MnZn High Permeability Material

EP Core

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Features of EP Cores

EP Cores are round center-post cubical shapes, which enclose the coil completely. This particular shape minimizes the effect of air gaps formed at mating surfaces in the magnetic path and provides a larger volume ratio to total space used. Shielding is excellent. Special advantages of ferrite EP Core assemblies: wide core selection like; high packaging density on PCBs; choice of linear or flat temperature characteristics; consistency and uniformity.

Application of EP Cores

High permeability EP-core can be used as EMI filter core, choke coil core, power inductor core, and for telecommunication like xDSL modem transformers. EP-core can meet low THD (Total Harmonic Distortion) over a wide temperature range and wide frequency range. Therefore EP cores are suitable for high performance transformer design for xDSL modem application.

Type Dimensions (mm)
A B C Dmin E F G
EP7 9.2±0.2 3.7±0.2 3.4 +0
         -0.2
6.6 +0
         -0.4
7.6 +0
         -0.4
2.6±0.2
EP7A 9.2±0.2 3.7±0.05 3.3±0.1 6.35±0.15 7.4±0.2 2.6±0.1 1.8
EP10 11.5±0.3 5.1±0.2 3.3±0.2 7.9 +0
         -0.4
9.6 +0
         -0.4
3.7±0.2
EP10A 11.5±0.3 5.1±0.1 3.3±0.15 7.65±0.2 9.4±0.2 3.7±0.1 1.85±0.1
EP13 12.5±0.3 6.5±0.3 4.4±0.2 9.0±0.2 10.0±0.3 4.8±0.2
EP13A 12.5±0.4 6.5 +0
         -0.15
4.35±0.15 8.8±0.2 10.0±0.3 4.7±0.1 2.4
EP17 18.1±0.4 8.4±0.4 5.9 +0
         -0.4
11.3 +0
         -0.6
12.0±0.4 5.7±0.2
EP17A 18.0±0.5 8.5±0.2 5.65±0.2 11.0±0.25 12.0±0.4 5.65±0.15 3.25
EP20 24±0.5 10.7±0.2 8.8±0.3 15.0±0.4 16.5±0.4 6.9±0.2
EP20A 24±0.5 10.7±0.1 8.75±0.25 14.95±0.35 16.5±0.4 7.15±0.15 4.4
EP30 31.0±0.5 15.0 +0
            -0.15
14.75±0.25 23.1±0.5 24.0±0.4 11.7±0.25 7.6±0.25
Type Core parameter weight(g/pr.) Al(nH/N2)(±30%)
C1
(mm-1)
Ae
(mm2)
Ie
(mm)
Ve
(mm3)
F7 Pc(W)
EP7 1.52 10.3 15.7 163 1.4 3640 4200
EP7A 1.52 10.3 15.7 162 1.4 3600 5200
EP10 1.7 11.3 19.2 218 2.8 3360 3860
EP10A 1.7 11.3 19.2 217 2.8 3300 4700
EP13 1.24 19.6 24.2 476 5.2 4200 5600
EP13A 1.24 19.5 24.2 472 5.1 4900 7000
EP17 0.84 33.9 28.5 966 12 / 8000
EP17A 0.84 33.9 28.5 966 12 8850 12650
EP20 0.51 78 39.8 3120 28 / 13500
EP20A 0.508 78 39.8 3120 28 19500 19350
EP30 0.351 179 11200 11200 75
Al :1kHz,0.5mA,100Ts
Pc:25kHz,200mT,100 ( LP2)
     100kHz,100mT,100 ( LP3 )