EE / EF Cores

Introduce of EE core, EE/ EF Type Cores Soft Ferrite Magnetic Core Mn-Zn Ferrite Magnets

“E-E” and “E-I” combinations became popular choices in”E” shapes. In the typical “E” lamination like EE cores, the center leg (one of three legs) is twice the width of either outer leg. In theory, magnetic flux flowing out of the center leg divides equally and flows into the outer two “E” core legs. Since the outer legs handle half the flux EE cores only need to have half the cross-section that the center leg has. An EE-core structure occupies two outer sides of the coil. This constitutes a “shell” type core structure. The “E” core structure provides better self-shielding and they are easily gapped. For the typical “E” laminations, ferrite snap core and Single-aperture core require a “butt stacked” core. There is no interleaving of laminations. Since “E” cores have two open coil sides, EE cores provide substantial room to bring high current lead wires out from the coil. This also permits good heat dissipation. EE-core is easier to achieve high voltage electrical isolation. The series of ferrite EE cores are including EE80, EE70, EE65, EE55, EE50, EE46, EE42, EE40, EE35, EE33, etc.

Application of EE-core:

Driver transformer, Power Inductor, Power transformer, Wideband transformer, transformers and chokes for switching power supplies, filters, and inductors.

ee ferrite cores magnetic material drawing

ee ferrite cores magnetic material drawing

Type Dimensions(mm)
A B C D E F
EE5 5.25±0.05 2.65±0.05 1.95±0.05 1.35±0.05 3.85Ref 2.0Ref
EE6 6.10±0.2 2.85±0.05 7.95±0.05 1.35±0.05 3.70±0.1 1.90±0.05
EE8A 8.30±0.2 4.00±0.10 3.60±0.2 1.85±0.15 6.0min 3.0±0.1
EE10 10.2±0.3 5.5±0.2 5.0 +0 -0.3 2.5±0.2 7.5min 4.3±0.2
EE11 11.0±0.3 5.5±0.25 5.0±0.25 2.4±0.4 8.0min 4.2±0.2
EE13 13.0±0.4 6.0 +0.2
-0.1
5.9±0.3 2.8 +0
-0.4
9.8min 4.6 +0.3
-0.1
EE13A 13.00±0.3 6.0±0.15 5.9±0.2 2.6±0.2 10.2±0.3 4.6±0.1
EF12.6 12.7±0.4 6.4±0.2 3.6±0.2 3.7±0.2 8.8min 4.65±0.3
EE16A 16.0±0.4 7.3±0.3 5.1 +0
-0.4
4.0±0.2 11.7min 5.2 +0.3
-0
EE16B 16.0±0.4 12.4±0.3 5.1 +0
-0.4
4.0±0.2 12.4min 10.4±0.3
EE16C 16.0±0.3 7.2±0.1 4.8±0.2 3.8±0.2 12.0±0.3 5.2±0.25
EE16D 16.1±0.6 8.05±0.15 4.5±0.2 4.55±0.15 11.3min 5.9±0.2
EEL16 16.0±0.3 12.2±0.2 4.8±0.2 4.0±0.2 12.0±0.3 10.2±0.2
EEL19 19.0±0.3 13.65±0.25 4.85±0.25 4.85±0.25 14.0±0.3 11.4±0.25
EEL25.4 25.4±0.4 15.85±0.3 6.35±0.3 6.35±0.3 19.0±0.3 12.7±0.3
EF16 16.0 +0.7
-0.5
8.2 +0
-0.3
4.7 +0.2
-0.1
4.7 +0
-0.3
11.3min 5.7 +0.4
-0
EE19A 19.0±0.4 8.0±0.3 5.0 +0.2
-0.1
5.0 +0.
-0.5
13.8min 5.6 +0.4
-0.1
