What is difference between each inductor core materials? | Common Mode Power Line Choke Manufacturer | Coilmaster Electronics

What is difference between each inductor core materials? | Coilmaster Electronics specialize in the production of SMD power inductors, common mode choke, high frequency transformers.

What is difference between each inductor core materials?

Understanding the differences between various inductor core materials is crucial in selecting the right component for your application. At Coilmaster Electronics, we not only break down the unique properties and advantages of Ferrite, Ceramic, and Kool Mu® cores, but we also bring decades of expertise to the table.

Starting from our roots in producing Ferrite cores, we’ve evolved to become a leader in manufacturing power inductors, common mode chokes, transformer and other passive components. This deep understanding of raw materials, combined with our experience in custom solutions, allows us to provide products that are perfectly suited to meet the specific needs of engineers. We know what works best for your designs and are equipped to deliver components that enhance performance and reliability.

Below, we explore the unique characteristics of each core material and how they can benefit your applications.


Ferrite Core

Ferrite is a magnetic material which consists of a mixed oxide of iron and other elements that are made to have crystalline molecular structure. The crystalline structure is created by firing the ferrite material at a very high temperature for a specified amount of time and profile. The general composition of ferrites is xxFe2O4 where xx represents several metals. The most popular metal combinations are manganese and zinc (MnZn), and nickel and zinc (NiZn). These metals can be easily magnetized.

Ferrite material is ideal for reducing electromagnetic interference (EMI) in power supplies and transformers. Proven to lower system costs and enhance performance in high-frequency operations. The Ferrite from Coilmaster is compliant with EU environmental regulations and offers excellent energy efficiency, making them suitable for green energy applications.

Ceramic Cores

Ceramic is one of the common materials used for inductor cores. Its main purpose is to provide a form of the coil. In some designs, it also provides the structure to hold the terminals in place. Ceramic has a very low thermal coefficient of expansion. This allows for relatively high inductance stability over the operating temperature ranges. Ceramic has no magnetic properties. Thus, there is no increase in permeability due to the core material. Ceramic core inductors are often referred to as "air core" inductors. Ceramic core inductors are most often used in high-frequency applications where low inductance values, very low core losses, and high Q values are required.

Ceramic core product from Coilmaster Electronics preferred in RF and high-frequency circuits where precision and reliability are paramount, adhering to stringent quality standards.

Kool Mu® Core

Kool Mu® is a magnetic material that has an inherently distributed air gap. The distributed air gap allows the core to store higher levels of magnetic flux when compared to other magnetic materials, such as ferrites. This characteristic allows a higher DC current level to flow through the inductor before the inductor saturates. Kool Mu material is an alloy that is made up of nickel and iron powder (approx. 50% of each) and is available in several permeabilities. It has a higher permeability than powdered iron and lowers core losses. Kool Mu performs well in power switching applications. The relative cost is significantly higher than powdered iron.

Efficient and reliable for renewable energy systems and automotive applications, where performance under high DC bias is critical.

MPP Core

MPP is an acronym for molypermalloy powder. It is a magnetic material that has an inherently distributed air gap. The distributed air gap allows the core to store higher levels of magnetic flux when compared to other magnetic materials, such as ferrites. This characteristic allows a higher DC current level to flow through the inductor before the inductor saturates. The basic raw materials are nickel, iron, and molybdenum. MPP stores higher amounts of energy and has a higher permeability than Kool Mu. The core characteristics allow inductors to perform very well in switching power applications. Since higher energy can be stored by the core. The cost of MPP is significantly higher than Kool Mu, powdered irons, and most ferrite cores with similar sizes.</p>

Powdered Iron Core

Powdered iron is a magnetic material that has an inherently distributed air gap. The distributed air gap allows the core to store higher levels of magnetic flux when compared to other magnetic materials, such as ferrites. This characteristic allows a higher DC current level to flow through the inductor before the inductor saturates. Powdered iron cores are made of nearly 100% iron. The iron particles are insulated from each other, mixed with a binder (such as phenolic or epoxy) and pressed into the final core shape. Powdered iron cores are typically the lowest cost alternative and their permeabilities typically have a more stable temperature coefficient than ferrites.

Why Partner with Us?

At Coilmaster Electronics, we combine decades of expertise in material science with a deep commitment to quality and precision, ensuring that our inductors, transformers, and passive components meet your exact specifications. Our ability to provide tailored solutions, fast and flexible manufacturing, and a proven track record across various industries makes us the ideal partner for your engineering needs. Let us help you achieve your project goals—Request a Quote today and discover the difference we can make.

Core MaterialPermeabilityCostTemperature StabilityApplications
FerriteFerriteLowHighPower supplies, transformers, EMI reduction
CeramicLowMediumVery HighRF circuits, high-frequency applications
Kool Mu®HighHighMediumAutomotive, renewable energy, power supplies
MPPVery HighVery HighMediumSwitching power, energy storage
Powdered IronLowLowHighGeneral-purpose, outdoor electronics
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What is difference between each inductor core materials? | High Voltage Power Inductors Manufacturer | Coilmaster Electronics

Located in Taiwan since 1995, Coilmaster Electronics Co., Ltd. has been a manufacturer of magnetic components. Its main magnetic components include, common mode chokes, SMD molding power chokes, chock coil inductors, SMD shielded and semi-shielded power inductors, low profile and high current power inductors, high voltage power inductors, ethernet and LAN power transformers, flat wire inductors, RJ45 jacks with integrated magnetics and high frequency transformers, and ceramic or air coil multilayer chip inductors.

Coilmaster is a professional manufacturer for inductor, common mode choke, chip beads and transformer. Our vision is “Creating high-performance inductors, reducing energy loss, and contributing to sustainable” To achieve this, our engineer team is keen to design the power inductor to have better efficiency. With more than 20 years of experience in magnetic territory, Coilmaster Electronics is specialized in the production of SMD power inductors, common mode choke, high frequency transformers.

Coilmaster Electronics has been providing customers with high current power inductors since 1995, with both advanced technology and 29 years of experience, Coilmaster Electronics ensures that each customer's requirements are met.