Product Name: Ferrite Core Soft Magnet Mn-Zn Core Ni-Zn Soft Ferrite Core for Transformer Grade: N35-N54( M, H, Sh, Uh, Eh, Ah ) Coating: Ni, Zn, Gold, Silver, Copper, Epoxy, etc. Shape: Custom-Make According to Customer Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet Size: Custom-Make Welcome Tolerance: +/-0.03mm to +/-0.15mm Certificate: SGS, RoHS, Reach,etc Quality System: TUV:IATF 16949,ISO9001:2000 Factory: Over 20 Years Experiences Trademark: XILAMA Transport Package: Antimagnetic Packaging / Neutral Packing Specification: Customized Origin: Jiangmen, China HS Code: 85051110 Product Description DescriptionMn-Zn ferrite core is consist of a combination of iron oxide and strontium carbonate. Thanks to their low cost, light weight, relatively high energy products and good anti-demagnetization , ferrite and ceramic magnets are widely used. The ferrite and ceramic magnets (Mn-Zn ferrite cores) have a maximum operating temperature of 480 ° F, which is ideal for some high temperature applications.