The 21 best ferrite core brands
uxcell, Murata and Amidon lead our ranking of 21 ferrite core brands. Compare what each brand makes, visit its official site, or shop it online.
Ferrite Core brands, ranked
TSCentral is reader-supported: we may earn a commission when you shop through links on this page. It does not affect the ranking.
-
1
uxcell
Budget clip-on ring ferrites for cable noise suppression, sold in multi-pack assortments of different bore sizes.
Website: uxcell.com |Brands like uxcell
Popularity 10.0/10
-
2
Murata
Large maker of ceramic capacitors and EMI filters, with ferrite beads for noise suppression in phones and cars.
Website: murata.com |Brands like Murata
Popularity 6.1/10
-
3
Amidon
Toroid specialist with material grades like 43 for power and RF inductors, sold in small quantities.
Top products: FT-140-43 Ferrite Toroid Core
Website: amidoncorp.com |Brands like Amidon
Popularity 5.3/10
-
4
Coilcraft
Power inductors, transformers and ferrite-core coils for RF and power designs, with a large surface-mount catalog.
Website: coilcraft.com |Brands like Coilcraft
Popularity 4.2/10
-
5
Steward
Soft magnetic ferrite cores and powders for transformers and inductors, mostly sold to OEM electronics designers.
Website: stewardmaterials.com |Brands like Steward
Popularity 4.1/10
-
6
Eaton
Electrical contractors, utilities and industrial buyers rely on Eaton for power management equipment. Its catalog centers on circuit breakers, wire and cable, and related electrical components that distribute and protect power in buildings and facilities.
Popularity 3.3/10
-
7
Sumida
Surface-mount power inductors and ferrite cores for DC-DC converters and automotive designs.
Website: products.sumida.com |Brands like Sumida
Popularity 2.7/10
-
8
Ferroxcube
Dedicated ferrite materials maker offering pot cores, E cores and toroids for power transformers.
Website: ferroxcube.com |Brands like Ferroxcube
Popularity 2.3/10
-
9
Bourns
Shielded power inductors and common mode chokes, mostly for automotive and industrial power designs.
Website: bourns.com |Brands like Bourns
Popularity 2.1/10
-
10
Panasonic
Mass-market electronics maker whose inductor and EMI noise filter lines include ferrite beads and chip inductors.
Popularity 2.0/10
-
11
Vishay
Broad passives maker with ferrite-core inductors and EMI suppression beads alongside resistors and capacitors.
Website: vishay.com |Brands like Vishay
Popularity 1.9/10
-
12
Philips
Credibility and reliability go connected at the hip with the most innovative health and well-being brand, Philips. There are presumably very few people who have yet not given a shot at this brand, for it has been the most promising...
Website: usa.philips.com |Brands like Philips
Popularity 1.8/10
-
13
Koa
Resistor and inductor specialist with ferrite-core power inductors for automotive and IoT designs.
Popularity 1.8/10
-
14
Delevan
Coil winding specialist offering ferrite-core inductors and suppressor chokes for aerospace and military use.
Website: delevan.com |Brands like Delevan
Popularity 1.7/10
-
15
Siemens
The 20th century saw a series of development and innovation. Infrastructural progress was also happening during this era. Every organization and industry depends on electricity and power to function, which is precisely what Siemens is known for. Siemens is a...
Website: new.siemens.com |Brands like Siemens
Popularity 1.7/10
-
16
Micrometals
Iron powder toroid cores rather than ferrite, used for power inductors and chokes in switching supplies.
Website: micrometals.com |Brands like Micrometals
Popularity 1.6/10
-
17
Chilisin
Taiwanese passive maker of wirewound and multilayer chip inductors plus EMI and RF filters.
Website: chilisin.com |Brands like Chilisin
Popularity 1.2/10
-
18
Hitachi
Japanese metals group whose soft ferrite cores in grades like ML91S were widely used in power supplies.
Website: hitachi.com |Brands like Hitachi
Popularity 1.0/10
-
19
Workman
Workman builds CB radio antennas and the mounts that attach them to vehicles, including mirror mounts and stud mounts. Stud and spring parts fit standard 3/8 inch threaded whips. Mirror mounts and stud mounts give buyers two ways to fix...
Website: workmanelectronics.com |Brands like Workman
Popularity 0.8/10
-
20
Elna
Elna makes electrolytic and super capacitors at its base in Japan, with a history that goes back more than 90 years. Its capacitors appear in digital cameras, car audio, AV equipment and communication devices. Elna also makes sewing machines and...
Popularity 0.8/10
-
21
Kemet
The components manufactured by Kemet are found all over the world. From outer space to inside our bodies, as well as in the products we use on a daily basis. They believe in manufacturing superior quality products that are also...
Website: content.kemet.com |Brands like Kemet
Popularity 0.7/10
Official websites and social accounts
| Brand | Website | X / Twitter | YouTube | ||
|---|---|---|---|---|---|
| uxcell | uxcell.com | – | – | – | – |
| Murata | murata.com | /MurataElectronics | – | – | MurataManufacturing |
| Amidon | amidoncorp.com | – | – | @AmidonInc | – |
| Coilcraft | coilcraft.com | /CoilcraftInc | coilcraft | @Coilcraft_Inc | UCF3WWLS9LQMPhZIrbzpsbXA |
| Steward | stewardmaterials.com | – | – | – | – |
| Sumida | products.sumida.com | /SumidaOfficial | – | @SumidaCorp | SUMIDACORPORATION |
| Ferroxcube | ferroxcube.com | – | – | – | – |
| Bourns | bourns.com | /Bourns | – | – | bournsvideos |
Ferrite Cores Buying Guide
Ferrite cores are important electronic components that are used in many different applications, from power supplies to transformers. Ferrite cores are made from a ferrite material that has high permeability, which means that it can concentrate the magnetic field of a coil. Ferrite cores are commonly used to increase the efficiency of transformers and other electronic devices.