EE19B 19.0±0.4 13.6±0.3 5.1 +0
-0.5
5.1 +0
-0.5
14.0min 11.3±0.3
EE19C 19.1±0.3 8.0±0.3 4.8±0.3 4.8±0.3 14.0min 5.7±0.2
EF20 20.0±0.6 9.3 +0
-0.4
5.9 +0
-0.5
5.9 +0
-0.4
14.1min 6.1 +0.4
-0
EE20 20.5±0.5 10.7±0.3 7.0±0.3 5.0±0.3 14.7min 7.0±0.3
EE20A 20.5±0.7 10.7±0.3 7.0±0.4 5.0±0.4 14.0min 7.0±0.3
EE23 22.7±0.3 11.0±0.3 10.2±0.2 7.5 +0
-0.3
16.4 +0.5
-0
7.5 +0
-0.3
EE25A 25.0±0.5 9.9±0.3 6.35±0.25 6.35±0.2 18.6min 6.9±0.3
EE25B 25.0±0.5 9.8±0.2 6.1±0.3 5.8±0.2 18.6min 6.8±0.2
EE25C 25.4±0.6 9.6 +0.3
-0.1
6.75±0.2 6.35±0.25 18.6min 6.5 +0.3
-0.1
EE25D 25.4±0.5 9.8 +0.3
-0.1
6.4±0.3 6.4±0.3 18.6min 6.8 +0.3
-0.1
EE25E 25.0±0.5 12.5±0.3 7.0±0.4 6.8±0.3 17.5min 9.1 ± 0 .2
EE25F 25.0±0.4 10.0±0.2 6.55±0.3 6.55±0.3 18.6±0.3 6.8±0.15
EF25 25.05±0.75 12.55±0.25 7.2±0.3 7.25±0.25 17.5min 8.95±0.25
EE25.4 25.4±0.75 10.0±0.4 6.3±0.3 6.5±0.2 18.7min 6.6±0.4
EE28A 28.0±0.5 16.5±0.5 7.7 +0
-0.5
7.5 +0
-0.5
18.6min 12.3±0.3
EE28B 28.0±0.6 10.5±0.3 11.5±0.25 7.7±0.3 18.6min 5.9±0.3
EE28C 28.0±0.6 16.8±0.2 10.6±0.3 7.2±0.3 18.6min 12.3±0.3
EE30/30 30.5±0.5 14.95±0.3 7.0±0.3 6.9±0.3 19.5min 10.2min
EF32A 32.1±0.8 12.9±0.2 7.65±0.35 9.2±0.3 22.7 +1.0
-0
8.2±0.3
EF32B 32.1±0.8 16.1±0.3 9.5 +0
-0.7
9.5 +0
-0.6
22.7 +1.0
-0
11.5±0.3
EE33 33.0±0.6 14.0±0.3 13.0+0
-0.6
9.7±0.3 22.8 9.6±0.3
EE33A 33.4±0.5 13.95±0.25 12.7±0.3 24.6±0.4 24.6±0.4 9.65±0.25
EE33B 33.0±0.6 13.75±0.25 12.7±0.3 9.7±0.4 23.5 9.25±0.25
EE35A 35.0±0.6 14.6±0.3 9.2±0.3 9.4±0.3 24.8 9.4 +0.4 -0
EE35B 34.54±1.0 14.33±0.35 9.53±0.4 9.39±0.3 25.4 9.7±0.28
EE40A 40.0±0.6 17.0±0.3 10.7±0.3 0.7±0.3 27.6 10.25±0.25
EE40B 40.0±0.7 17.0±0.3 12.0 +0
-0.5
12.0 +0
-0.5
26.8 10.4±0.2
EE41 40.6±0.6 16.5±0.2 12.5±0.25 12.5±0.25 28.6 10.5±0.3
EE42A 42 +1.0
-0.7
21.2±0.4 12.0 +0.2
-0.5
12.0 +0.2
-0.4
29.5 15.0 +0.3
-0.1
EE42B 42 +1.0
-0.7
21.2±0.4 15.0 +0.2
-0.4
12.0 +0.2
-0.4
29.5 15.0 +0.3
-0.1
EE42C 42 +1.0
-0.7
21.2±0.4 20.0 +0.2
-0.5
12.0 +0.2
-0.4
29.5 15.0 +0.3
-0.1
EE42D 42.15±0.85 21.10±0.3 15.0±0.3 12.0±0.3 29.5 15.2±0.4
EE42E 42.15±0.85 21.1±0.3 12.0±0.3 15.9±0.3 29.5 15.2±0.34
EE46 46.4±0.6 18.55±0.25 21.0 +0
-0.8
16.95±0.25 38.1±0.6 11.4±0.3
EE50 50.0±0.7 21.55±0.3 14.6±0.4 14.6±0.4 34.2 13.10±0.3
EE55 55.15±1.05 27.5±0.3 15.9±0.3 16.95±0.25 38.1±0.6 18.8±0.3
EE55A 55.15±1.05 27.5±0.3 20.7±0.3 17.0±0.25 37.5 18.8±0.3
EE55B 55.15±1.05 27.5±0.3 24.7±0.3 17.0±0.25 37.5 18.8±0.3
EE65 65.2±1.3 32.5±0.3 27.4±0.3 19.65±0.35 44.2 22.55±0.35
EE65A 65.2±1.3 32.5±0.3 27.0±0.4 19.65±0.35 44.2 22.55±0.35
EE70 70.50±1.50 35.5±0.5 24.5±0.6 16.70±0.5 48 24.65±0.65
