China Professional Ferrite Core Supplier

EE 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
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*