EE CORES
Large Size Ferrite Cores
Introduce of EE core
"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.
| 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 |