Neodymium Magnets in Acoustics Module
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Neodymium Magnets in Acoustics Module

  • SHINE

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Product Introduction

Early smartphones used only a single magnet in their speakers. Today, as phones become thinner and thinner, users are demanding ever-higher standards of sound quality and stability. Thanks to their strong magnetic properties, neodymium magnets are perfectly suited to meet this trend. Modern smartphone speakers may use up to five magnets to ensure high-quality and stable sound. 


Since these magnets are embedded into components during manufacturing and exposed to high-temperature environments, engineers typically select high-temperature-resistant grades, such as N48H or N50H.


Magnet Attribute Parameter
Main Application Acoustics Module, Speaker
Place of Origin Ningbo, China
Brand SHINE
Shape Accept Customization
Processing Service Shaping, Sintering, Cutting, Plating
Coating Nickel
Color Silver/others
Tolerance +/-0.05
Grade N35-N52
Re: The data above is only for your reference. Please contact us for more details.
Application Area

Consumer-Electronic-Application2


Consumer electronics: Electronics are one of the traditional applications of high-performance neodymium magnets. Taking smartphones as an example, there are over 10 components using neodymium magnets,


For example, microphones, micro speakers/receivers, vibration motors, wireless chargers, Bluetooth headphones, phone camera focusing, sensors, and so on. With the progress of science and technology, more and more smartphone accessories are made of neodymium magnets.

Different Shapes of Neodymium Magnets

The following are some common shapes of neodymium magnets. If you need a special shape, please contact us to discuss customization!.


Different-Shapes-of-NdFeB-Magnets

Packaging & Shipping

Export Standard Cartons are supplied with foam well protected. We can make the packages according to customer's request.
Standard sea and air packages are available.

Packaging

Packaging

Shipping

Shipping

Properties Chart
HCj

HCj

Permanent-Magnets-Properties-Chart

Permanent Magnets Properties Chart


Shine Magnetics has achieved mass production of various grades of neodymium magnets, including N52, N52M, N52H, N48SH, N45UH, N40EH, and 33AH. We have a complete set of production equipment and are able to quickly customize magnets of various specifications according to customer requirements.


Among Shine’s neodymium magnet product line, the highest-grade products can withstand operating temperatures of up to 220°C.


Taking uncoated N45SH neodymium magnets as an example, after 168 hours of HAST accelerated aging testing (under conditions of 2 atm, 100% relative humidity, and 120°C), the weight loss per unit volume is less than 3 mg/cm³. The neodymium magnets we manufacture consistently demonstrate excellent corrosion resistance and a low temperature coefficient.


Physical Properties
Density 7.4 ~7.7 g /cm ³ Hardness 560 ~ 650 HV
Resistivity 120 ~ 160UΩ Young's Modulus 150~160 KN
Bending Strength 250~ 400 N / mm ³ Curie Temperature 320 ~ 395 ℃
Thermal Conductivity 7 ~ 10 W / MC Compressive Strength 1000 ~ 3000 N / mm ³
Situation Magnetization 30 ~ 40 MGOe Max Working Temperature 80 ~ 240 ℃
Br Temperature Coefficient 0.08 ~ 0.12% / ℃ iHC Temperature Coefficient 0.34 ~ 0.75% / ℃
Magnetic Properties Parameters

Neodymium-Magnet-Magnetic-Properties


Production Process Of Sintered Nd FeB Magnet


Production Process Of Sintered Nd FeB Magnet

Test Instruments

Shine Magnetics has focused on quality control since its founding. Necessary and strict checks and tests are taken in all production processes to make sure any products made by us are trouble free. To work with Shine Magnetics is to get the most reliable supplier of magnetic products. It goes without saying that our magnetic products comply with the highest quality standards. We are working continually to improve the quality and process of the products.


Neodymium Test Instruments


B-H Curver

B-H-Curver

Plating Testing

Plating-available-&-Tests

Aboving Tests Could be made as per customers’requirements:

HAST Test: Test Condition: 132.9℃, 95% humidity, 2.9 ATM, 7 days
Weight Loss: 3mg/cm2


Regular Coatings

Regular-Coatings

About Us

data

NINGBO SHINE MAGNETIC TECHNOLOGY CO., LTD
We are a creative magnetic solution supplier. We specializes in researching, developing and producing magnets and magnetic products used in different industrial and customers`applications. Relying on right knowledge and experience in the field, aiming at the potential demands from customers, integrating the intelligence of our know-how experts, We have produced well recognized magnetic products.

Certificate

Our product testing meets quality standards.

Certificate1000
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We are constantly trying to improve ourselves in new thoughts, new technology and new working methods.
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