Ferrite Cores

Compare the current Ferrite Cores Magnetics - Transformer, Inductor Components selection by manufacturer, stock status, datasheet and technical parameters. Use these details to narrow the list to parts that match your design, maintenance or purchasing requirements.

For a specific MPN, package, electrical rating or quantity requirement, send the details to EGOO. We can help confirm availability, quotation and alternative sourcing options.

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
C055375A2 MPP 300 PERM GREY 380 SIZE Magnetics, a division of Spang & Co.	4,677	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.710" (18.03mm)	214 nH	±8%	Ungapped	-	300	-	41.4	23.2	-	960.0	Coated	0.280" (7.11mm)	-	-
0077725A7 KOOL MU 125 PERM BLACK 725 SIZE Magnetics, a division of Spang & Co.	3,153	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.990" (50.55mm)	366 nH	±8%	Ungapped	-	125	-	114.0	262.0	-	29700.0	Uncoated	0.820" (20.83mm)	-	-
0077733A7 KOOL MU 040 PERM BLACK 725 SIZE Magnetics, a division of Spang & Co.	4,733	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.990" (50.55mm)	117 nH	±8%	Ungapped	-	40	-	114.0	262.0	-	29700.0	Uncoated	0.820" (20.83mm)	-	-
0077729A7 KOOL MU 075 PERM BLACK 725 SIZE Magnetics, a division of Spang & Co.	1,209	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.990" (50.55mm)	219 nH	±8%	Ungapped	-	75	-	114.0	262.0	-	29700.0	Uncoated	0.820" (20.83mm)	-	-
0077727A7 KOOL MU 026 PERM BLACK 725 SIZE Magnetics, a division of Spang & Co.	2,844	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.990" (50.55mm)	76 nH	±8%	Ungapped	-	26	-	114.0	262.0	-	29700.0	Uncoated	0.820" (20.83mm)	-	-
0077730A7 KOOL MU 090 PERM BLACK 725 SIZE Magnetics, a division of Spang & Co.	1,596	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.990" (50.55mm)	263 nH	±8%	Ungapped	-	90	-	114.0	262.0	-	29700.0	Uncoated	0.820" (20.83mm)	-	-
ERH4013E026L224 HIGH FLUX 026 PERM EER 4013 SIZE Magnetics, a division of Spang & Co.	3,879	-	RFQ	Datasheet	-	Bulk	Active	EER	-	High Flux	-	59 nH	-	Ungapped	-	26	-	111.3	149.1	-	16600.0	Uncoated	0.882" (22.40mm)	1.575" (40.00mm)	0.524" (13.30mm)
ERH4013E040L224 HIGH FLUX 040 PERM EER 4013 SIZE Magnetics, a division of Spang & Co.	3,100	-	RFQ	Datasheet	-	Bulk	Active	EER	-	High Flux	-	81 nH	±8%	Ungapped	-	40	-	111.3	149.1	-	16600.0	Uncoated	0.882" (22.40mm)	1.575" (40.00mm)	0.524" (13.30mm)
ERH4013E060L224 HIGH FLUX 060 PERM EER 4013 SIZE Magnetics, a division of Spang & Co.	2,864	-	RFQ	Datasheet	-	Bulk	Active	EER	-	High Flux	-	111 nH	±8%	Ungapped	-	60	-	111.3	149.1	-	16600.0	Uncoated	0.882" (22.40mm)	1.575" (40.00mm)	0.524" (13.30mm)
0J47313TC TOROID UNCOATED Magnetics, a division of Spang & Co.	3,510	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	J	2.902" (73.70mm)	8.14 µH	±20%	Ungapped	-	5000	-	165.0	210.0	-	34771.0	Uncoated	0.492" (12.50mm)	-	-

Ferrite Cores FAQ

How can I narrow the current Ferrite Cores selection?

Use the available manufacturer and technical filters to compare matching parts by specifications, stock status, pricing and datasheet information.

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

Yes. Send the manufacturer part number and required quantity to our sourcing team for availability, lead-time and alternative sourcing support.

Can I request a quotation for a BOM or small-batch requirement?

Yes. EGOO supports BOM sourcing, prototype quantities and small-batch purchasing. Provide your part list and quantities for a quotation review.

What information should I provide when requesting a quote?

Please provide the target part number, manufacturer, quantity and any required date code, package or delivery requirements so our team can respond more accurately.