Shaped Cores

• Characteristics: More than 10 different shaped cores and combinations
  Special shaped cores can increase storage capacity
  Suitable for small dimensions, large currents designs
  Suitable for high difficulty winding and assembly type inductors
• Applications: Solar cell inverters, Boost inductors,
  Flyback transformers,
  Output chokes for SMPS,
  Small dimension DC/DC converters,
  PFC, AC Reactors for inverters.

• Block Cores
• E Cores
• EQ Cores
• EQ+I Cores
• EER Cores
• ER Cores
• U Cores
• Ellipse Cores
• Round Block + Cylinder Cores
• Cylinder Cores
• Planar E + I Cores

Block Cores

Part No.	Dimensions (mm)			Path length (cm)	Cross Section Area (㎠)	4PCS AL value (nH/N²)±12%
	A Length	B Width	C Height			026μ	040μ	060μ
BK5315	50.5±0.5	30.3±0.3	15±0.2	18.71	4.5	95	121	181
BK5320	50.5±0.5	30.3±0.3	20±0.2	18.28	6	130	165	247
BK6315	60.5±0.5	30.3±0.3	15±0.2	22.71	4.5	79	100	149
BK6320	60.5±0.5	30.3±0.3	20±0.2	22.28	6	107	135	203
BK7315	70.5±0.5	30.3±0.3	15±0.2	26.71	4.5	67	85	127
BK7320	70.5±0.5	30.3±0.3	20±0.2	26.28	6	91	115	172
BK8315	80.5±0.5	30.3±0.3	15±0.2	30.71	4.5	58	74	110
BK8320	80.5±0.5	30.3±0.3	20±0.2	30.28	6	78	100	149
BK9315	90.5±0.5	30.3±0.3	15±0.2	34.71	4.5	51	65	98
BK9320	90.5±0.5	30.3±0.3	20±0.2	34.28	6	68	88	132
BK5020	50.5±0.5	20.3±0.3	20±0.2	18.28	4	87	110	165
BK6020	60.5±0.5	20.3±0.3	20±0.2	22.28	4	71	90	135
BK6020	60.5±0.5	20.3±0.3	25±0.2	21.85	5	91	115	173
BK7020	70.5±0.5	20.3±0.3	20±0.2	26.28	4	60	77	115
BK7020	70.5±0.5	20.3±0.3	25±0.2	25.85	5	77	97	146
BK8020	80.5±0.5	20.3±0.3	20±0.2	30.28	4	52	66	100
BK8020	80.5±0.5	20.3±0.3	25±0.2	29.85	5	66	84	126

E Cores

　 　 　 　 　

Part No.	Dimensions (mm)								Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D(min)	E(min)	F	L(nom)	M(min)			026μ	040μ	060μ	090μ
ES 1908A	19.3±0.3	8.1±0.2	4.8±0.2	5.5	13.9	4.8±0.2	2.3	4.7	4.01	0.228	26	35	48	69
ES 2510A	25.1±0.3	9.6±0.2	6.5±0.2	6.2	18.8	6.1±0.2	3	6.3	4.85	0.385	39	52	70	100
ES 3015A	30.1±0.3	15.0±0.2	7.1±0.2	9.7	19.5	7.0±0.2	5.1	6.4	6.56	0.601	33	46	71	92
ES 3515A	34.5±0.3	14.1±0.2	9.3±0.2	9.6	25.3	9.3±0.2	4.4	7.9	6.94	0.84	56	75	102	146
ES 4117A	40.9±0.6	16.5±0.3	12.5±0.3	10.4	28.3	12.5±0.3	6	7.9	7.75	1.52	88	119	163	234
ES 4321A	42.8±0.7	21.1±0.4	10.8±0.3	15	30.4	11.7±0.3	5.9	9.5	9.84	1.28	56	76	105	151
ES 4321B	42.8±0.7	21.1±0.4	15.4±0.3	15	30.4	11.7±0.3	5.9	9.5	9.84	1.83	80	108	150	217
ES 4321C	42.8±0.7	21.1±0.4	20.0±0.3	15	30.4	11.7±0.3	5.9	9.5	9.84	2.37	104	140	194	281
ES 5528A	54.9±0.8	27.6±0.4	20.6±0.4	18.5	37.5	16.8±0.4	8.4	10.3	12.3	3.5	116	157	219
ES 5528B	54.9±0.8	27.6±0.4	24.6±0.4	18.5	37.5	16.8±0.4	8.4	10.3	12.3	4.17	138	187	261
ES 6533A	65.1±1.0	32.5±0.5	27.0±0.4	22.2	44.2	19.7±0.4	10	12.1	14.7	5.4	162	230	300
ES 7228A	72.4±1.1	27.9±0.5	19.0±0.4	17.8	52.6	19.1±0.4	9.5	16.9	13.7	3.68	130	173	236
ES 8038A	80.0±1.2	38.1±0.6	19.8±0.4	28.1	59.3	19.8±0.4	9.9	19.8	18.5	3.89	103	145	190

