Ferrite Core for Power Inductor, EFD

E-Shaped Cores, E-Shaped Magnetic Core Elements, Inductor Ferrite Core

 EFD Core

Main Features
1. Currently, we have more than 10 types of raw materials, enabling us to produce more than 900 types of Ferrite Core, with complete types, wide application and reliable quality.
2. This type of soft ferrite core is made from high-temperature low-consumption material and high magnetic permeability material, showing a relatively low power loss at high temperature. We can also customize smaller-size products to suit different application fields.
3. 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 can achieve an annual production of 12,000 tons.
4. 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.
5. 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.

Packaging
Before leaving the factory, all magnetic products must be well packed to avoid any possible breakage or damage. Additionally, the packaging manner can also be decided by customers.

Application
The ferrite core is widely applied in electronic inverter, drive transformer, high-frequency transformer, power inductor, LED driver transformer.

Technical Parameters
Name Drawing No. Dimensions (mm) Weight Parameters AL±25% (nN/H2 )
A B C D1 D2 E F (g) C1 Le (mm) Ae (mm2) Ve (mm3 ) Aw (mm2) Amin (mm2) JF4 0 JF95
EFD5.5 819 5.65+0.1 -0.05 4.3min 1.6±0.05 1.4±0.05 2.65±0.1 2.6±0.1 3.2 0.3 5.6 15.1 2.7 40.9 7.3 7.3 360
EFD12 844 12.7±0.2 8.9±0.2 4.5±0.15 3.5±0.1 5.4±0.15 8.2±0.15 10.6±0.15 4.4 2.42 43.3 17.9 777 36.1 36.1 850
EFD13 864 13.2±0.3 9.8min 6.65±0.15 1.8+0 -0.3 3.75±0.1 3.9+0.25 -0 5.95±0.1 1.6 2.23 25.4 11.4 289 13.5 13.5 800
EFD15 727 15.0±0.4 10.8min 5.3±0.15 2.3±0.1 4.6±0.15 5.5±0.2 7.5±0.2 2.8 2.27 34.0 15.0 510 32.5 32.5 850
EFD15A 897 15.0±0.4 10.8min 5.4±0.15 2.45±0.1 4.6±0.2 5.4±0.15 7.5±0.2 2.9 2.24 34.0 15.2 516 31.3 31.3 850
EFD16.9 952 16.9±0.25 11.55min 5.8±0.15 2.7±0.1 4.45±0.1 16.5+0.25 -0.1 19.45+0.25 -0.15 8 4.2 78.0 18.7 1460 99 99 680
EFD1614 1623 16.45±0.3 12.7min 6.0±0.2 2.5±0.2 4.8±0.2 5.3±0.2 7.4±0.2 3.2 2.04 35.3 17.3 608.4 1300
EFD16. 5 818 16.55±0.25 11.4min 5.8±0.1 2.8±0.1 4.45±0.1 16.45+0.2 -0.15 19.4±0.15 7 1.52 47.0 31.0 1460 96.2 96.2 1200
EFD17.5 1617 17.35±0.35 11.6min 6.1±0.1 3.75±0.1 5.0±0.2 5.2±0.1 7.5±0.2 4.3 1.42 34.6 24.3 840 1200
EFD17.7 855 17.7±0.30 13.1min 7.5±015 3.3±0.1 5.6±0.15 8.60±0.2 10.90±0.2 6.2 2.14 54.8 25.6 1370 50.3 50.3 1050
EFD17.8 926 17.8±0.3 13.7min 6.8±0.15 2.9±0.1 4.8±0.15 7.5±0.2 10.0±0.2 4.5 2.3 45.4 19.9 904 54 54 800
