Ferrite Cores

Browse available Ferrite Cores components by manufacturer and part number. Review stock status, datasheets and key technical parameters to compare suitable options for design, maintenance, replacement or purchasing.

If you already have a target MPN or BOM, send it to EGOO with the required quantity. Our sourcing team can check availability, lead time and quotation options, including hard-to-find and obsolete parts.

Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Packaging	Product Status	Core Type	Supplier Device Package	Material	Diameter	Inductance Factor (Al)	Tolerance	Gap	Effective Permeability (µe)	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
0R40906EC ER CORE Magnetics, a division of Spang & Co.	3,124	-	RFQ	Datasheet	-	Bulk	Active	ER	-	R	-	973 nH	-	Ungapped	-	2300	-	14.2	8.47	7.6	120.0	Uncoated	0.096" (2.45mm)	0.374" (9.50mm)	0.197" (5.00mm)
0R41003TC TOROID UNCOATED Magnetics, a division of Spang & Co.	2,950	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	R	0.375" (9.53mm)	1 µH	±25%	Ungapped	-	-	-	20.7	7.3	-	151.0	Uncoated	0.125" (3.18mm)	-	-
YW40601TC TOROID-PARYLENE COATED Magnetics, a division of Spang & Co.	4,380	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	W	0.244" (6.20mm)	1.96 µH	±30%	Ungapped	-	10000	-	13.0	2.0	-	26.7	Parylene	0.070" (1.78mm)	-	-
ROD3/15-4B1-D FERRITE CORE ROD Ferroxcube	4,052	-	RFQ	Datasheet	-	Bulk	Active	ROD	ROD 3 x 15	-	0.118" (3.00mm)	-	-	-	-	-	-	-	-	-	-	Uncoated	-	0.591" (15.00mm)	-
36T0250-10P FERRITE CORE TOROID 1.46UH 36 Laird-Signal Integrity Products	2,120	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	36	0.251" (6.38mm)	1.46 µH	-0.25%	Ungapped	-	4500	3.75	15.25	4.07	-	-	Parylene	0.126" (3.20mm)	-	-
TC4/2.2/1.6-3E27 Ferrite Misc Ferroxcube	1,443	-	RFQ	Datasheet	-	Bulk	Active	Toroid	Toroid 4 x 2.2 x 1.6	3E27	0.163" (4.15mm)	1.05 µH	±25%	Ungapped	5500.0	-	6.56	9.18	1.4	-	12.9	Parylene	0.067" (1.70mm)	-	-
HFN0277-200 FERRITE CORE 2 HOLE HF Laird-Signal Integrity Products	3,856	-	RFQ	Datasheet	-	Bulk	Active	Multi-Hole (2)	-	HF	-	-	-	Ungapped	-	100	-	-	-	-	-	Uncoated	0.122" (3.10mm)	0.277" (7.04mm)	0.160" (4.06mm)
0R41308EC ER CORE Magnetics, a division of Spang & Co.	1,953	-	RFQ	Datasheet	-	Bulk	Active	ER	-	R	-	1.7 µH	-	Ungapped	-	2300	-	17.5	19.9	19.2	348.0	Uncoated	0.112" (2.85mm)	0.504" (12.80mm)	0.343" (8.70mm)
YF40601TC TOROID-PARYLENE COATED Magnetics, a division of Spang & Co.	1,198	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	F	0.244" (6.20mm)	585 nH	±20%	Ungapped	-	3000	-	13.0	2.0	-	26.7	Parylene	0.070" (1.78mm)	-	-
28T0121-20P FERRITE CORE TOROID 244NH 28 Laird-Signal Integrity Products	3,132	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	28	0.121" (3.07mm)	244 nH	±20%	Ungapped	-	850	4.41	6.64	1.51	-	-	Parylene	0.082" (2.08mm)	-	-
37T0231-10P FERRITE CORE TOROID 2.974UH 37 Laird-Signal Integrity Products	3,066	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	37	0.231" (5.87mm)	2.974 µH	±30%	Ungapped	-	5500	3.08	12.99	4.22	-	-	Parylene	0.121" (3.07mm)	-	-
ROD5/25-3C90-D FERRITE CORE ROD 3C90 Ferroxcube	4,932	-	RFQ	Datasheet	-	Bulk	Active	ROD	ROD 5 x 25	3C90	0.197" (5.00mm)	-	-	-	-	-	-	-	-	-	-	Uncoated	-	0.984" (25.00mm)	-
TC4/2.2/1.6-3E6 Ferrite Misc Ferroxcube	2,464	-	RFQ	Datasheet	-	Bulk	Active	Toroid	Toroid 4 x 2.2 x 1.6	3E6	0.157" (4.00mm)	1.915 µH	±30%	Ungapped	-	10000	6.56	9.18	1.4	-	12.9	Parylene	0.063" (1.60mm)	-	-
B64290A0036X830 R4/2.4/1.6 N30 RINGKERN EPCOS - TDK Electronics	4,527	-	RFQ	Datasheet	-	Tray	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
B64290A0038X087 R10/6/4 N87 RINGKERN EPCOS - TDK Electronics	2,240	-	RFQ	Datasheet	-	Tray	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
YF40502TC TOROID-PARYLENE COATED Magnetics, a division of Spang & Co.	4,619	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	F	0.166" (4.22mm)	440 nH	±20%	Ungapped	-	3000	-	9.2	1.05	-	9.7	Parylene	0.060" (1.52mm)	-	-
ROD5/20-3C90-D FERRITE CORE ROD 3C90 Ferroxcube	3,378	-	RFQ	Datasheet	-	Bulk	Active	ROD	ROD 5 x 20	3C90	0.197" (5.00mm)	-	-	-	-	-	-	-	-	-	-	Uncoated	-	0.787" (20.00mm)	-
B64290A0692X065 R4/2.4/1.8 T65 RINGKERN EPCOS - TDK Electronics	2,031	-	RFQ	Datasheet	-	Tray	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
MHB2-3.6/2.1/3-4B1 Ferrite Misc Ferroxcube	3,023	-	RFQ	Datasheet	-	Bulk	Active	Multi-Hole (2)	-	4B1	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.142" (3.60mm)	0.118" (3.00mm)	0.083" (2.10mm)
MHB2-3.6/2.1/3-4A11 Ferrite Misc Ferroxcube	4,024	-	RFQ	Datasheet	-	Bulk	Active	Multi-Hole (2)	-	4A11	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.142" (3.60mm)	0.118" (3.00mm)	0.083" (2.10mm)

Ferrite Cores FAQ

What Ferrite Cores components can I source from EGOO?

You can browse available Ferrite Cores product families, manufacturers and part numbers on this page, then review stock, datasheets and technical information for suitable options.

Can EGOO help with hard-to-source or obsolete Ferrite Cores parts?

Yes. EGOO provides sourcing support for shortage, obsolete and hard-to-find electronic components. Send us the target manufacturer part number and quantity for checking.

Does EGOO support BOM and small-batch sourcing?

Yes. We support BOM sourcing, prototype requirements and small-batch supply, together with stock, lead-time and quotation assistance.

How do I request pricing and availability?

Submit the manufacturer part number, required quantity and any package, date-code or delivery requirements through the RFQ form, and our team will review available sourcing options.