Flat permanent square magnet is made of sintered ferrite, the specific size is 20mm in length and width, 3m in thickness and the direction of magnetizing is thickness. This magnet is a high temperature resistance magnet, it can work at 250℃. If the product need the magnet can work at more than 250℃, you can choose samarium cobalt magnet, if you need the high performance but less than 230℃ working temperature, you can choose neodymium magnet.
Recommended for flat thin ferrite samples
1 9/16" Ultra Thin Sintered Ceramic Block Magnet 40x20x0.65mm
Thin small sintered ferrite block rectangular y30 3.8 x 2 x 0.8 mm