MPL 25x15x2 / N38 - lamellar magnet
lamellar magnet
Catalog no 020392
GTIN: 5906301811893
length [±0,1 mm]
25 mm
Width [±0,1 mm]
15 mm
Height [±0,1 mm]
2 mm
Weight
5.63 g
Magnetization Direction
↑ axial
Load capacity
3.06 kg / 30.01 N
Magnetic Induction
120.03 mT
Coating
[NiCuNi] nickel
3.49 ZŁ with VAT / pcs + price for transport
2.84 ZŁ net + 23% VAT / pcs
bulk discounts:
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MPL 25x15x2 / N38 - lamellar magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Thanks to their mighty power, flat magnets are frequently used in products that need exceptional adhesion.
The standard temperature resistance of these magnets is 80°C, but with larger dimensions, this value can increase.
In addition, flat magnets commonly have special coatings applied to their surfaces, such as nickel, gold, or chrome, to improve their corrosion resistance.
The magnet with the designation MPL 25x15x2 / N38 and a magnetic strength 3.06 kg weighing just 5.63 grams, making it the ideal choice for projects needing a flat magnet.
Contact surface: Due to their flat shape, flat magnets ensure a larger contact surface with other components, which can be beneficial in applications requiring a stronger magnetic connection.
Technology applications: They are often used in many devices, such as sensors, stepper motors, or speakers, where the flat shape is necessary for their operation.
Mounting: Their flat shape makes it easier mounting, especially when it is required to attach the magnet to some surface.
Design flexibility: The flat shape of the magnets permits designers a lot of flexibility in arranging them in devices, which is more difficult with magnets of more complex shapes.
Stability: In some applications, the flat base of the flat magnet may provide better stability, minimizing the risk of sliding or rotating. However, one should remember that the optimal shape of the magnet depends on the specific application and requirements. In certain cases, other shapes, such as cylindrical or spherical, are a better choice.
Magnets have two main poles: north (N) and south (S), which interact with each other when they are oppositely oriented. Similar poles, such as two north poles, act repelling on each other.
Due to these properties, magnets are often used in electrical devices, e.g. motors, speakers, sensors, or magnetic locks. Neodymium magnets stand out with the highest power of attraction, making them indispensable for applications requiring strong magnetic fields. Moreover, the strength of a magnet depends on its size and the materials used.
It should be noted that extremely high temperatures, above the Curie point, cause a loss of magnetic properties in the magnet. The Curie temperature is specific to each type of magnet, meaning that under such conditions, the magnet stops being magnetic. Additionally, strong magnets can interfere with the operation of devices, such as compasses, magnetic stripe cards and even electronic devices sensitive to magnetic fields. Therefore, it is important to avoid placing magnets near such devices.
Advantages and disadvantages of neodymium magnets NdFeB.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They do not lose their even during around 10 years – the loss of power is only ~1% (according to tests),
- Their ability to resist magnetic interference from external fields is notable,
- By applying a shiny layer of nickel, the element gains a clean look,
- They exhibit extremely high levels of magnetic induction near the outer area of the magnet,
- Neodymium magnets are known for very high magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the shape),
- The ability for custom shaping and adaptation to custom needs – neodymium magnets can be manufactured in multiple variants of geometries, which amplifies their functionality across industries,
- Significant impact in advanced technical fields – they are utilized in hard drives, electric motors, clinical machines along with high-tech tools,
- Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications
Disadvantages of neodymium magnets:
- They may fracture when subjected to a strong impact. If the magnets are exposed to external force, it is advisable to use in a protective case. The steel housing, in the form of a holder, protects the magnet from cracks and additionally enhances its overall resistance,
- They lose magnetic force at high temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the form and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
- Magnets exposed to damp air can oxidize. Therefore, for outdoor applications, we advise waterproof types made of coated materials,
- Limited ability to create internal holes in the magnet – the use of a magnetic holder is recommended,
- Potential hazard linked to microscopic shards may arise, especially if swallowed, which is crucial in the family environments. It should also be noted that small elements from these devices can interfere with diagnostics once in the system,
- High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which may limit large-scale applications
Exercise Caution with Neodymium Magnets
Dust and powder from neodymium magnets are flammable.
Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.
Neodymium magnets are primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.
Neodymium magnets jump and touch each other mutually within a radius of several to almost 10 cm from each other.
Magnets are not toys, youngest should not play with them.
Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.
Neodymium magnetic are particularly delicate, resulting in damage.
Neodymium magnets are characterized by considerable fragility. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.
Neodymium magnets should not be near people with pacemakers.
Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.
Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their power can surprise you.
Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional damage to the magnets.
Neodymium magnets can become demagnetized at high temperatures.
Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.
Keep neodymium magnets away from TV, wallet, and computer HDD.
Strong magnetic fields emitted by neodymium magnets can destroy magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.
The magnet coating is made of nickel, so be cautious if you have an allergy.
Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.
Keep neodymium magnets as far away as possible from GPS and smartphones.
Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.
Warning!
So you are aware of why neodymium magnets are so dangerous, see the article titled How very dangerous are powerful neodymium magnets?.