EQ Cores

Part No.	Dimensions (mm)						Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D	E	F			026μ	040μ	060μ
KEQ 2014A	20.5 ±0.3	14.0 ±0.2	8.1 ±0.2	8.8 ±0.2	18.0 ±0.2	5.7 ±0.3	4.52	0.608	44	68	101
KEQ 2014B	20.5 ±0.3	14.0 ±0.2	10.1 ±0.2	8.8 ±0.2	18.0 ±0.2	7.7 ±0.3	5.32	0.608	37	57	86
KEQ 2619A	26.5 ±0.3	19.0 ±0.2	10.1 ±0.2	12.0 ±0.2	22.6 ±0.3	6.8 ±0.3	5.47	1.198	72	110	165
KEQ 2619B	26.5 ±0.3	19.0 ±0.2	12.4 ±0.2	12.0 ±0.2	22.6 ±0.3	9.1 ±0.3	6.39	1.198	61	94	141
KEQ 3222A	32.0 ±0.4	22.0 ±0.3	10.3 ±0.2	13.5 ±0.2	27.6 ±0.3	6.6 ±0.3	6.03	1.523	83	127	190
KEQ 3222B	32.0 ±0.4	22.0 ±0.3	15.2 ±0.2	13.5 ±0.2	27.6 ±0.3	11.5 ±0.3	7.99	1.523	62	96	144
KEQ 3626A	36.0 ±0.5	26.0 ±0.3	17.4 ±0.3	14.4 ±0.2	32.0 ±0.4	13.4 ±0.3	9.47	1.808	62	96	144
KEQ 4128A	41.5 ±0.5	28.0 ±0.4	19.9 ±0.3	14.9 ±0.2	36.5 ±0.4	15.4 ±0.3	11.52	1.997	57	87	131
KEQ 5032A	50.0 ±0.6	32.0 ±0.4	25.0 ±0.4	20.0 ±0.3	44.0 ±0.5	19.5 ±0.4	13.34	3.141	77	118	178
※ KEQ (MegaFlux Cores), HEQ (High Flux Cores), SEQ (Sendust Cores) and customized designs are also available.
※ Sendust: available up to 40μ

