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Powder Cores

Ferrite Cores

Ferrite Shapes

Ferrites for high frequency power supply and high quality communication markets are produced in a variety of shapes and sizes for inductors, pulse transformers, high frequency transformers, and noise filters. Magnetics^® offers ferrite cores in a variety of geometries which are categorized as Shapes; E, I, EFD, ETD, EER, EC, U, UR, Planar E and I, and ER cores. Hardware is available for most sizes.

Learn More about Ferrite Shapes

Ferrite Material Characteristics

E Cores

	A_L nH/T² (nominal)
Part #	L 900µ	R 2300µ	P 2500µ	F 3000µ	J 5000µ	W 10000µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
0904			540		1,040		15.6	5	78		9	4.06	1.91
1203		587					27.8	10.1	279	0.001	12.7	5.69	3.18
1205				1,950	3,300		27.8	30.3	837	0.059	12.7	5.69	9.62
1707			1,100				30.4	16.6	505	0.03	16.8	7.1	3.56
1808	550	1,153	1,253	1,500	2,500	4,293	39.9	22.6	900	0.07	19.1	8.1	4.75
1810			2,500	3,000	5,000		40.1	45.5	1,820	0.15	19.13	8.1	9.53
2510	800	1,767	1,920	2,300	3,700	6,180	49	39.5	1,930	0.16	25.4	9.65	6.35
2513		1,900	2,491				57.8	51.8	2,990	0.24	25	12.8	7.5
2515		1,153	1,253	1,500	2,400	4,107	73.5	78.4	2,950	0.42	25.4	15.9	6.35
2520		3,533	3,840			13,813	48	76.8	3,760	0.21	25.4	9.65	12.7
2526		2,800	3,784				57.5	78.4	4,500	0.51	25	12.8	11
2530			2,507				73.5	80.2	5,900	0.84	25.4	15.9	12.7
3007		2,060	2,240	2,700	3,800	8,200	67	60	4,000	0.5	30.8	15.01	7.3
3009			3,147				61.9	83.2	5,150	0.74	30.95	13.1	9.4
3515		2,667	2,907	3,500	5,813	10,653	69.3	87	5,590	0.85	34.2	14.1	9.3
3520		1,947		2,555			94.3	90.6	8,540	1.68	34.9	20.62	9.53
4011			4,347				76.7	127	9,780	1.39	40.01	17	10.69
4016			2,907				98.4	107	10,500	2.08	42.15	21.1	9
4020		4,600	5,000	6,000	9,700		97	178	17,300	3.55	43	21	15.2
4022		5,533	6,013	7,600	10,613		97	233	22,700	4.59	43	21	20
4033		4,000	4,709				145	236	34,200	4.48	42	32.8	20
4317		3,900	4,240	5,900	9,800	18,293	77	149	11,500	1.48	40.6	16.6	12.4
4721		5,360	5,827	8,300			88.9	234	20,800	2.77	46.9	19.6	15.6
5528		6,293	6,840	8,220			124	353	44,000	9.91	56.2	27.5	21
5530		7,520	8,173				124	420	52,000	11.8	56.2	27.5	24.61
5724		8,093	8,800	10,400		24,000	107	337	36,000	6.34	56.1	23.6	18.8
6016		5,733	6,240				110	248	27,200	7.16	59.99	22.3	15.62
6527		8,600	10,984				147	540	79,000	25.9	65	32.8	27.4
7133		10,800	11,600				149	683	102,000		70.5	33.2	32
7228		5,960	6,480	7,780	11,850		137	368	50,300	14.8	72.4	27.9	19
8020		4,673	5,080				184	392	72,300	30.8	80	38.1	19.8
9928		6,227	6,773				274	738	202,000	156	100.3	59.4	27.5

EC Cores

	A_L nH/T² (nominal)
Part #	R 2300µ	P 2500µ	F 3000µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
3517	2,213	2,400	3,000	77.4	84.3	6,530	0.83	34.5	17.3	9.5
4119	3,473	3,200	3,700	89.3	121	10,800	1.67	40.6	19.5	11.6
5224	3,867	4,200	5,040	105	180	18,800	3.87	52.2	24.2	13.4
7035		4,800	5,760	144	279	40,100	13.4	70	34.50	16.4

