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
0077778A7 KOOL MU 125 PERM BLACK 778 SIZE Magnetics, a division of Spang & Co.	1,909	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	3.063" (77.80mm)	425 nH	±8%	Ungapped	-	125	-	177.2	492.0	-	87100.0	Uncoated	1.018" (25.86mm)	-	-
0077775A7 KOOL MU 026 PERM BLACK 778 SIZE Magnetics, a division of Spang & Co.	3,925	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	3.063" (77.80mm)	88 nH	±8%	Ungapped	-	26	-	177.2	492.0	-	87100.0	Uncoated	1.018" (25.86mm)	-	-
0077776A7 KOOL MU 040 PERM BLACK 778 SIZE Magnetics, a division of Spang & Co.	4,900	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	3.063" (77.80mm)	135 nH	±8%	Ungapped	-	40	-	177.2	492.0	-	87100.0	Uncoated	1.018" (25.86mm)	-	-
0077774A7 KOOL MU 014 PERM BLACK 778 SIZE Magnetics, a division of Spang & Co.	3,725	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	3.063" (77.80mm)	47 nH	±8%	Ungapped	-	14	-	177.2	492.0	-	87100.0	Uncoated	1.018" (25.86mm)	-	-
0078612A7 X FLUX 019 PERM BROWN 620 SIZE Magnetics, a division of Spang & Co.	2,447	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	XFlux	2.440" (61.98mm)	60 nH	±8%	Ungapped	-	19	-	144.0	360.0	-	51800.0	Uncoated	0.984" (25.00mm)	-	-
0078618A7 X FLUX 075 PERM BROWN 620 SIZE Magnetics, a division of Spang & Co.	2,463	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	XFlux	2.440" (61.98mm)	237 nH	±8%	Ungapped	-	75	-	144.0	360.0	-	51800.0	Uncoated	0.984" (25.00mm)	-	-
0078619A7 X FLUX 090 PERM BROWN 620 SIZE Magnetics, a division of Spang & Co.	3,975	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	XFlux	2.440" (61.98mm)	284 nH	±8%	Ungapped	-	90	-	144.0	360.0	-	51800.0	Uncoated	0.984" (25.00mm)	-	-
0058327A2 HIGH FLUX 014 PERM KHAKI 324 SIZ Magnetics, a division of Spang & Co.	4,513	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	1.410" (35.81mm)	13 nH	±8%	Ungapped	-	14	-	89.8	67.8	-	6090.0	Uncoated	0.412" (10.46mm)	-	-
0077616A7HT35 KOOL MU 040 PERM BLACK 620 SIZE Magnetics, a division of Spang & Co.	4,796	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	2.440" (61.98mm)	172 nH	±8%	Ungapped	-	40	-	144.0	490.0	-	70000.0	Uncoated	1.342" (34.09mm)	-	-
C055324A2 MPP 125 PERM GREY 324 SIZE Magnetics, a division of Spang & Co.	3,598	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	1.445" (36.70mm)	117 nH	±8%	Ungapped	-	125	-	89.8	67.8	-	6090.0	Coated	0.447" (11.35mm)	-	-

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.