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
0079555A7 KOOL MU MAX 040 PERM BLACK 548 S Magnetics, a division of Spang & Co.	4,009	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	1.291" (32.80mm)	41 nH	±8%	Ungapped	-	40	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0079553A7 KOOL MU MAX 075 PERM BLACK 548 S Magnetics, a division of Spang & Co.	2,841	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	1.291" (32.80mm)	76 nH	±8%	Ungapped	-	75	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0076555A7 KOOL MU HF 040 PERM BLACK 548 SI Magnetics, a division of Spang & Co.	1,179	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	1.291" (32.80mm)	41 nH	±8%	Ungapped	-	40	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0079552A7 KOOL MU MAX 090 PERM BLACK 548 S Magnetics, a division of Spang & Co.	4,371	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	1.291" (32.80mm)	91 nH	±8%	Ungapped	-	90	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0055133A2 MPP 014 PERM GREY 130 SIZE Magnetics, a division of Spang & Co.	1,318	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.440" (11.18mm)	6 nH	±8%	Ungapped	-	14	-	26.9	9.06	-	244.0	Uncoated	0.156" (3.96mm)	-	-
0076550A7 KOOL MU HF 026 PERM BLACK 548 SI Magnetics, a division of Spang & Co.	4,479	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu HF	1.291" (32.80mm)	28 nH	±8%	Ungapped	-	26	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0055293A2 MPP 014 PERM GREY 290 SIZE Magnetics, a division of Spang & Co.	1,442	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.380" (9.65mm)	7 nH	±8%	Ungapped	-	14	-	21.8	9.45	-	206.0	Uncoated	0.156" (3.96mm)	-	-
0079550A7 KOOL MU MAX 026 PERM BLACK 548 S Magnetics, a division of Spang & Co.	4,771	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	1.291" (32.80mm)	28 nH	±8%	Ungapped	-	26	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0055283A2 MPP 014 PERM GREY 280 SIZE Magnetics, a division of Spang & Co.	2,532	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.380" (9.65mm)	6 nH	±8%	Ungapped	-	14	-	21.8	7.52	-	164.0	Uncoated	0.125" (3.18mm)	-	-
0079551A7 KOOL MU MAX 014 PERM BLACK 548 S Magnetics, a division of Spang & Co.	1,346	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	1.291" (32.80mm)	14 nH	±8%	Ungapped	-	14	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-

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.