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
CF139 T5818 COSMO INDIA TOROIDAL RINGS MN-Z Cosmo Ferrites Ltd.	500	-	RFQ	Datasheet	-	Bulk	Active	Toroid	TX 58 x 41 x 18	-	2.354" (59.80mm)	-	±30%	Ungapped	-	-	1.0	152.0	152.0	-	23200.0	Epoxy	0.729" (18.60mm)	-	-
50ALL 25-25-25-0000 I Bar / Block Ferrite International	3,600	-	RFQ	Datasheet	*	Bulk	Active	I	-	50ALL	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	1.000" (25.40mm)	1.000" (25.40mm)	1.000" (25.40mm)
5099 25-25-25-0000 I Bar / Block Ferrite International	3,600	-	RFQ	Datasheet	*	Bulk	Active	I	-	5099	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	1.000" (25.40mm)	1.000" (25.40mm)	1.000" (25.40mm)
7070 25-25-25-0000 I Bar / Block Ferrite International	3,600	-	RFQ	Datasheet	*	Bulk	Active	I	-	7070	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	1.000" (25.40mm)	1.000" (25.40mm)	1.000" (25.40mm)
7099 25-25-25-0000 I Bar / Block Ferrite International	3,600	-	RFQ	Datasheet	*	Bulk	Active	I	-	7099	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	1.000" (25.40mm)	1.000" (25.40mm)	1.000" (25.40mm)
N001 25-25-25-0000 I Bar / Block Ferrite International	3,600	-	RFQ	Datasheet	*	Bulk	Active	I	-	N001	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	1.000" (25.40mm)	1.000" (25.40mm)	1.000" (25.40mm)
7070 81-13-16-0000 I Bar / Mate with 81mm UR Core Ferrite International	4,320	-	RFQ	Datasheet	*	Bulk	Active	I	-	7070	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	0.500" (12.70mm)	3.197" (81.20mm)	0.622" (15.80mm)
7099 81-13-16-0000 I Bar / Mate with 81mm UR core Ferrite International	4,320	-	RFQ	Datasheet	*	Bulk	Active	I	-	7099	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	0.500" (12.70mm)	3.197" (81.20mm)	0.622" (15.80mm)
50ALL 81-13-16-0000 I Bar / Mate with 81mm UR Core Ferrite International	4,320	-	RFQ	Datasheet	*	Bulk	Active	I	-	50ALL	-	-	±25%	-	-	-	-	-	-	-	-	Uncoated	0.500" (12.70mm)	3.197" (81.20mm)	0.622" (15.80mm)
CF196 EE6527 COSMO INDIA E CORE MN-ZN Cosmo Ferrites Ltd.	500	-	RFQ	Datasheet	-	Bulk	Active	E	E 65 x 32 x 27	N27	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	1.291" (32.80mm)	2.559" (65.00mm)	1.079" (27.40mm)
50ALL 81-42-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	50ALL	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.634" (41.50mm)	3.197" (81.20mm)	0.622" (15.80mm)
7099 81-42-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	7099	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.634" (41.50mm)	3.197" (81.20mm)	0.622" (15.80mm)
7070 81-42-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	7070	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.634" (41.50mm)	3.197" (81.20mm)	0.622" (15.80mm)
CF296 ETD4917 COSMO INDIA E CORE MN-ZN Cosmo Ferrites Ltd.	500	-	RFQ	Datasheet	-	Bulk	Active	E	EER 49	PC47	-	6.25 µH	±25%	Ungapped	-	-	0.4	91.3	231.0	-	21100.0	Uncoated	0.748" (19.00mm)	1.929" (49.00mm)	0.677" (17.20mm)
50ALL 70-54-32-0000 E-Core Ferrite International	1,728	-	RFQ	Datasheet	-	Bulk	Active	E	-	50ALL	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	-	2.756" (70.00mm)	1.248" (31.70mm)
CF139 PQ4040 COSMO INDIA PQ CORE MN-ZN Cosmo Ferrites Ltd.	500	-	RFQ	Datasheet	-	Bulk	Active	PQ	PQ 40 x 40	N87	-	4.3 µH	-20%, +30%	Ungapped	-	2200	0.49	92.5	188.3	-	17430.0	Uncoated	0.783" (19.90mm)	1.594" (40.50mm)	1.102" (28.00mm)
CF249 EE6420P COSMO INDIA E CORE MN-ZN Cosmo Ferrites Ltd.	500	-	RFQ	Datasheet	-	Bulk	Active	E	E 64 x 10 x 50	3C92	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.402" (10.20mm)	2.520" (64.00mm)	2.000" (50.80mm)
7070 81-45-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	7070	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.755" (44.58mm)	3.197" (81.20mm)	0.622" (15.80mm)
50ALL 81-45-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	50ALL	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.755" (44.58mm)	3.197" (81.20mm)	0.622" (15.80mm)
7099 81-45-16-0000 UR 81 Ferrite International	1,800	-	RFQ	Datasheet	-	Bulk	Active	UR	-	7099	-	-	±25%	Ungapped	-	-	-	-	-	-	-	Uncoated	1.755" (44.58mm)	3.197" (81.20mm)	0.622" (15.80mm)

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.