Thickness down to 0.5mm, High-Grade N52 We supply extreme micro-slicing of Neodymium Thin Discs. Capable of achieving thicknesses as low as 0.50mm. As shown in the product photo, these magnets are quite thin. Handling them requires precision tweezers and a steady hand. These “Micro-Wafers” are suitable for low profile applications. Such as membrane switches, fiber optic isolators, and smart-card electronics. Their vertical Z-height is the ultimate constraint. These Sintered Neodymium retain high magnetic energy despite their microscopic volume. Why 0.5mm? At this scale, the magnet is a precision component, not just a fastener. 1. Z-Height Minimization: The Application: Smartphone camera modules, micro-speakers, and smart cards. The Logic: Modern electronics fight for every micron of space. A 0.5mm magnet allows you to add magnetic function (sensing or actuation). And not adding bulk to the device stack-up. 2. Hall Effect Sensing: The Application: Non-contact switching. The Benefit: A thin disc placed on a membrane button can trigger a Hall Effect sensor underneath. Not interfering with the tactile “click” feel of the button. 3. “Foil” vs. Sintered: The Distinction: Do not confuse these with flexible magnetic sheets (fridge magnets). These are Sintered Rare Earth. Even at 0.5mm, an N52 disc provides a sharp, powerful magnetic field that flexible rubber magnets cannot match. Manufacturing Advisory: Fragility & Physics A 0.2mm magnet is brittle like a potato chip made of glass. 1. The “Flex” Warning: The Risk: Sintered Neodymium has zero flexibility. If you try to bend this 0.5mm disc, it will snap instantly. Assembly: These magnets must be bonded to a Rigid Backing (Steel or Stiff Plastic) immediately. They cannot be used as structural bridges. 2. The Pc Value (Heat Sensitivity): The Physics: A very thin magnet (low aspect ratio) has a poor “Permeance Coefficient.” It is naturally fighting its own magnetic field. The Heat Risk: Because of this “magnetic stress,” thin wafers demagnetize easily at high temperatures. A standard N52 thin disc may fail at 60°C. Our Solution: For hot environments, we recommend upgrading to UH (Ultra High). Or EH grades to stabilize the flux. Handling & Packaging How we ship them matters as much as how we make them. 1. Vacuum Wafer Packing: The Method: We do not ship these in bulk bags (they would crush each other). We ship them in Vacuum-Sealed Trays or rigid slots, similar to semiconductor wafers. Separation: You cannot slide these apart by hand. You must use non-magnetic tweezers (ceramic/plastic) to peel them from the stack. 2. Static Control: The Advice: At 0.5mm / 1mm size, static electricity is often stronger than the magnet’s weight. Use anti-static tools to prevent the magnet from jumping or getting lost. Ideal Applications Micro-Optics: Faraday isolators in laser diodes. MEMS: Micro-Electro-Mechanical Systems actuation. Smart Wearables: Ultra-thin charging contacts. Tactile Domes: Magnetic triggers inside membrane keypads. Ordering Guide: Precision Specs To quote these accurately, please specify: 1). Dimensions: Diameter x Thickness (e.g., 2mm x 0.5mm). 2). Coating: – Parylene: (Best for thickness control and medical use). – Nickel: (Standard, but adds ~0.03mm to the thickness). 3). Flatness: “Is this a sensor target?” – We can sort for superior flatness. 4). Quantity: Batch production is required for micro-slicing.