EQ+I Cores

　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　

Part No.	Dimensions (mm)							Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D	E	F	I			026μ	040μ	060μ
HEQ 2014A	20.5 ±0.3	14.0 ±0.2	8.1 ±0.2	8.8 ±0.2	18.0 ±0.2	5.7 ±0.3		3.38	0.608	59	90	135
HI 2014A	20.5 ±0.3	14.0 ±0.2					2.4 ±0.2
HEQ 2014B	20.5 ±0.3	14.0 ±0.2	10.1 ±0.2	8.8 ±0.2	18.0 ±0.2	7.7 ±0.3		3.78	0.608	52	81	121
HI 2014A	20.5 ±0.3	14.0 ±0.2					2.4 ±0.2
HEQ 2619A	26.5 ±0.3	19.0 ±0.2	10.1 ±0.2	12.0 ±0.2	22.6 ±0.3	6.8 ±0.3		4.11	1.198	95	146	220
HI 2619A	26.5 ±0.3	19.0 ±0.2					3.3 ±0.2
HEQ 2619B	26.5 ±0.3	19.0 ±0.2	12.4 ±0.2	12.0 ±0.2	22.6 ±0.3	9.1 ±0.3		4.57	1.198	85	132	197
HI 2619A	26.5 ±0.3	19.0 ±0.2					3.3 ±0.2
HEQ 3222A	32.0 ±0.4	22.0 ±0.3	10.3 ±0.2	13.5 ±0.2	27.6 ±0.3	6.6 ±0.3		4.71	1.523	105	162	244
HI 3222A	32.0 ±0.4	22.0 ±0.3					3.7 ±0.2
HEQ 3222B	32.0 ±0.4	22.0 ±0.3	15.2 ±0.2	13.5 ±0.2	27.6 ±0.3	11.5 ±0.3		5.69	1.523	87	134	202
HI 3222A	32.0 ±0.4	22.0 ±0.3					3.7 ±0.2
HEQ 3626A	36.0 ±0.5	26.0 ±0.3	17.4 ±0.3	14.4 ±0.2	32.0 ±0.4	13.4 ±0.3		6.79	1.808	87	134	201
HI 3626A	36.0 ±0.5	26.0 ±0.3					4.0 ±0.3
HEQ 4128A	41.5 ±0.5	28.0 ±0.4	19.9 ±0.3	14.9 ±0.2	36.5 ±0.4	15.4 ±0.3		8.44	1.997	77	119	178
HI 4128A	41.5 ±0.5	28.0 ±0.4					4.5 ±0.3
HEQ 5032A	50.0 ±0.6	32.0 ±0.4	25.0 ±0.4	20.0 ±0.3	44.0 ±0.5	19.5 ±0.4		9.44	3.141	109	167	251
HI 5032A	50.0 ±0.6	32.0 ±0.4					5.5 ±0.4
※ Sendust: available up to 40μ

EER Cores

Part No.	Dimensions (mm)						Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D	E	F			026μ	040μ	060μ
HER 2507A	25.5±0.3	9.3±0.2	7.5±0.2	7.5±0.2	19.8±0.2	6.2	5.1	0.45	39	53	73
HER 2507B	25.5±0.3	11.0±0.2	7.5±0.2	7.5±0.2	19.8±0.2	7.9	5.78	0.45	34	47	65
HER 3010A	30.6±0.3	15.8±0.2	9.8±0.2	9.8±0.2	22.0±0.2	11	8.66	0.754	38	53	72
HER 3511A	35.0±0.4	15.8±0.2	11.3±0.2	11.3±0.2	25.6±0.3	9.8	8.3	1.078	57	78	108
HER 3511B	35.0±0.4	20.7±0.2	11.3±0.2	11.3±0.2	25.6±0.3	14.7	10.27	1.078	46	63	87
HER 4013A	40.0±0.5	17.4±0.3	13.3±0.3	13.3±0.3	29.0±0.4	10.4	9.13	1.491	72	99	135
HER 4013B	40.0±0.5	22.4±0.3	13.3±0.3	13.3±0.3	29.0±0.4	15.4	11.13	1.491	59	81	111
HER 4215A	42.0±0.6	22.4±0.4	15.5±0.4	15.5±0.4	29.4±0.5	15.4	10.64	2.026	84	115	158
HER 4215B	42.0±0.6	25.4±0.4	15.5±0.4	15.5±0.4	29.4±0.5	18.4	11.84	2.026	75	103	142
HER 4917A	49.0±0.7	18.8±0.5	17.2±0.5	17.2±0.5	36.5±0.6	12.2	9.57	2.353	99	136	185
HER 4917B	49.0±0.7	24.7±0.5	17.2±0.5	17.2±0.5	36.5±0.6	18.1	11.93	2.353	79	109	149
※ HER (High Flux Cores), KER (MegaFlux Cores), SER (Sendust Cores) and customized designs are also available.