EE70B 70.75±1.50 33.2±0.4 30.5±0.6 21.50±0.5 48 22.00±0.6
EE80 80.50±1.50 38.0±0.5 20.0±0.5 20.00±0.5 59.8 28.0±0.5
Type Coreparameter weight(g/pr.) Al(nH/N2) Pc(W)
C1
(mm-1)
Ae
(mm2)
Ie
(mm)
Ve
(mm3)
F2BD
(±25%)
F2B1
(±25%)
F3
(±25%)
F2B1(max.)
EE5 4.78 2.63 12.6 33.1 0.16 285 0.03
EE6 3.70 3.31 12.2 40.4 0.24 405 0.03
EE8A 2.75 7.0 19.2 134 0.7 610 0.08
EE10 2.1 12.7 26.1 330.7 1.8 810 810 ≥700
EE11 2.21 12.3 27.2 334 1.7
EE13 1.7 17.2 30.0 513.8 3.6 1000 1000 ≥860
EE13A 1.88 16.0 30.3 487 2.4 1000 0.3
EF12.6 2.4 12.4 29.7 369.0 2.0 900 800 ≥650
EE16A 1.92 18.4 35.5 655 3.3 1100 1100 ≥950
EE16B 2.8 19.6 55.2 1080 5.3 750 750 ≥680
EE16C 1.92 18.4 35.5 655 3.2 1100 0.4
EE16D 1.93 19.5 37.7 737 3.7 1100 0.45
EEL16 2.84 19.4 55.0 1070 5.2 800 0.59
EEL19 2.65 23.4 62.1 1450 7.2 840 0.87
EEL25.4 1.82 40.4 73.4 2963 15.0 1330 1.63
EF16 1.87 20.1 37.6 750 4.0 800 800 1000
EE19A 1.68 23.3 39.2 914 4.6 1200 1200 1050
EE19B 2.65 23.4 62.1 1450 7.5 840 840 1000
EE19C 1.74 22.8 39.6 903 4.6 1150 0.55
EF20 1.2 35.6 42.2 1505 7.8 1550 1460 1800
EE20 1.21 39 47.1 1840 9.7 1900 1800 2100
EE20A 1.21 39.0 47.1 1840 9.9 1700 1.01
EE23 0.75 70.0 49.6 3469 17.5 2300 2300 /
EE25A 1.25 39.6 49.5 1963 10.2 1900 1900 ≥1600
EE25B 1.3 36.9 49.4 1823 9.0 1600 1600 ≥1400
EE25C 1.15 43.4 48.2 2091 10.0 1800 1800 1600
EE25D 1.2 40.7 49.2 2004 11 1800 1800 ≥1600
EE25E 1.2 49.2 57.9 2850 13.5 1850 1850 ≥1600
EE25F 1.17 42.2 49.4 2080 10 1950 1.25
EF25 1.340 33.5 44.9 1500 14.8 1900 1900 ≥1630
EE25.4 1.08 44.5 47.9 2130 10.9 2000 1.17
EE28A 0.95 71.6 63.0 4508 35 3060 2850 3400
EE28B 0.57 99.8 48.1 4801 23.5 4000 4000 4500
EE28C 0.82 87.4 73.1 6391 33.5 2806 2650 3200
EE30/30 1.1 59.4 65.5 3879 22 1900 1900 2200
EF32A 0.92 70.1 61.3 4295 21.5 2500 2500 /
EF32B 0.89 83 74 6140 30 2400 2400 /
EE33 0.57 124.0 66.1 8192 40.6 4000 4000 4500
EE33A 0.589 114 67.4 7690 39 3700 4.62
EE33B 0.610 111 67.7 7520 20 3940 4.13
EE35A 0.804 86.2 69.3 5973 31 2600 2600 2990
EE35B 0.83 88.3 69.4 6121 31.5 3200 3000 3680
EE40A 0.6 127 77.0 9922 55 3700 3700 4250
EE40B 0.50 153 76.5 11710 60 4000 4000 4600
EE41 0.50 152.0 77.1 11722 61 4200 4200 4704
EE42A 0.7 147.4 96.8 14275 72 3700 3600 4200
EE42B 0.50 184.3 96.8 17843 90 4700 4700 5400
EE42C 0.4 235 97.4 22889 120 5700 5700 6500
EE42D 0.534 182 97.0 17600 80 4700 1.76*
EE42E 0.415 235 97.4 22900 116 6100 2.29*
EE46 0.6 140.7 84.6 11883 62 3700 3700 /
EE50 0.425 226 95.8 21600 116 6110 2.16*
EE55 0.35 354 123 43542 216 6700 6700 /
EE55A 0.348 354 123 43700 221 7100 4.37*
EE55B 0.292 422 123 52130 265 7200 5.21*
EE65 0.274 540 147 79000 410 8000 8000 /
