Comparison Table of Common Iron Powder Core Material Color June 9,2021.

Iron powder core, namely magnetic material ferric oxide, is mainly used for high frequency inductor to solve electromagnetic compatibility (EMC) problems in electrical circuits.

Power toroidal core inductor

We supply various series iron powder cores, the material table as below:

MCT MATERIAL No.

Color

Practical Frequency/range

Initial Permeability

-2

Red/Gray

250KHz-10MHz

10

-6

Yellow/Gray

3MHz-40MHz

8.5

-8

Yellow/Red

20KHz-1MHz

35

-10

Black/Gray

15MHz-100MHz

6

-14

Black/Red

500KHz-15MHz

14

-15

Red/White

150KHz-3MHz

25

-17

Blue/Yellow

20MHz-200MHz

4

-18

Green/Red

10KHz-1MHz

55

-26

Yellow/White

1KHz-500KHz

75

-28

Gray/Green

50KHz-100KHz

22

-33

Gray/Yellow

20KHz-5MHz

33

-34

Gray/Blue

20KHz-5MHz

33

-35

Yellow/Gray

20KHz-5MHz

33

-38

Gray/Black

1KHz-500KHz

85

-40

Green/Yellow

1KHz-1MHz

60

-45

Black

1KHz-500KHz

100

-52

Green/Blue

1KHz-1MHz

75


Material Description

-2/14 Materials

The low permeability of these materials will result in lower operating AC flux density than with other materials with no additional gap-loss,The -14 material is similar to -2 material with slightly higher permeability.

-8 Material

This material has low core loss and good linearity under high bias conditions,a good high frequency material,while the highest price material.

-18 Material

This material has low core loss similar to the -8 material with higher Permeability and a lower cost, good DC saturation characteristics.

-26 Material

It is a cost effective general purpose material that is used in a wide variety of power conversion and line filter applications.

Supply Iron Powder Core

-33 Material

Low cost,and relatively low Permeability of this material make it popular in large sizes for high power UPS chokes.

-34/35 Material

An alternate to the -8 material, used for high frequency core and loss is not critical. Good linearity with high bias.

-38 Material

A higher permeability alternate to the -26 material. A low cost material best used at line frequency.

-40 Material

The least expensive material. It has characteristics quite similar to the very popular -26 material. Popular in large sizes.

-45 Material

The highest Permeability material.A high Permeability alternate to -52 material with slightly higher core loss.

-52 Material

This material has lower core at high frequency and the same Permeability as The -26 material.

It is very popular for high frequency choke inductor designs, we also accept custom made inductor and OEM service.

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