ER Cores

Part No.	Dimensions (mm)						Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D	E	F			026μ	040μ	060μ
RH1911A	18.8±0.3	11.0±0.2	6.0±0.2	7.4±0.2	15.6±0.2	4.0±0.2	3.54	0.425	39	60	90
RH2314A	23.4±0.3	14.0±0.2	8.7±0.2	9.2±0.2	19.4±0.2	6.2±0.2	4.91	0.67	45	69	103
RH2518A	25.0±0.3	18.0±0.2	8.4±0.2	11.0±0.2	21.0±0.3	5.4±0.2	4.97	0.96	63	97	146
RH2518B	25.0±0.3	18.0±0.2	10.8±0.2	11.0±0.2	21.0±0.3	7.8±0.2	5.93	0.96	53	81	122
RH3020A	30.0±0.4	20.0±0.3	9.2±0.2	12.0±0.2	25.6±0.3	5.9±0.2	5.81	1.14	64	99	148
RH3020B	30.0±0.4	20.0±0.3	11.8±0.2	12.0±0.2	25.6±0.3	8.5±0.2	6.85	1.14	54	84	125
RH3222A	32.0±0.4	22.0±0.3	10.3±0.2	13.5±0.2	27.0±0.3	6.6±0.2	6.25	1.43	75	115	172
RH3222B	32.0±0.4	22.0±0.3	13.4±0.2	13.5±0.2	27.0±0.3	9.7±0.2	7.49	1.43	62	96	144
RH3222C	32.0±0.4	22.0±0.3	15.2±0.2	13.5±0.2	27.0±0.3	11.5±0.2	8.21	1.43	57	88	131
RH3624A	36.2±0.4	24.0±0.3	11.2±0.2	15.0±0.2	30.4±0.4	7.2±0.2	6.78	1.77	85	131	197
RH3624B	36.2±0.4	24.0±0.3	14.4±0.2	15.0±0.2	30.4±0.4	10.4±0.2	8.06	1.77	72	110	166
RH4225A	42.0±0.5	25.0±0.3	12.3±0.2	16.2±0.3	35.2±0.4	7.9±0.2	7.61	2.06	88	136	204
RH4225B	42.0±0.5	25.0±0.3	15.8±0.2	16.2±0.3	35.2±0.4	11.4±0.2	9.01	2.06	75	115	172
RH4628A	46.5±0.6	28.0±0.5	19.0±0.4	14.9±0.4	39.3±0.5	14.5±0.3	9.81	2.08	69	106	159
※ RH (High Flux Cores), RK (MegaFlux Cores) and customized designs are also available.

U Cores

Part No.	Dimensions (mm)						Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A	B	C	D	E	F			026μ	040μ	060μ
UK3536A	35.0±0.5	36.0±0.5	20.0±0.5	25	13	11.0±0.3	16.9	2.2	43	65	98
UK3536B	35.0±0.5	36.0±0.5	25.0±0.5	25	13	11.0±0.3	16.9	2.75	53	82	123
UK4141A	41.0±0.6	41.0±0.6	20.0±0.5	28	15	13.0±0.3	19.3	2.6	44	68	102
UK4141B	41.0±0.6	41.0±0.6	25.0±0.5	28	15	13.0±0.3	19.3	3.25	55	85	127
UK4141C	41.0±0.6	41.0±0.6	30.0±0.5	28	15	13.0±0.3	19.3	3.9	66	102	152
UK5251A	52.0±0.7	51.0±0.7	25.0±0.5	35	20	16.0±0.4	24.3	4	54	83	124
UK5251B	52.0±0.7	51.0±0.7	30.0±0.5	35	20	16.0±0.4	24.3	4.8	65	99	149
UK6361A	63.0±0.8	60.5±0.8	30.0±0.5	41.5	25..0	19.0±0.4	29.1	5.7	64	98	148
UK6361B	63.0±0.8	60.5±0.8	35.0±0.5	41.5	25	19.0±0.4	29.1	6.65	75	115	172
UK7965A	79.0±1.0	64.5±1.0	30.0±0.5	42.5	35	22.0±0.5	32.6	6.6	66	102	153
UK7965B	79.0±1.0	64.5±1.0	35.0±0.5	42.5	35	22.0±0.5	32.6	7.7	77	119	178