EER Cores

	A_L nH/T² (nominal)
Part #	R 2300µ	P 2500µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
2814	2,700		64	81.4	5,260	0.89	28.55	14	11.4
2817	2,500		75.5	81.4	6,142	0.912	28.55	16.7	11.4
3521	2,693	2,960	90.8	107	9,710	1.91	35	20.7	11.4
4013	3,300	3,520	98	149	14,600	3.18	40	22.40	13.4
4216	3,840	4,173	98.7	175	17,300	3.55	42.1	21.6	14.7
4818	6,400	6,850	86	232	19,900	4.08	48	18	17.6
4821	5,700	7,059	100	255	25,500	5.84	48	21.2	21
5418	6,100	6,500	91.8	250	23,000	4.75	53.5	18.3	17.95

EFD Cores

	A_L nH/T² (nominal)
Part #	L 900µ	R 2300µ	P 2500µ	J 5000µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
1009	280	585			23.7	7.2	171	0.004	10.5	5.2	2.7
1212	380	760			28.5	11.4	325	0.01	12.5	6.2	3.5
1515	400	893	973	1,933	34	15	510	0.02	15	7.5	4.65
2019		1,300	1,633		47	31	1,460	0.093	20	10.0	6.65
2523		2,093	2,280	4,507	57	58	3,300	0.23	25	12.5	9.1
3030		2,200	2,695		68	69	4,700	0.36	30	15	9.1

ETD Cores

	A_L nH/T² (nominal)
Part #	R 2300µ	P 2500µ	L_e Path Length mm	A_e Cross Section mm2	V_e Volume mm3	WaAc cm4	Length mm	Leg Length mm	Height mm
2929	2,250	2,843	72	76	5,470	0.73	30.6	15.8	9.8
3434	2,707	2,933	78.6	97.1	7,640	1.21	35	17.3	11.1
3939	2,973	3,227	92.2	125	11,500	2.21	40	19.8	12.8
4444	3,667	4,000	103	173	17,800	3.75	45	22.3	15.2
4949	4,093	4,440	114	211	24,000	5.83	49.8	24.7	16.7
5454	5,200	6,281	127	280	35,500	9.45	54.5	27.6	18.9
5959	5,747	6,240	139	368	51,500	13.7	59.8	31	21.65

U Cores

	A_L nH/T² (nominal)
Part #	R 2300µ	P 2500µ	F 3000µ	J 5000µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
1106 UC		1,120	1,010	1,773	29.2	12	350	0.02	10.85	4.19	6.3
1106 IC		1,022	1,150		24.6	11.5	283	0.01	10.8	1.83	6.3
2220 UC		1,360			95.8	39.7	4,130	0.91	22.1	20.6	6.27
2512 UC	1,907			4,400	68.9	80	4,170	0.67	25.4	12.9	12.7
2515 UC	1,107	1,333	1,600	2,507	83.4	40.4	3,370	0.63	25.4	15.9	6.35
2516 IC		2,907		2,907	64.3	40.3	2,590	0.32	25.4	6.35	6.35
2530 UC		2,280	2,740	4,860	83.4	80.8	6,740	1.27	25.4	15.9	12.7
4119 UC	1,627				121.2	91.1	11,000	2.86	41.78	20.9	11.94
4121 UC		2,047			115.2	114.3	13,172	3.09	41.78	20.6	11.94
4125 UC		1,747			134.4	113.1	15,196	4.44	41.78	25.4	11.94
4130 UC	1,400	1,520	1,830		154.8	112.1	17,346	5.88	41.78	30.5	11.94
9316 UC		5,191			258	447	115,000	86	93	76	16
9330 UC		7,219			354	840	297,000		93	76	30
9332 UC		7,700			353	905	319,000		93	76	32
9920 UC		3,572			480	560	268,800	221	126	91	20
9925 UC	4,533	4,920			308	645	199,000	975	101.6	57.1	25.4
9925 IC	5,707	6,200	7,440		245	645	158,000	324	101.6	25.4	25.4

UR Cores

	A_L nH/T² (nominal)
Part #	P 2500µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm⁴	Length mm	Leg Length mm	Height mm
5716	3,061	163	171	27,900	9.6	57.65	28.6	15.9
5917	3,274	189	210	39,700	15.5	59.34	35.8	17
6420	4,098	210	290	61,000	22	64	40.5	24

