity You cannot ship 0.2mm magnets in a tube; they will crush each other. Protective Packing: We use vacuum-sealed bags for thin magnets. Separation: – The magnets are stacked tightly. – Prevent them from jumping together and shattering. Cleanliness: – Keeps the magnets free of dust and metallic debris, ready for clean-room assembly. Applications Micro-Speakers: Voice coil magnets for hearing aids and IEMs (In-Ear Monitors). Smartphones: Camera autofocus actuators and lens stabilizers. Sensors: Ultra-low profile Hall Effect triggers. Smart Labels: Flexible electronics and RFID tags. Ordering Guide: What We Need To quote these micro-parts, precise data is required: 1). Diameter: (e.g., 3mm). 2). Thickness: (e.g., 0.2mm, 0.25mm). 3). Tolerance: Do you need standard (±0.03mm) or Precision (±0.01mm)? 4). Coating: Nickel or Parylene? 5). Quantity: (Due to the high-tech processing, MOQs are typically 1,000 pcs).