Ellipse Cores

Part No.	Dimensions (mm)				Cross Section Area (㎠)	Post
	A Length	B Width	C Radius	D Height
LK3515A	35.3 ±0.3	15.2 ±0.2	7.5 ±0.2	20.0 ±0.2	4.77	LK5035A LK6035A LK7035A
LK3515B	35.3 ±0.3	15.2 ±0.2	7.5 ±0.2	25.0 ±0.2	4.77
LK3520A	35.3 ±0.3	20.2 ±0.2	7.5 ±0.2	20.0 ±0.2	6.52
LK3520B	35.3 ±0.3	20.2 ±0.2	7.5 ±0.2	25.0 ±0.2	6.52
LK5035A	50.5±0.5	35.3±0.3	7.5±0.2	13.5±0.2	4.77	LK3515A
LK5035B	50.5±0.5	35.3±0.3	7.5±0.2	18.5±0.2	6.52
LK6035A	60.5±0.5	35.3±0.3	7.5±0.2	13.5±0.2	4.77	LK3515B
LK6035B	60.5±0.5	35.3±0.3	7.5±0.2	18.5±0.2	6.52
LK7035A	70.5±0.5	35.3±0.3	7.5±0.2	13.5±0.2	4.77	LK3520A
LK7035B	70.5±0.5	35.3±0.3	7.5±0.2	18.5±0.2	6.52
LK8035A	80.5±0.5	35.3±0.3	7.5±0.2	13.5±0.2	4.77	LK3520B
LK8035B	80.5±0.5	35.3±0.3	7.5±0.2	18.5±0.2	6.52
※LS(Sendust Ellipse Core), LH(High Flux Ellipse Core) and customized designs are also available.

Round Block + Cylinder Cores

Part No.	Dimensions (mm)				Cross Section Area (㎠)	POST
	A Length	B Width	RC RC	D Height
RBK5420A	54.5±0.5	20.2±0.3	10.0±0.2	15.7±0.2	3.14	CK2020
RBK6424A	64.5±0.5	24.2±0.3	12.0±0.2	18.8±0.2	4.52	CK2424
RBK6725A	67.5±0.5	25.2±0.3	12.5±0.2	19.6±0.2	4.91	CK2525
RBK7428A	74.5±0.5	27.5±0.3	13.7±0.2	21.7±0.2	6	CK2828
RBK8030A	80.5±0.5	30.2±0.3	15.0±0.2	23.5±0.2	7.07	CK3030

Part No.	Dimensions (mm)		1Turn length(mm)	Cross Section Area (㎠)	Plate
	OD	HT
CK2020	20.2±0.3	20.2±0.2	62.8	3.14	RBK5420-15
CK2424	24.2±0.3	24.2±0.2	75.4	4.52	RBK6424-18
CK2525	25.2±0.3	25.2±0.2	78.5	4.91	RBK6725-19
CK2828	27.5±0.3	28.0±0.2	86.4	6	RBK7428-21
CK3030	30.2±0.3	30.0±0.2	94.2	7.07	RBK8030-23

