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TDK Electronics Europe
Nd-Fe-B Type Plastic Bonded Magnets CM

Nd-Fe-B Type Plastic Bonded Magnets CM

Product catalog summary

Overview: The document provides technical specifications and characteristics of Nd-Fe-B bonded magnets, specifically the CM series, which are compress molded types. These magnets are compliant with the RoHS Directive, ensuring they do not contain hazardous substances like lead, cadmium, mercury, hexavalent chromium, and certain bromine-based flame retardants.

Specifications: The CM series includes various materials such as CM8B, CM8BL, CM8BLH, CM11SH, and CM11UH, each with distinct magnetic properties. The document details the residual flux density, coercive force, intrinsic coercive force, and maximum energy product for each material.

Material Characteristics:

CM8B (Standard Material): Offers a balance of performance and cost.
CM8BL and CM8BLH (Low-cost Materials): Designed for cost reduction, suitable for applications like CD-ROMs and DVDs.
CM11SH and CM11UH (High-performance Materials): Provide superior magnetic characteristics, ideal for applications requiring high performance such as vibrating motors and spindle motors.

Technological Features: The document highlights proprietary technologies that enhance product strength by 20% over competitors, support for molding thin products, and surface treatment technologies that improve reliability.

Magnetic Characteristics: Detailed demagnetization curves and magnetic characteristics are provided for each material, illustrating their performance under various conditions.

Compliance: All materials conform to the RoHS Directive, ensuring environmental safety by avoiding the use of specific hazardous substances.

Catalog excerpts

Nd-Fe-B Type Plastic Bonded Magnets CM-1

Nd-Fe-B Bonded Magnets(Compress Molded Type) CM series Issue date: • All specifications are subject to change without notice. • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.

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Nd-Fe-B Type Plastic Bonded Magnets CM-2

Low-cost Materials Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.

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Nd-Fe-B Type Plastic Bonded Magnets CM-3

Nd-Fe-B Bonded Magnets(Compress Molded Type) CM Series This isotropic bonded magnet is made by compounding and compress-molding Nd-Fe-B magnetic material (MQ-P was used) with an epoxy binder. FEATURES • Material mixing and kneading technologies Product strength has been improved through proprietary technologies(20% improvement over competitors’ products). • Molding technologies Thin products can be molded and we support high-volume production for products as thin as 0.3mm(outer diameter of approximate 3 to 6mm). • Surface treatment technologies We apply a priming treatment prior to the application...

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Nd-Fe-B Type Plastic Bonded Magnets CM-4

DEMAGNETIZATION CURVES/MAGNETIC CHARACTERISTICS DEMAGNETIZATION CURVE • All specifications are subject to change without notice.

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Nd-Fe-B Type Plastic Bonded Magnets CM-5

LOW-COST MATERIAL, CM8BL DEMAGNETIZATION CURVE MAGNETIC CHARACTERISTICS [mT] (kG) [kA/m] (kOe) [kA/m] (kOe) [kJ/m3] (MGOe) Saturation ratio(%) Residual flux density Br Coercive force HCB Intrinsic coercive force HCJ Maximum energy product (BH)max • All specifications are subject to change without notice. 001-01 / 20080319 / e352.fm

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Nd-Fe-B Type Plastic Bonded Magnets CM-6

LOW-COST MATERIAL, CM8BLH DEMAGNETIZATION CURVE MAGNETIC CHARACTERISTICS [mT] (kG) [kA/m] (kOe) [kA/m] (kOe) [kJ/m3] (MGOe) Saturation ratio(%) Residual flux density Br Coercive force HCB Intrinsic coercive force HCJ Maximum energy product (BH)max • All specifications are subject to change without notice. 001-01 / 20080319 / e352.fm

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Nd-Fe-B Type Plastic Bonded Magnets CM-7

HIGH-PEFORMANCE MATERIAL, CM11SH DEMAGNETIZATION CURVE MAGNETIC CHARACTERISTICS [mT] (kG) [kA/m] (kOe) [kA/m] (kOe) [kJ/m3] (MGOe) Saturation ratio(%) Residual flux density Br Coercive force HCB Intrinsic coercive force HCJ Maximum energy product (BH)max • All specifications are subject to change without notice. 001-01 / 20080319 / e352.fm

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Nd-Fe-B Type Plastic Bonded Magnets CM-8

HIGH-PEFORMANCE MATERIAL, CM11UH DEMAGNETIZATION CURVE Residual flux density Br Coercive force HCB Intrinsic coercive force HCJ Maximum energy product (BH)max Saturation ratio(%) MAGNETIZATION CHARACTERISTICS MAGNETIC CHARACTERISTICS • All specifications are subject to change without notice. 001-01 / 20080319 / e352.fm

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