EFD1715 1645 17.0±0.3 13.0±0.3 6.0+0.15 -0.2 3.3±0.25 5.6±0.2 5.5±0.2 8.05±0.15 4.55 1.568978 35.3 22.5 794.3 1800
EFD20 729 20.0±0.55 14.9min 8.9±0.2 3.6±0.2 6.65±0.15 7.7±0.25 10.0±0.25 7.8 1.52 47.0 31.0 1460 50.4 50.4 1200
EFD20A 1600 20.0±0.55 15.2min 8.8±0.2 3.6±0.2 5.4±0.15 7.8±0.25 10.1±0.25 7.5 1.8 45.5 26.0 1211 54.2 54.2
EFD20.2 933 20.2±0.3 15.9min 6.4±01 2.2±0.1 4.0±0.3 9.2±0.3 10.9+0.3 4.5 3.1 51.0 16.5 842 90.2 90.2 1300
EFD20.9 740 20.9+0.3 -0.2 15.9min 7.8±0.2 3.0±0.1 4.8±0.15 5.6±0.2 8.1+0.30 4.9 1.6 37.9 23.3 881 47 47 1200
EFD2025 1627 20.5±0.4 15.5min 10.0±0.2 2.0±0.2 4.0±0.2 9.5±0.15 12.5±0.15 2.63 51.5 19.6 1009.8 800
EFD20B 777 20.0±0.55 14.9min 8.9±0.2 3.6±0.2 5.7±0.2 9.3±0.15 11.5±0.15 7.3 1.98 51.2 25.8 1323 60.9 60.9 1100
EFD21 843 21.2±0.4 15.8min 9.4±0.2 3.3±0.1 5.9±0.15 9.2±0.2 11.8±0.2 8.5 1.77 53.4 30.1 1610 62.6 62.6 1200
EFD2328 1605 22.5±0.5 16.6min 11.0±0.25 1.9±0.2 4.0±0.2 11.1±0.2 13.9±0.2 16.3 2.69 58.4 21.7 1269.8 20.9 20.9 800
EFD23A 1615 23.6±0.4 17.6min 11.0±0.25 1.9±0.2 4.0±0.2 11.5±0.2 14.30±0.2 17 2.78 61.0 21.9 1335.6 20.9 20.9 720
EFD25 763 25.0±0.4 18.7min 11.2±0.2 5.2±0.2 9.1±0.2 9.3±0.2 12.5±0.2 17 0.98 57.0 58.0 3300 73.5 73.5 2000
EFD25A 829 25.0±0.65 18.7±0.6 11.4±0.2 5.2±0.2 9.1±0.2 9.3±0.25 12.5±0.25 17 0.98 57.0 58.0 3300 73.9 73.9 2000
EFD25B 986 25.6±0.65 19.4±0.6 11.4±0.2 5.2±0.15 9.2±0.2 9.5±0.25 12.7±0.15 17 1 55.8 58.3 3249.7 76 76 2000
EFD25C 1026 25.0±0.4 19.2min 9.5-0.2 +0.15 6.5±0.15 11.5±0.25 13.4±0.15 16.8±0.25 25 1 76.5 73.6 5152 135.3 135.3 2100
EFD26 1027 26.3±0.5 20.0min 11.3±0.2 5.15±0.15 9.1±0.2 9.3±0.25 12.5±0.15 17 1.1 59.5 56.1 3336 87.4 87.4 2000
EFD26 1027A 26.3±0.5 20min(20.5) 11.3±0.2 5.15±0.15 9.1±0.2 10.8±0.2 13.8±0.2 17 1.1 59.5 56.1 3336 87.4 87.4 2000
EFD26A 1643 26.3±0.5 20min(20.5) 11.3±0.2 5.15±0.15 9.1±0.2 9.3+0.25 -0 12.5±0.15 17 1.1 59.5 56.1 3336 87.4 87.4 2000
EFD27.5 889 27.5±0.5 20.7min 11.5±0.2 4.3±0.2 8.0±0.2 9.0±0.25 12.5±0.2 15.8 1.2 62.8 52.3 4584 87.3 87.3 1700
EFD28.3 1047 28.3±0.3 21.1min 7.5±0.2 10.5±0.2 16.5±0.25 13.15±0.3 17.2±0.3 38.8 0.8 77.6 97.3 7556 182.8 182.8
EFD30 854 30.6±0.6 24.1min 14.6±0.25 4.90±0.15 9.0±0.2 11.4±0.2 15.2±0.3 22.3 1.02 70.6 69.1 4878 115.1 115.1 2300
EFD31A 719 31.5±0.5 23.5min 14.6±0.25 4.90±0.15 9.0±0.2 11.4±0.2 15.2±0.3 24 0.97 68.0 69.8 4746 107.2 107.2 2300
EFD31B 867 31.0±0.5 21.2min 14.0±0.3 3.9±0.3 6.5±0.3 13.5±0.25 18.0±0.25 25.3 1.41 81.2 57.6 4672 104 104 1400
EFD31C 922 31.4±0.6 24.6min 14.6±0.25 4.90±0.2 9.0±0.2 11.4±0.2 15.2±0.3 23.5 0.98 68.0 69.2 4760 120.8 55.8 2300
