Ferrite Cores

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Core Type	Supplier Device Package	Material	Diameter	Inductance Factor (Al)	Tolerance	Gap	Initial Permeability (µi)	Core Factor (ΣI/A) mm⁻¹	Effective Length (le) mm	Effective Area (Ae) mm²	Effective Magnetic Volume (Ve) mm³	Finish	Height	Length	Width

B64290L0045X038 FERRITE CORE TOROID 6.44UH T38 EPCOS - TDK Electronics	28,108 In Stock	1 : ¥8.16000 Bulk	TX16/9.6/6.3	Bulk	Active	Toroid	-	T38	0.677" (17.20mm)	6.44 µH	±30%	Ungapped	10000	1.95	38.52	19.73	760.0	Epoxy	0.287" (7.30mm)	-	-
T60004L2016W620 FERRITE CORE TOROID 15UH VACUUMSCHMELZE	28,620 In Stock	1 : ¥11.22000 Box	-	Box	Active	Toroid	-	-	0.701" (17.90mm)	15 µH	-	Ungapped	-	-	44.8	8.0	-	Epoxy	0.315" (8.00mm)	-	-
0077130A7 FERRITE CORE TOROID 53NH KOOL MU Magnetics, a division of Spang & Co.	5,047 In Stock	1 : ¥4.59000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu	0.465" (11.81mm)	53 nH	±12%	Ungapped	125	-	26.9	9.06	244.0	Coated	0.181" (4.60mm)	-	-
5943000321 FERRITE CORE TOROID 440NH 43 Fair-Rite Products Corp.	1,301 In Stock	1 : ¥5.02000 Box	-	Box	Active	Toroid	-	43	0.530" (13.45mm)	440 nH	-25%, +20%	Ungapped	800	2.2904	29.5	12.9	381.0	Plastic	0.213" (5.40mm)	-	-
0077040A7 FERRITE CORE TOROID 66NH KOOL MU Magnetics, a division of Spang & Co.	13,668 In Stock	1 : ¥6.21000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu	0.425" (10.80mm)	66 nH	±12%	Ungapped	125	-	23.0	9.57	220.0	Coated	0.181" (4.60mm)	-	-
0076052A7 FERRITE CORE TOROID 12NH KOOL MU Magnetics, a division of Spang & Co.	4,820 In Stock	1 : ¥8.76000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	0.530" (13.45mm)	12 nH	±8%	Ungapped	26	-	31.2	10.9	340.0	Coated	0.217" (5.51mm)	-	-
0059050A2 FERRITE CORE TOROID 56NH EDGE Magnetics, a division of Spang & Co.	4,568 In Stock	1 : ¥16.92000 Bulk	-	Bulk	Active	Toroid	-	Edge	0.500" (12.70mm)	56 nH	±8%	Ungapped	125	-	31.2	10.9	340.0	Coated	0.187" (4.75mm)	-	-
0070051A7 KOOL MU ULTRA 060 PERM BLACK Magnetics, a division of Spang & Co.	488 In Stock	1 : ¥18.19000 Bag	-	Bag	Active	Toroid	-	Kool Mµ	0.500" (12.70mm)	26 nH	±8%	Ungapped	60	-	31.2	10.9	340.0	Uncoated	0.187" (4.75mm)	-	-
C055120A2 FERRITE CORE TOROID 72NH MPP Magnetics, a division of Spang & Co.	801 In Stock	1 : ¥27.63000 Bulk	-	Bulk	Active	Toroid	-	MPP	0.653" (16.59mm)	72 nH	±8%	Ungapped	125	-	41.2	19.2	791.0	Coated	0.250" (6.35mm)	-	-
CMC020012008H NANOCRYSTAL CORE TOROID 61.5UH Magnetics, a division of Spang & Co.	386 In Stock	1 : ¥32.73000 Bulk	-	Bulk	Active	Toroid	-	Nanocrystalline	0.787" (20.00mm)	61.5 µH	±30%	Ungapped	80000	-	50.2	26.9	-	Polyester	0.315" (8.00mm)	-	-
