power inductor core,choke coil core,EMI filter core,EP cores,EP7 core,EP10 core,EP13 core, China Professional Ferrite Core Supplier print version EP CORES Description of EP Cores The EP core, widely used in power inductor core, choke coil core, EMI filter core, etc., design combines the selfshielding feature of a pot core with the coil lead accessibility of “E” cores in a small package. The core wraps around the coil on the top, bottom, and three sides of the coil; but leaves one side of the coil open to bring out wires. Although the one side is open, the coil is completely recessed into the core. Because of the one open side, the amount of self-shielding of the EP core (by itself) is less than that of the pot core. However, the selfshielding improves when a ground plane is placed over the open side. EP cores are usually mounted on a printed circuit board with the open side against the printed circuit board. If good shielding is required, a grounded section of copper is provided on the printed circuit board under the EP core and coil. Mounted in this way, the “EP” shielding comes very close to that of a “Pot” core. Once mounted the coils becomes completely enclosed. Consequently, heat dissipation is poor. The EP core has a round center leg to minimize winding losses. 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. The EP Cores series are widely including EP7 core, EP10 core, EP13 core, EP17 core, EP20 core, can be used as EMI filter core, choke coil core, power inductor core, etc. Special advantages of EP Core assemblies: 1. 2. 3. 4. wide core selection like EP10 cores, EP13 cores, EP17 cores, EP20 cores, EP30 cores; high packaging density on PCBs; choice of linear or flat temperature characteristics; consistency and uniformity. Application of EP Cores EP cores are used for compact transformer designs with high inductance and high economy of space.EP core applications: wide-band transformers and various types of inductors, choke coil core, EMI filter core, power inductor core. Application of EP Cores EP cores are used for compact transformer designs with high inductance and high economy of space.EP core applications: wide-band transformers and various types of inductors, choke coil core, EMI filter core, power nductor core. power inductor core,choke coil core,EMI filter core,EP cores,EP7 core,EP10 core,EP13 core, Type EP7A EP10A A 9.2±0.2 11.5±0.3 EP13A 12.5±0.4 B 3.7±0.05 5.1±0.1 6.5 +0 EP17A EP20A EP30 18.0±0.5 24±0.5 31.0±0.5 8.5±0.2 10.7±0.1 15.0 +0 -0.15 Type EP7A EP10A EP13A EP17A EP20A EP30 -0.15 Dimensions(mm) C Dmin E 3.3±0.1 6.35±0.15 7.4±0.2 3.3±0.15 7.65±0.2 9.4±0.2 F 2.6±0.1 3.7±0.1 G 1.8 1.85±0.1 4.35±0.15 8.8±0.2 10.0±0.3 4.7±0.1 2.4 5.65±0.2 8.75±0.25 14.75±0.25 11.0±0.25 14.95±0.35 23.1±0.5 12.0±0.4 16.5±0.4 24.0±0.4 5.65±0.15 7.15±0.15 11.7±0.25 3.25 4.4 7.6±0.25 Core parameter -1 C1 (mm ) Ae (mm2) Ie (mm) Ve (mm3) 1.52 10.3 15.7 163 1.7 11.3 19.2 217 1.24 19.5 24.2 472 0.84 33.9 28.5 966 0.508 78 39.8 3120 0.351 179 11200 11200 weight (g/pr. ) 1.4 2.8 5.1 12 28 75 Al(nH/N2)±30% F2BD F2B1 880 830min 850 800min 1250 1170min 1950 1840min 3450 3200min 5450 5200min Al :1kHz,0.5mA,100Ts Pc:25kHz,200mT,100 ( F2BD) 100kHz,100mT,100 ( F2B1) Copyright 2005 YUXIANG Magnetic Materials Ind. Co.,Ltd.All Rights Reserved. Add:16F1,jinyuan building,NO.57,hubin S.Rd.,Xiamen,China.361004 Tel : (86)592 2225286 (86)592 2219816 (86)592 2217138 Fax: (86)592 2207122 Email : [email protected] [email protected] http://www.magnet-tech.com/product/MnZn/mnzn_power_ferrite/EP.htm（第 2／3 页）6/2/2007 9:59:55 AM PC(W)(max) F2BD F2B1 0.025 0.09 0.03 0.11 0.06 0.24 0.11 0.49 0.4 1.56 1.7 5.6