Posted on 8th April 2021 in the categories: Magnetics

Neodymium Magnets in Your Smartphone

neo magnets in smartphone

As established in one of our previous blogs, magnets won’t ruin your smartphone. Instead, they significantly increase their useability and performance.

An invisible, yet vital part of every smartphone is Neodymium (NdFeB) magnets. These small internal magnets are typically used in the:

  • Speaker
  • Receiver
  • Vibration mode motor
  • Taptic feedback motor
  • Camera auto-focus mechanism

Neodymium speaker magnets

Initially, smartphone speaker magnets were single magnet designs. However, smartphones have gotten thinner, whilst consumers demand higher-quality sound and reliability. Therefore, in order to keep up with consumer demands smartphone speakers now consist of up to 5 magnets to provide high quality, consistent sound.

Since these magnets are glued into an assembly which is subject to high temperatures during the manufacturing process, engineers select magnetic grads that can withstand such environments. Often, N48 and N52 are the magnetic grades of choice as they can withstand high temperatures during the manufacturing process and are also the strongest available grades for performance.

Receiver magnets

The receiver refers to the phone’s microphone. Similar to the speaker phones, receivers were initially made with a single magnet, but they are now typically a two-magnet design. Likewise, the two-magnet design is simply a result of smartphones thinner design.

The use of neodymium magnets in the receiver enables a greater dynamic range to be achieved, which delivers high-fidelity reproduction of sound.

Vibration motors

The vibration motor refers to the silent ring motor for when you set your phone to vibrate.  Vibration motors simply use one magnet.

Earbuds, earphones, and headsets

In the last few years, earphones have become more sophisticated and ultimately better. This is a result of NdFeB magnets. Each set of earphones and/or earbuds contains up to 4 magnets. Neodymium magnets have enabled earphones to become smaller in size while significantly improving sound quality.

Goudsmit UK

High performance magnets from Goudsmit UK are used daily in hundreds of industrial applications worldwide. Should you have a special requirement, our team of design engineers will be happy to create a custom solution.

Additionally, a variety of complementary services from design and consultancy to logistics and warehousing can help you grow your business. Shipping approximately 10 million magnets per annum, you can count on Goudsmit UK to meet your scheduling requirements.

For more information visit our magnetic products webpage or you can also download our products and services brochure here.

Contact us today for more information at info@goudsmit.co.uk. Or you can also speak to a member of our team on +44 (0) 2890 271 001.

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