0076076A7 FERRITE CORE TOROID 56NH KOOL MU Magnetics, a division of Spang & Co.	534 In Stock	1 : ¥41.06000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	1.445" (36.70mm)	56 nH	±8%	Ungapped	60	-	89.8	67.8	6090.0	Coated	0.447" (11.35mm)	-	-
0076083A7 FERRITE CORE TOROID 81NH KOOL MU Magnetics, a division of Spang & Co.	126 In Stock	1 : ¥66.31000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	1.605" (40.77mm)	81 nH	±8%	Ungapped	60	-	98.4	107.0	10600.0	Coated	0.605" (15.37mm)	-	-
0077121A7 KOOL MU 060 PERM BLACK 120 SIZE Magnetics, a division of Spang & Co.	1,795 In Stock	1 : ¥8.93000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu	0.653" (16.59mm)	35 nH	±8%	Ungapped	60	-	41.2	19.2	791.0	Uncoated	0.250" (6.35mm)	-	-
0076381A7 FERRITE CORE TOROID 43NH KOOL MU Magnetics, a division of Spang & Co.	1,842 In Stock	1 : ¥12.24000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	0.710" (18.03mm)	43 nH	±8%	Ungapped	60	-	41.4	23.2	960.0	Coated	0.280" (7.11mm)	-	-
0076208A7 FERRITE CORE TOROID 14NH KOOL MU Magnetics, a division of Spang & Co.	1,511 In Stock	1 : ¥14.20000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	0.830" (21.08mm)	14 nH	±8%	Ungapped	26	-	50.9	22.1	1120.0	Coated	0.280" (7.11mm)	-	-
0076848A7 FERRITE CORE TOROID 32NH KOOL MU Magnetics, a division of Spang & Co.	1,505 In Stock	1 : ¥20.15000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	0.830" (21.08mm)	32 nH	±8%	Ungapped	60	-	50.9	22.1	1120.0	Coated	0.280" (7.11mm)	-	-
0076312A7 FERRITE CORE TOROID 19NH KOOL MU Magnetics, a division of Spang & Co.	939 In Stock	1 : ¥20.15000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	0.900" (22.86mm)	19 nH	-	Ungapped	26	-	56.7	31.7	1800.0	Coated	0.300" (7.60mm)	-	-
0055292A2 MPP 026 PERM GREY 290 SIZE Magnetics, a division of Spang & Co.	1,855 In Stock	1 : ¥37.32000 Bulk	-	Bulk	Active	Toroid	-	MPP	0.380" (9.65mm)	14 nH	±8%	Ungapped	26	-	21.8	9.45	206.0	Uncoated	0.156" (3.96mm)	-	-
0076256A7 FERRITE CORE TOROID 35NH KOOL MU Magnetics, a division of Spang & Co.	306 In Stock	1 : ¥66.31000 Bulk	-	Bulk	Active	Toroid	-	Kool Mu HF	1.605" (40.77mm)	35 nH	±8%	Ungapped	26	-	98.4	107.0	10600.0	Coated	0.605" (15.37mm)	-	-
B64290L0038X046 FERRITE CORE TOROID 6UH T46 EPCOS - TDK Electronics	7,687 In Stock	1 : ¥4.59000 Box	TX10/6/4	Box	Obsolete	Toroid	-	T46	0.425" (10.80mm)	6 µH	±30%	Ungapped	15000	3.07	24.07	7.83	188.0	Epoxy	0.187" (4.75mm)	-	-

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Ferrite cores are a magnetic device used in the windings of transformers or other wound components. The chemical makeup of these devices help to prevent eddy currents. These are created in different form factors such as: E, toroid, ER, multi-hole, etc. and come in many different sizes. Key parameters are going to be the size, form factor or core type, and inductance factor.