EFD31D 1639 31.0±0.5 22.7±0.5 13.2±0.25 3.9±0.15 6.5±0.15 13.5±0.15 18.2±0.15 25.3 1.41 81.2 57.6 4672 104 104 1400
EFD33 1607 33.0±0.5 23.0min 15.25±0.25 2.95±0.15 5.2±0.25 15.5±0.2 20.3±0.2 22 1.8 87.6 47.7 4177.4 127.9 44.99 1500
EFD33.5 1046 33.5±0.4 23.0min 15.3±0.2 3.8±0.2 6.1±0.2 19.2±0.2 25.0±0.2 31.6 1.7 104.0 61.3 6375.7 155.5 58.14 1650
EFD3336 1631 33.0±0.5 24.0±0.4 15.0±0.25 4.0±0.15 6.5±0.2 13.65±0.15 18.15±0.2 24.2 1.28 75.7 59.1 4472.9 1600
EFD3434 1630 33.7±0.5 23.7±0.45 17.0±0.2 3.9±0.1 6.7±0.15 11.0±0.2 16.0±0.2 24.8 0.96 64.1 66.7 4277 2800
EFD3446 1616 33.7±0.5 23.7±0.45 17.0±0.2 3.0±0.1 5.0±0.15 18.0±0.15 23.0±0.15 25.3 1.82 91.8 50.4 4631.5 1300
EFD34L 1622 34.8±0.5 24.2min 17.0±0.2 3.5±0.2 5.4±0.3 16.8±0.3 22.3±0.3 1.55 88.6 57.2 5068.7 1800
EFD3543 1628 35.5±0.7 25.2min 16.5±0.3 4.0±0.15 6.6±0.2 16.5±0.2 21.5±0.2 32.5 1.34 88.3 66.0 5828.5 447
EFD3543 1628-1 35.5±0.7 25.2min(25.7) 16.5+0.15 -0.2 (16.45) 3.9+0.1 6.5+0.1 -0.2 16.6±0.2 21.6±0.2 32.5 1.34 88.3 66.0 5828.5 447
EFD3550 1635 35.0±0.5 24.7+0.7 -0.3 15.35±0.25 3.75±0.15 5.7±0.15 20.0±0.2 25.3±0.2 32.5 1.797051 103.6 57.7 5973 1200
EFD36 1608 36±0.8 25.8min 13.9±0.3 4.95±0.2 9.85±0.3 4.95±0.2 9.85±0.3 24 0.6 50.1 84.3 4218.7 62.9 68.81 3700
EFD37.8 876 37.8±0.5 22.4±0.45 13.8±0.2 4.0±0.15 5.0±0.2 21.6±0.2 29.0±0.2 42.2 1.61 111.2 68.8 7651 185.8 55.2 1300
EFD38 1602 37.3±0.5 29.6±0.4 18.8±0.25 3.5±0.2 7.7±0.2 10.9±0.2 15.4±0.2 23 1.1 72.9 64.1 4674 117.7 59.29
EFD3838 1633 38.5±0.5 27.5±0.4 18.0±0.25 5±0.15 8.0±0.2 13.75±0.15 19.25±0.2 40 0.89 79.1 88.8 7071.8 2400
EFD40 833 40.5±0.5 30.6min 16.6±0.2 6.6±0.1 10.6±0.2 16.3±0.2 22.5±0.2 58 1.02 108.8 106.5 10951 236.4 99.64 2300
EFD4050 1606 40.2±0.6 29.3±0.6 20.0±0.3 3.0±0.15 6.1±015 18.0±0.2 24.7±0.2 33.6 1.6 103.6 65.7 6808 167.4 60
EFD40A 1015 40.0±0.6 29.5min 20.0±0.2 4.0±0.1 8.0±0.2 17.0±0.2 22.0±0.3 28.3 1.2 98.7 80.0 7898 171.7 79.2 1900
EFD4133H 1620 41.5±0.6 28.5±0.5 21.1±0.3 4.5±0.15 7.3±0.2 10.05±0.2 16.55±0.2 35.8 0.68 64.4 94.9 6116.2 4200
EFD4142 1618 40.9±0.5 32.7min 21.0±0.2 3.5±0.2 7.7±0.2 15.0±0.2 21.0±0.2 37.3 1.23 84.8 68.9 5841.9 1600
EFD42 949 42.0±0.6 32.0min 17.6+0.25 -0.3 7.8±0.25 14.8±0.3 15.25±0.2 21.35±0.2 74.5 0.7 99.4 137.0 13618 228.8 137.28 2500
EFD42.9 1609 42.9±0.7 27.8min 21.6±0.3 4.4±0.2 6.6±0.2 18.9±0.2 26.3±0.2 54 1.1 108.5 95.5 10362.2 130.4 95.04 2100
EFD42.9A 1609-1 42.9±0.7 27.8min 21.6±0.3 4.3±0.2 6.5±0.2 18.9±0.2 26.3±0.2 54 1.14 108.5 95.5 10362.2 2400
EFD42.9B 1637 42.9±0.6 28.8mim(29.3) 21.6±0.25 4.4±0.15 6.5±0.3 18.7±0.2 26.1±0.2 54 1.091461 100.6 92.2 9271.3 2100
