Ni N48SH Strong Neodymium Sound Coil Magnet for Audio Tablets

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Ni N48SH Strong Neodymium Sound Coil Magnet for Audio Tablets   Technical Specifications:
Item:     MP-NDN48SH-09
Grade:  N48SH
Material: Neodymium (NdFeB)
Plating:    Nickel
Shape: Block, Rectangular, Rectangle, Square
Dimension: Customer Design Drawing
Tolerance: ±0.05 mm
Magnetisation Direction: Axial / Radial
Residual Magnetic Flux Density (Br): 1280-1320 mT (12.8-13.2 kGs)
Energy Density (BH)max: 318-342 KJ/m³ (40-43 MGOe)
Coercivity Force (Hcb): ≥ 915 kA/m ( ≥ 11.5 kOe)
Intrinsic Coercivity Force (Hcj): ≥ 955 kA/m ( ≥ 12 kOe)
Maximum Operation Temperature: 80 °C
Delivery Time: 14-35 days

3C consumer electronics mainly include six categories: mobile phones, tablets, laptops, watches, headphones, and wireless charging devices. Take Apple products as an example, iPhone, iPad, Mac, Watch, AirPods, MagsaFepParts.

There are three main modules in consumer electronics that use magnets, which are acoustic modules, motor modules and magnetic modules.

Neodymium Magnet in 3C Consumer Electronics Products
Acoustics modules, as the name suggests, are vocal units, and popular names are speakers. The performance of the speakers has a great impact on sound quality.

The magnetic field will be generated in the power -on wire. When the AC audio current is through the coil (ie, the audio coil) of the speaker, the corresponding magnetic field is generated in the audio. The force makes the sound rim vibrate in the permanent magnetic field of the speaker’s own, as the audio current is vibrated. The vibration film and sound of the speaker are connected. When the sound coil is vibrated with the horn film, the surrounding air vibrates, and the speaker will sound. As shown below, this is the principle of the speaker.

The requirements of the acoustic modules of different 3C products are different in the face of tin neodymium iron boron magnet

iPhone and other mobile phone products have high frequency and have certain requirements for mobile phones. Therefore On Mac or iPad, on the one hand, the sound quality needs to be considered. On the other hand, its volume is larger than the mobile phone, and there is more space available. Therefore Metropolitania Watch products such as Watch are small in size and users generally need their needs for sound and low requirements for sound quality. Therefore, magnetic steel with low performance (50h) is also small.

Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. They are also referred to as NdFeB magnets, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). They are a relatively new invention and have only recently become affordable for everyday use.  Neodymium Mobile Phone Speaker Magnets N54SH Nickel
N35, N38, N42, 45SH…what does it all mean? Neodymium magnets are all graded by the material they are made of. As a very general rule, the higher the grade (the number following the ‘N’), the stronger the magnet. The highest grade of neodymium magnet currently available is N52. Any letter following the grade refers to the temperature rating of the magnet. If there are no letters following the grade, then the magnet is standard temperature neodymium. The temperature ratings are standard (no designation) – M – H – SH – UH – EH – AH.  Horn Sound NdFeB Magnets Square N45SH Nickel