Ferrite Core for Drive Transformer, EIF

Magnetic Powder Core, Ferrite Core, Magnetic Component

 EIF Core

Currently, we have more than 10 types of raw materials and are able to produce 900 specifications of Ferrite Core for drive transformers, leading to a wide application in many industries.

Characteristics
1. To ensure great quality and high cost effectiveness, our company imported Toshiba kilns, Tamagawa presses and state-of-the-art CNC grinding machines, as well as brought in advanced sintering techniques and forming techniques. That's why we achieve an annual production of 12,000 tons.
2. In order for quality assurance, we selected reliable raw material manufacturers. Main ferric oxide suppliers include Japan JFE, Korea RG and China Steel Corporation. Main manganous-manganic oxide manufacturers are Hunan Special Metal Materials Factory and Kingray New Materials Science & Technology Co., Ltd.
3. We pay great attention to the product quality and carry out strict tests from raw material to final products. High-precision testing instruments include Bruker X-ray fluorescence spectrometer, high-frequency power dissipation measuring instrument, S4 PIONEER X-ray fluorescence spectrophotometer, etc.

Application: Drive transformers, high-frequency transformers, power inductors, high-frequency choke coils

Technical Parameters

Table 1
Name Drawing No. Dimensions (mm)
A B C D E F I
EIF14 731 14.0±0.3 10.7 min 3.0±0.2 5.0±0.2 2.0±0.2 3.5±0.15 1.5±0.15
EIF18 732 18.0±0.4 13.6 min 4.0±0.2 10.0±0.25 2.0±0.2 4.0±0.2 2.0±0.15
EIF22 733 21.8±0.4 16.4 min 5.0±0.25 15.8±0.3 3.2±0.2 5.7±0.3 2.5±0.25
EIF32 742 31.75±0.65 25.4±0.5 6.35±0.2 20.35±0.4 3.2±0.2 6.35±0.2 3.2±0.2
EIF38 744 38.1±0.8 30.8±0.6 7.6±0.2 25.4±0.55 4.45±0.2 8.25±0.2 3.8±0.2
EIF43 743 43.2±0.9 35.4±0.7 8.1±0.2 27.9±0.6 5.4±0.2 9.5±0.2 4.1±0.2
EIF64 749 64±1.3 53.6±1.1 10.2±0.3 50.8±1.1 5.1±0.2 10.2±0.2 5.1±0.2
Table 2
Name Weight Parameters AL±25%(nH/N²)
(g) C1 Le(mm) Ae(mm²) Ve(mm³) Aw(mm²) Amin(mm²) JF40
EIF14 1.4 1.11 16.7 15 251 8.0 15.00 1800
EIF18 4.1 0.54 20.2 37.4 757 10.0 40.00 2900
EIF22 10.2 0.33 26.0 78.0 2028 18.9 79.00 5200
EIF32 24 0.27 35.1 130.0 4560 30.5 129.22 6300
EIF38 44 0.22 43.6 194.0 8440 51.6 185.44 8200
EIF43 60 0.22 50.4 229.0 11500 73.7 217.62 8500
EIF64 185 0.13 69.7 519.0 36200 110.7 518.16 15000