EE65A 0.274 535 147 78700 390 7800 8.0*
EE70 0.344 461 159 73200 370 6500 7.3*
EE70B 0.226 665 150 99800 500 9000 10.0*
EE80 0.461 399 184 73500 380 4800 7.4*
Type Dimensions(mm)
A B C D E F
EE85A 85.0 +2.0
-2.5
44.0±1.0 26.5±0.5 27.2 +0
-0.6
55.0 28.7 +1.0
-0
EE85B 85.0 +1.0
-2.5
44.0 +.0
-1.0
31.5±0.5 27.2 +0
-0.6
55.0 28.7 +1.0
-0
EE90 90.0±2.0 28.2±0.5 16.5±0.5 25.0±1.0 64.0 15.7 +0
-1.0
EE90A 90.0±2.0 28.2±0.6 16.5±0.5 25.0±0.5 64.0 15.7±0.5
EE90B 90.0±2.0 45.0±0.5 23.0±0.5 23.0±0.5 66.0 33.5±0.5
EE110 110.0 +2.5
-0.1
56.0 +0
-1.0
36.0±1.0 36.0±1.0 74.2 37.2 +1.4
-0
EE118 118.0 +1.5
-2.5
86.5 +0.75
-0.5
35.0±0.7 35.0±0.5 82.0 69.0±0.5
EE128 85.0 +3.0
-2.0
63.0±1.0 20.0±1.0 40.0±2.0 89.0 43.0 +1.0
-0.5
EE130 130.0±3.0 65.0±0.5 40.0±0.5 40.0±0.5 90.0 45.0±0.5
EE140 140.0±2.5 60.0±0.5 60.0±0.5 36.0±0.8 100.0 41.0±0.5
EE160 162.0±2.5 83.0±1.0 20.0±1.5 40.0±2.0 120.0 64.0±1.0
EE185 185.0±3.5 77.0±1.5 27.5±1.0 53.0±1.0 128.0 50.0±1.5
EE186 186.0±2.0 76.5±0.5 60.0±1.0 56.0±0.5 126.0 48.0±0.6
EE190 190.0±2.0 85.0±0.5 40.0±0.5 39.0±0.5 148.0 65.0±0.5
EE195 195.0±2.0 80.0±0.5 30.0±0.5 59.0±0.6 133.0 50.0±0.5
EE196 196.0±0.5 79.5±0.5 30.0±0.5 60.5±0.5 133.0 49.5±0.5
EE210 210.0±2.5 85.0±0.5 40.0±0.5 60.0±0.5 150.0 55.0±0.5
EE240 240.0±0.5 118.0±2.0 40.0±1.0 60.0±2.0 175.0 88.0±2.0
EE260 260.0±2.5 155.0±0.8 37.5±0.5 60.0±0.5 200.0 125.0±0.8
EE320 320.0±5.0 125.0±0.5 20.0±2.0 100.0±2.5 217.0 75.0±1.5
Type Core parameter Weight(g/pr.) Al(nH/N2)
C1
(mm-1)
Ae
(mm2)
Le
(mm)
Ve
(mm3)
F2B1
(±25%)
Pc(W)
EE85A 0.264 714 188 134000 675 8300 2.7
EE85B 0.220 859 189 162000 810 10000 3.24
EE90 0.337 419 141 59100 292 5760 11.82
EE90A 0.337 419 141 59100 570 MP3 6300 MP4 5800
EE90B 0.4 537 213 114565 1560 MP3 5700 MP4 5200
EE110 0.191 1280 244 312000 1560 8000 6.24
EE118 0.328 1240 407 505000 2290 7000 10.1
EE128 0.352 1600 284 454000 2200 12000 4.6
EE130 0.183 1600 293 468800 2560 MP3 12350 MP4 11360
EE140 0.123 2318 84 658170 3327 MP3 17780 MP4 16000
EE160 0.498 1600 398 637000 3200 9000 6.4
EE185 0.24 1488 370 551000 2800 1200 11.0
EE186 0.102 3455 352 1216290 6220 MP3 22200 MP4 20420
EE190 0.268 1610 432 695520 3580 MP3 8420 MP4 7750
EE195 0.204 1808 368 666434 3456 MP3 11100 MP4 10210
EE196 0.196 1783 349 623210 3840 MP3 11540 MP4 10620
EE210 0.175 420 2400 1007760 5120 MP3 12920 MP4 11890
EE240 0.228 2465 562 1386200 6990 MP3 9500 MP4 8800
EE260 0.332 2250 746 1678500 8208 MP3 6820 MP4 6270
EE320 0.289 2000 577 115000 5952 8000 23.08
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MnZn Ferrite E Core EE55 EE28 EE25

