Ferrite Core for High-Frequency Transformer, EI

Ferromagnetic Core, Nanocrystalline Magnetic Parts, Ferrites and Accessories

 EI 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
Name Drawing No. Dimensions (mm) Weight Parameters (mm) AL±25% (nN/H2 )
A B C D E F I (g) C1(mm-1) Le(mm) Ae(mm2 ) Ve(mm3 ) AW(mm3 ) AMIN(mm2 ) JF40
EI12.5 802 12.5±0.3 9.1min 2.4±0.2 5.0±0.2 5.1±0.2 7.4±0.25 1.5±0.2 1.8 1.38 21.2 15.3 325 17.9 12 1200
EI15.7 1267 15.7±0.25 8.5±0.2 2.5±0.15 11.0±0.2 0.65±0.15 2.2±0.1 1.55±0.1 2.8 0.35 12.7 36.1 457.9 2 27.5
EI16B 1023 16.0±0.3 11.8min 4.0±0.2 4.8±0.2 10.4±0.3 12.4±0.3 2.0±0.2 3.3 1.85 35.1 19 668.8 42.1 18.75 1200
EI19 852 19.0±0.3 14.0±0.3 5.1-0.5 5.1-0.5 11.3±0.3 13.55±0.3 2.35±0.2 4.6 1.1 31.1 28.5 884 41.8 19.2 1700
EI19A 1051 19.0±0.3 14.5+0.6 -0.3 4.45±0.25 5.2-0.4 11+0.6 -0.1 13.3+0.6 -0.1 2.3±0.2 4.5 1.76 39.8 22.6 898.1 55.3 23.14 1200
EI20 714 20.0±0.3 14.3min 4.55±0.2 5.0±0.25 11.15±0.2 13.5±5.25 2.3±0.2 4.8 1.68 39.2 23.3 914 50.3 23.46 1200
EI22 712 22.0±0.6 15.75min 5.75±0.3 5.75±0.3 11.4±0.3 15.4±0.3 4.0±0.3 9 1.19 44.1 37 1632 60.4 32.49 1800
EI25 715 25.4±0.6 18min 6.8±0.3 6.7±0.3 13.25±0.25 17.25±0.25 3.5±0.2 10 1.22 48.6 39.7 1930 77.9 45.56 1800
EI25B 822 25.3±.4 19min 6.5±0.3 6.75±0.25 12.35±0.25 15.55±0.25 2.7±0.2 9.8 1.15 46.9 40.8 1912 80 39.15 1800
EI28 716 28.0±0.6 18.6min 7.25±0.25 10.7±0.3 13.0±0.3 17.5±0.3 3.5±0.2 22 0.59 49.5 84.4 4170 77.7 77.58 2800
EI29 935 29.0±0.5 20.3min 7.35±0.25 10.7±0.25 12.6±0.3 17.1±0.3 3.5±0.2 22.1 0.6 50.7 82.7 4194.2 81.6 78.65 1250
EI30 717 30.0±0.6 19.5min 10.7±0.3 10.7±0.3 16.25±0.25 21.25±0.25 5.5±0.3 33 0.54 58.8 109 6440 75.3 107 3700
EI33A 728 33.0±0.6 24.2min 9.7±.3 12.7±0.3 19.4+0.4 -0.3 24.3±0.3 5.0±0.3 46 0.57 67.1 118 7640 146.5 104.14 3700
EI33B 728A 33.0±0.6 23.5min 9.7±0.3 12.7±0.3 19.25±0.25 24.05±0.25 5.0±0.3 41 0.57 67.1 118 7640 138.2 113.03 4400
EI40 718 40.0±0.7 26.8min 11.65±0.35 11.65±0.35 21.35±0.35 27±0.35 6.5±0.3 59 0.53 77.4 147 11390 168 135.72 3700