EFD43.7 1031 43.7±0.7 29.5min 20.3±0.3 4.0±0.15 6.1±0.15 21.5±0.15 28.5±0.15 50.5 1.5 120.4 82.4 9918 212.9 81.2 1600
EFD4352 1612 43.5±0.6 29.4±0.6 21.6±0.3 4.4±0.2 7.65±0.25 18.5±0.25 26.0±0.25 50.5 1.04 107.6 103.0 11087 2000
EFD4353 1024 43.5±0.5 29.0±0.5 21.6±0.25 4.4±0.15 6.7±0.15 18.7±0.2 26.5±0.2 55.8 1.2 108.8 94.4 10285 138.4 95.04 2000
EFD44 883 44.0±0.6 30.9min 20.0±0.3 6.6±0.2 10.0±0.2 15.8±0.2 22.3±0.3 65.5 0.76 98.9 129.6 12815 181.7 125 3000
EFD4445 1011 44.5±0.5 34.0min 22.0±0.3 3.0±0.1 8.5±0.2 17.5±0.2 22.5±0.2 43.3 1.7 113.0 66.0 7787 218.8 66 1600
EFD4450 1010 44.5±0.5 34.0min 21.5±0.3 3.0±0.1 6.0±0.2 18.0±0.2 25.0±0.2 38.4 1.6 107.6 65.7 7071 234 60 1500
EFD44A 914 44.0±0.6 30.9min 20.0±0.3 5.6±0.15 9.0±0.2 13.7±0.2 20.2±0.3 56 0.83 93.8 113.7 10665 157.6 112 2500
EFD45 1629 45.5±0.6 33.5±0.5 24.0±0.3 4.3±0.2 7.8±0.2 18.4±0.2 24.8±0.2 55 1.03 99.6 96.6 9620 2200
EFD45.2 1040 45.2±0.5 35.4min 21.1±0.3 5.0±0.25 10.9±0.2 16.0±0.2 22.2±0.2 57.3 0.9 101.3 108.9 11032 236.8 101.37
EFD45A 1632 45.0±0.5 30.7±0.4 21.6±0.25 4.15±0.15 6.1±0.15 20.2±0.2 27.6±0.15 53.5 1.2 108.3 88.7 9608.6 1700
EFD45A 1632-1 45.0±0.5 30.7min(31.2) 21.6±0.25 4.15±0.15 6.1±0.15 20.2±0.2 27.6±0.15 52.7 1.23 108.6 85.6 9293.9
EFD45B 1049 45.0±0.5 33.5min 22.5 ±0. 3 5 2.8 ±0 .2 6.0 ±0 .2 5 17.2 ±0.2 22.7 ±0.15 35 1.48 95.0 64.0 6080 197.8 63 1500
EFD46 1039 45.9±0.5 35.7min 23.2±0.3 3.3±0.25 7.6±0.2 16.1±0.2 22.1±0.2 42.5 1.3 100.3 78.3 7859 209.3 73.72
EFD4756 1636 47+0.8 -0.6 36.0min(31.1) 21.6±0.25 6.5±0.15 8.7±0.2 20.8±0.2 28.2±0.2
EFD48 1009 48.0±0.7 35.2min 22.9±0.3 3.5±0.25 6.4±0.3 18.7±0.2 27.0±0.2 52 1.4 119.3 85.5 12043 243.1 77.44 1700
EFD49 1603 49.0±0.5 35.8±0.5 27.0±0.3 3.5±0.2 7.0±0.25 24.3±0.2 31.6±0.2 1.32 124.4 94.6 11760.5
EFD50 884 50.5±0.6 37.5min 21.5±0.3 7.5±0.2 12.0±0.25 18.6±0.2 25.8±0.2 89 0.77 120.8 155.8 18820 308.8 148.8 3000
EFD50A 1016 50.0±0.7 36.0min 26.5±0.4 4.0±0.1 8.0±0.2 18.25±0.2 25.0±0.3 57 1 110.3 106.6 11753 186.2 106 3000
EFD50B 1610 51.0±0.8 34.4min 24.0±0.4 3.2±0.2 6.2±0.2 20.6±0.3 28.0±0.3 54 1.5 119.3 81.8 9765 1600
EFD51 835 51.0±0.8 38.6min 22.9±0.3 5.0±0.15 10.0±0.25 18.8±0.2 26.5±0.2 79 0.86 111.0 128.5 14263 310.2 114.5 2400
EFD51A 964 51.0±0.5 35.5min 22.3±0.3 9.0±0.1 13.5±0.2 22.2±0.2 30.0±0.2 131 0.6 130.9 201.7 26417 304.1 200.7 3500
EFD61.2 1038 61.2±0.6 44.6min 30.7±0.3 6.0±0.25 12.0±0.2 17.0±0.2 25.5±0.2 117 0.6 115.7 190.6 22057 246.5 184.2 3000
EVD25 769 25.1±0.5 19.2min 8.8±0.25 8.3±0.3 12.7-0.5 9.85±0.25 12.9±0.2 24 0.8 58.9 73.1 4300 107.4 107.4 2300