MnZn Ferrite E Core EE55/28/25

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Soft Ferrite E Cores EE361811

Soft Ferrite E Cores EE36/18/11

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EE22, EE25, EE25.4, EE28, EE35, EEL19 Ferrite Transformer Cores

EE22, EE25, EE25.4, EE28, EE35, EEL19 Ferrite Transformer Cores

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EE8, EE11, EE10, EE19, EE20 Transformer EE Ferrite Core wo Plastic

EE8, EE11, EE10, EE19, EE20 Transformer EE Ferrite Core w/o Plastic

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EE12, EE13, EE5, EE6, EE16A Mn-Zn Soft Ferrite Cores

EE12, EE13, EE5, EE6, EE16A Mn-Zn Soft Ferrite Cores

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Magnetic Materials Mn-Zn Soft EE Ferrite Core for Transformer

Magnetic Materials Mn-Zn Soft EE Ferrite Core for Transformer

Magnetic Materials Mn-Zn Soft EE Ferrite Core for Transformer, EE Mn-Zn Ferrite Core Iron Powder Core For Transformer, E Shape Transformer Core in China, EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, Soft Ferrite Cores China Factory Supplier […]

Magnetic Ferrite EE Transformer Cores

Magnetic Ferrite EE Transformer Cores

Magnetic Ferrite EE Transformer Cores, EE Mn-Zn Ferrite Core Iron Powder Core For Transformer, E Shape Transformer Core in China, EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, Soft Ferrite Cores China Factory Supplier Magnetic Ferrite EE Transformer […]

EE Mn-Zn Ferrite Core Iron Powder Core For Transformer

EE Mn-Zn Ferrite Core Iron Powder Core For Transformer

EE Mn-Zn Ferrite Core Iron Powder Core For Transformer, E Shape Transformer Core in China, EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, High Permeability Mn-Zn Iron Powder Cores EE type for Ferrite Core, Soft Ferrite Cores China […]

Vertical Mount EE Ferrite Core Transformer Bobbin

Vertical Mount EE Ferrite Core Transformer Bobbin

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Soft Magnetic Mn-Zn Ferrite Core EE Core

Soft Magnetic Mn-Zn Ferrite Core EE Core

Soft Magnetic Mn-Zn Ferrite Core EE Core, E Shape Transformer Core in China, EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, High Permeability Mn-Zn Iron Powder Cores EE type for Ferrite Core, Soft Ferrite Cores China Supplier Soft […]

E Shape Transformer Core in China

E Shape Transformer Core in China

E Shape Transformer Core in China, EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, High Permeability Mn-Zn Toroidal Ferrite Core, Iron Powder Cores EE type for Ferrite Core, Soft Ferrite RS type Toroid core […]

EE Type Soft Magnetic Core Mn-Zn Ferrite

EE Type Soft Magnetic Core Mn-Zn Ferrite

EE Type Soft Magnetic Core Mn-Zn Ferrite, E Core EE Core, MnZn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, High Permeability Mn-Zn Toroidal Ferrite Core, Iron Powder Cores EE type for Ferrite Core, Soft Ferrite RS type Toroid core China Supplier EE Type Soft Magnetic […]

Ferrite EE Cores

Ferrite EE Cores

Ferrite EE Cores, EE Soft Ferrite Cores, E Core EE Core, MnZn Ferrite Sendust Cores, Uncoated Epoxy Parylene Coated Ferrite Core Magnets, Small Size Soft Ferrite EE Core Magnet, High Permeability Mn-Zn Toroidal Ferrite Core, Iron Powder Cores EE type for Ferrite Core, Soft Ferrite RS type Toroid core China Supplier Soft Ferrite EE Cores –  […]