Part No.	Post		Dimensions (mm)					Path Length (cm)	Cross Section Area (㎠)	Window Area (㎠)	AL value (nH/N2) ±12%
	Part No.	1 LEG STACK	A Length	B Width	C Height	D Inner Height	E Inner Length				026μ	040μ	060μ
RBK5420A	CK2020	1	54	20	51.4	20	14	12.41	3.14	2.8	99	127	191
		2	54	20	71.4	40	14	16.41	3.14	5.6	75	96	144
		3	54	20	91.4	60	14	20.41	3.14	8.4	60	77	116
RBK6424A	CK2424	1	64	24	61.6	24	16	14.72	4.52	3.84	120	154	232
		2	64	24	85.6	48	16	19.52	4.52	7.68	90	116	175
		3	64	24	109.6	72	16	24.32	4.52	11.52	72	93	140
RBK6725A	CK2525	1	67	25	64.2	25	17	15.41	4.91	4.25	124	160	240
		2	67	25	89.2	50	17	20.41	4.91	8.5	94	121	181
		3	67	25	114.2	75	17	25.41	4.91	12.75	75	97	146
RBK7428A	CK2828	1	74	27.5	71.4	28	19	17.13	6	5.32	136	176	264
		2	74	27.5	99.4	56	19	22.73	6	10.64	103	133	199
		3	74	27.5	127.4	84	19	28.33	6	15.96	83	106	160
RBK8030A	CK3030	1	80	30	77	30	20	18.4	7.07	6	150	193	290
		2	80	30	107	60	20	24.4	7.07	12	113	146	218
		3	80	30	137	90	20	30.4	7.07	18	91	117	175

Cylinder Cores

Part No.	Dimensions (mm)		Cross Section Area (㎠)
	OD	HT
CK2020	20.2 ±0.2	20.0 ±0.2	3.14
CK2424	24.0 ±0.2	24.0 ±0.2	4.5
CK2525	25.0 ±0.2	25.0 ±0.2	4.91
CK2825	27.6 ±0.3	25.0 ±0.2	6
CK2830	27.6 ±0.3	30.0 ±0.2	6
CK3026	30.0 ±0.5	26.0 ±0.2	7.07
CK3030	30.0 ±0.5	30.0 ±0.2	7.07
CK3035	30.0 ±0.5	34.7 ±0.2	7.07
CK3530	35.0 ±0.5	30.0 ±0.2	9.62
CK3735	37.0 ±0.5	35.25 ±0.2	10.75
CK4030	40.0 ±0.6	30.0 ±0.3	12.56
CK4230	42.0 ±0.6	30.0 ±0.3	13.85
CK4630	46.0 ±0.6	30.0 ±0.3	16.61
CK5030	50.0 ±0.7	30.0 ±0.4	19.63
CK5530	55.0 ±0.7	30.0 ±0.4	23.76
CK6030	60.0 ±0.8	30.0 ±0.5	28.27
CK6330	63.0 ±0.8	30.0 ±0.5	31.17
CK6830	68.0 ±0.8	30.0 ±0.5	36.31

Planar E + I Cores

　 　 　 　 　 　 　 　 　 　

Part No.	Dimensions (mm)							Path length (cm)	Cross Section Area (㎠)	AL value (nH/N²) ±12%
	A(mm)	B(mm)	C(mm)	D(mm)	E(mm)	F(mm)	H, I(mm)			026μ	040μ	060μ
PEH 1810A	18.0±0.3	10.0±0.2	4.0±0.2	4.0±0.2	14.0±0.2	2.0±0.3	2.0±0.2	2.03	0.394	63	98	146
PIH 1810A	18.0±0.3	10.0±0.2					2.0±0.2
PEH 2216A	21.8±0.3	15.8±0.2	5.7±0.2	5.0±0.2	16.8±0.2	3.2±0.3	2.5±0.2	2.61	0.78	98	50	225
PIH 2216A	21.8±0.3	15.8±0.2					2.5±0.2
PEH 3220A	31.8±0.3	20.3±0.2	6.4±0.2	6.4±0.2	25.4±0.3	3.2±0.3	3.2±0.2	3.55	1.283	118	182	272
PIH 3220A	31.8±0.3	20.3±0.2					3.2±0.2
PEH 3825A	38.0±0.3	25.4±0.2	8.2±0.2	7.6±0.2	30.4±0.3	4.4±0.3	3.8±0.2	4.35	1.906	143	220	330
PIH 3825A	38.0±0.3	25.4±0.2					3.8±0.2
PEH 4328A	43.2±0.4	27.9±0.3	9.5±0.2	8.2±0.2	35.0±0.3	5.4±0.3	4.1±0.2	5.05	2.257	146	225	337
PIH 4328A	43.2±0.4	27.9±0.3					4.1±0.2