Planar E Cores

	A_L nH/T² (nominal)
Part #	L 900µ	R 2300µ	P 2500µ	F 3000µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm ⁴	Length mm	Leg Length mm	Height mm
0 1425 EC		1,653			16.7	14.7	244	0.009	14	5	2.5
C 1434 EC	600	1,327	1,399		20.7	14.66	304	0.01	14	5	3.5
C 1434 IC	780	1,504			16.4	11.4	230	0.009	14	5	1.8
C 1805 EC	1500	3,244	3,430		24.2	40.1	972	0.06	18	10	4.0
C 1805 IC	1800	3,606			20.3	39.5	830	0.03	18	10	2.4
F 1805 EC		3,244	3,430		24.2	40.1	972	0.06	18	10	4
F 1805 IC		3,641	3,837		20.3	40.1	813	0.03	18	10	2.39
0 2107 EC		3,448			25.7	37.1	960	0.05	21.8	7.8	3.91
C 2216 EC	2,300	5,066	5,387	6,131	32.3	76	2,451	0.24	21.8	15.8	5.7
C 2216 IC	2,900	5,956	6,506		26.1	80.4	2,100	0.12	21.8	15.8	2.9
F 2216 EC		5,066	5,387	6,131	32.5	78.5	2,550	0.24	21.8	15.8	5.72
F 2216 IC		6,207	6,568		25.8	80.6	2,080	0.12	21.8	15.8	2.95
C 3208 EC		6,521	6,918		41.4	130	5,380	0.24	31.75	20.32	6.35
C 3208 IC		7,321	7,745		35.1	130	4,560	0.12	31.75	20.32	3.18
F 3208 EC	3,200	6,700	6,918		41.4	130	5,380	0.66	31.75	20.32	6.35
F 3208 IC		7,321	7,745		35.1	130	4,560	0.33	31.75	20.32	3.18
0 3618 EC		6,678	7,090	8,039	42.4	135	5,750	0.55	35.56	17.8	6.35
F 3808 EC		7,867			52.4	194	10,200	1.56	38.1	25.4	8.26
F 3808 IC		9,028			43.7	194	8,460	0.78	38.1	25.4	3.81
0 4008 EC		4,233	4,504		51.9	101	5,220	0.66	40.65	10.7	8.51
0 4308 EC		8,560	9,150		57.5	227	13,100	2.18	43.2	27.9	8.51
F 4310 EC		8,266	8,803		61.1	229	18,900	2.68	43.2	27.9	9.53
F 4310 IC		10,631	10,130		50.4	229	11,500	1.34	43.2	27.9	4.1
C 5810 EC		8,498	9,073		80.6	308	24,600	8.36	58.42	38.1	10.54
C 5810 IC		9,821			67.7	310	20,800	4.18	58.42	38.1	4.1
F 5810 EC		8,498			80.6	308	24,600	8.36	58.42	38.1	10.54
F 5810 IC		9,970			67.7	310	20,800	4.18	58.42	38.1	4.1
C 6410 EC		14,618			80.2	516	41,400	10.4	64	50.8	10.2
C 6410 IC		16,139			64.9	511	35,539	5.2	64	50.8	5.08
F 6410 EC		16,154	15,599		80.2	516	41,400	10.4	64	50.8	10.2
F 6410 IC		18,098			64.9	511	35,539	5.2	64	50.8	5.08
0 9938 EC		9,810	9,997		148	540	79,800	46	102	37.5	20.3

ER Cores

	A_L nH/T² (nominal)
Part #	L 900µ	R 2300µ	P 2500µ	L_e Path Length mm	A_e Cross Section mm²	V_e Volume mm³	WaAc cm4	Length mm	Leg Length mm	Height mm
0906	525	973	1,053	14.2	8.47	120	0.00237	9.5	2.45	5
1126	725	1,400	1,690	14.7	11.9	174	0.00333	11	2.45	6
1308		1,700	1,800	17.5	19.9	348	0.01859	12.8	2.85	8.7
1426	850	1,600	1,700	19	17.6	333	0.00898	14.7	2.95	6.8
1826	1,300	2,623	2,770	22.1	30.2	667	0.0453	18	3.15	9.7
2014		3,788	4,026	33.2	59	1,960	0.1014	20	6.8	14
2313	1,850	3,800	4,030	26.6	50.2	1,340	0.0979	23.2	3.6	12.5
2517		7,021	7,447	26.4	89.7	2,370	0.2845	25	5.6	18
2521		5,440	5,801	41.4	100	4,145	0.52	25	8	18
3021		5,465	5,841	46	108	4,970	0.7931	30	8	20
3225		6,950	7,350	38.2	141	5,400	0.5436	32.1	6	25.4

Each Magnetics part has a unique ordering code that identifies material, shape, size and finish. Below is an overview of the ordering code for ferrite shapes.

RoHS Compliant Reach Compliant SGS Compliant