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	Minimum Core Cross Section (Amin) mm²	Effective Magnetic Volume (Ve) mm³	Finish	Height	Length	Width
B64290L0632X027 FERRITE CORE TOROID 1.94UH N27 EPCOS - TDK Electronics	2,701 In Stock	1 : $2.15000 Box	TX20/10/7	Box	Active	Toroid	-	N27	0.835" (21.20mm)	1.94 µH	±25%	Ungapped	2000	1.3	43.55	33.63	33.63	1465.0	Epoxy	0.319" (8.10mm)	-	-
B64290L0632X830 FERRITE CORE TOROID 4.16UH N30 EPCOS - TDK Electronics	1,715 In Stock	1 : $2.45000 Bulk	TX20/10/7	Bulk	Active	Toroid	-	N30	0.835" (21.20mm)	4.16 µH	±25%	Ungapped	4300	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-
B64290L0632X087 FERRITE CORE TOROID 2.13UH N87 EPCOS - TDK Electronics	5,754 In Stock	1 : $2.93000 Box	TX20/10/7	Box	Active	Toroid	-	N87	0.835" (21.20mm)	2.13 µH	±25%	Ungapped	2200	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-
B64290L0632X038 FERRITE CORE TOROID 9.74UH T38 EPCOS - TDK Electronics	2,323 In Stock	1 : $3.09000 Box	TX20/10/7	Box	Active	Toroid	-	T38	0.835" (21.20mm)	9.74 µH	±30%	Ungapped	10000	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-
B64290L0632X035 FERRITE CORE TOROID 5UH T35 EPCOS - TDK Electronics	211 In Stock	1 : $3.59000 Bulk	TX20/10/7	Bulk	Active	Toroid	-	T35	0.835" (21.20mm)	5 µH	±25%	Ungapped	5100	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-
TX20/10/7-3C90 IC Ferroxcube	0 In Stock Check Lead Time	1,560 : $0.86833 Bulk	TX20/10/7	Bulk	Active	Toroid	TX 20 x 10 x 7	3C90	0.821" (20.85mm)	-	-	Ungapped	2300	1.3	43.6	33.6	-	-	Epoxy	0.309" (7.85mm)	-	-
TX20/10/7-3C11 IC Ferroxcube	0 In Stock Check Lead Time	1,560 : $0.86833 Bulk	TX20/10/7	Bulk	Active	Toroid	TX 20 x 10 x 7	3C11	0.821" (20.85mm)	-	-	Ungapped	4300	1.3	43.6	33.6	-	-	Epoxy	0.309" (7.85mm)	-	-
B64290L0632X072 FERRITE CORE TOROID N72 EPCOS - TDK Electronics	0 In Stock Check Lead Time	4,000 : $1.13721 Box	TX20/10/7	Box	Active	Toroid	-	N72	-	-	-	Gapped	2500	-	-	-	-	-	Epoxy	-	-	-
TX20/10/7-3E10 Ferrite Misc Ferroxcube	0 In Stock Check Lead Time	1,560 : $1.13810 Bulk	TX20/10/7	Bulk	Active	Toroid	TX 20 x 10 x 7	3E10	0.821" (20.85mm)	9.74 µH	±20%	-	10000	1.3	43.6	33.6	-	1465.0	Epoxy	0.309" (7.85mm)	-	-
B64290L0632X065 FERRITE CORE TOROID 5.05UH T65 EPCOS - TDK Electronics	0 In Stock Check Lead Time	4,000 : $1.15831 Box	TX20/10/7	Box	Active	Toroid	-	T65	0.835" (21.20mm)	5.05 µH	±30%	Ungapped	5200	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-
B64290L0632X037 FERRITE CORE TOROID 6.28UH T37 EPCOS - TDK Electronics	0 In Stock Check Lead Time	4,000 : $1.51377 Box	TX20/10/7	Box	Active	Toroid	-	T37	0.835" (21.20mm)	6.28 µH	±25%	Ungapped	6500	1.3	43.55	33.63	-	1465.0	Epoxy	0.319" (8.10mm)	-	-

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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.