What are Ferrite Cores?
A ferrite core is a small magnetic component that is used to increase the inductance of a coil. It is made from a type of ceramic material that contains iron oxide (Fe2O3) and other elements such as manganese, zinc, and nickel. Ferrite cores are typically used in electronic devices that require a high level of magnetic field concentration.
Uses of Ferrite Cores
There are many different uses for ferrite cores. Some of the most common include:
- Transformers
- Inductors
- Magnetic amplifiers
- Switched mode power supplies
- EMI filters
Choosing the Right Ferrite Core
Ferrite Core Shape
Ferrite cores come in many different shapes and sizes. The shape of the core can affect its performance in different ways. Some of the most common shapes include:
- Rod-shaped
- Toroidal
- Cylindrical
- U-shaped
- E-shaped
The shape of the ferrite core that you choose will depend on the specific application that you require it for. In general, a toroidal ferrite core is the most versatile and can be used in many different applications. The U-shaped and E-shaped cores are typically used in transformers and magnetic amplifiers.
Magnetic Permeability
The magnetic permeability of a ferrite core is an important factor to consider when selecting a core for your application. The magnetic permeability of a material describes how easily it can be magnetized. A material with high permeability can be magnetized easily and will produce a strong magnetic field.
For most applications, a ferrite core with a high magnetic permeability is desirable. However, in some cases, a lower permeability material may be required. For example, in EMI filters, a low permeability material may be used to reduce the magnetic interference.
Frequency Range
The frequency range of a ferrite core is another important factor to consider. Different cores will have different frequency ranges in which they perform optimally. If you are using a ferrite core in a high-frequency application, it is important to select a core that can operate in that frequency range.
Losses
Ferrite cores can experience energy losses due to hysteresis and eddy currents. Hysteresis losses occur when the magnetic domains in the material need to re-align, while eddy currents occur when a changing magnetic field induces currents in the ferrite material.
To minimize these losses, it is important to choose a ferrite core that has a low coercivity (the amount of magnetizing force required to demagnetize the material) and a low electrical conductivity. Additionally, the size and shape of the core can affect the losses, with larger cores generally experiencing lower losses.
Saturation Flux Density
The saturation flux density of a ferrite core describes how much magnetic flux the core can support before it becomes magnetically saturated. Magnet saturation occurs when the magnetic material is no longer able to increase its magnetic flux density in response to an applied magnetic field.
For most applications, it is desirable to choose a ferrite core with a high saturation flux density. This will allow the core to support a larger magnetic flux density and thus increase the efficiency of the device.
Conclusion
Ferrite cores are important components used in many different electronic devices. When choosing a ferrite core, it is important to consider factors such as the core shape, the magnetic permeability, the frequency range, the losses, and the saturation flux density.
By selecting the right ferrite core for your application, you can optimize the efficiency of your device and ensure that it operates reliably for years to come.
Application
The specific application for which you are using the ferrite core will have a significant impact on what type of core you will need. Some applications require a high magnetic flux density while others require lower losses. Before choosing a ferrite core, it is important to understand the requirements of your application and choose a core that is specifically designed to meet those needs.
Coefficient of Thermal Expansion
The coefficient of thermal expansion (CTE) is a measure of how much a material expands or contracts in response to changes in temperature. Since ferrite cores are often used in devices that generate heat, it is important to choose a ferrite core with a CTE that is compatible with the other materials in your device. Choosing a ferrite core with a CTE that is significantly different from the other materials in your device can lead to stresses and failures in the device over time.
Operating Temperature Range
The operating temperature range of your ferrite core is another important consideration. Many ferrite cores are designed to operate within a specific temperature range, and exceeding that range can lead to problems with signal loss, durability, and lifespan. If you are using a ferrite core in a high-temperature application, it is important to choose a core that is rated for those conditions.
Availability and Cost
Ferrite cores come in a wide range of sizes, shapes, and materials. Some ferrite cores may be more readily available than others, depending on your location and supplier. Additionally, the cost of different ferrite cores can vary significantly. When choosing a ferrite core, it is important to consider both availability and cost and find a balance that meets your needs without breaking your budget.
Types of Ferrite Cores
Soft Ferrite Cores
Soft ferrite cores are made from a variety of iron oxide materials and are designed for use in high-frequency applications. These cores have high magnetic permeability and low coercivity, making them ideal for applications that require high inductance and low power losses. Soft ferrite cores are commonly used in radio-frequency (RF) applications, such as security alarms and RFID systems.
Hard Ferrite Cores
Hard ferrite cores are made from a mixture of ferric oxide and barium or strontium carbonate. These cores are designed to resist changes in magnetization, making them ideal in applications where high-magnetic-field strength is required. Hard ferrite cores have low magnetic permeability and high coercivity, making them suitable for power supply applications, such as inverters and DC-to-DC converters.
Metal Ferrite Cores
Metal ferrite cores are typically made from a mixture of metal powders and ferrite materials, such as nickel zinc (NiZn) or manganese zinc (MnZn). These cores have a relatively high magnetic permeability and are designed for use in low-frequency applications. Metal ferrite cores are typically used in power supply applications, such as transformers and inductors, where low-temperature rise, high current-carrying capacity, and low losses are required.
Conclusion
Choosing the right ferrite core for your device is essential to ensuring that it operates reliably and efficiently. By carefully considering factors such as application, CTE, operating temperature range, availability, and cost, you can select a ferrite core that meets the specific needs of your device. Whether you require a soft ferrite core for RF applications or a metal ferrite core for power supply applications, there are many different types of ferrite cores available to suit your needs.
