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
RJ41812UG R-RM DESIGN Magnetics, a division of Spang & Co.	4,453	-	RFQ	Datasheet	-	Bulk	Active	RM	-	J	-	5.973 µH	-	Ungapped	-	5000	-	25.6	32.0	22.6	819.0	Uncoated	0.244" (6.20mm)	0.701" (17.90mm)	0.291" (7.40mm)
EQK4128E060L199 KOOL MU 060 PERM EQ 4128 SIZE Magnetics, a division of Spang & Co.	2,327	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	Kool Mu	-	140 nH	±8%	Ungapped	-	60	-	115.0	200.0	-	23000.0	Uncoated	0.783" (19.90mm)	1.634" (41.50mm)	1.102" (28.00mm)
EQK4128E026L199 KOOL MU 026 PERM EQ 4128 SIZE Magnetics, a division of Spang & Co.	1,274	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	Kool Mu	-	68 nH	±8%	Ungapped	-	26	-	115.0	200.0	-	23000.0	Uncoated	0.783" (19.90mm)	1.634" (41.50mm)	1.102" (28.00mm)
0E40704UG POT CORE Magnetics, a division of Spang & Co.	2,391	-	RFQ	Datasheet	-	Bulk	Active	P	-	E	0.285" (7.24mm)	900 nH	±25%	Ungapped	-	2000	-	9.9	7.0	5.9	69.0	Uncoated	0.082" (2.08mm)	-	-
0077555A7 KOOL MU 040 PERM BLACK 548 SIZE Magnetics, a division of Spang & Co.	4,557	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.291" (32.80mm)	41 nH	±8%	Ungapped	-	40	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0077552A7 KOOL MU 090 PERM BLACK 548 SIZE Magnetics, a division of Spang & Co.	4,127	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.291" (32.80mm)	91 nH	±8%	Ungapped	-	90	-	81.4	65.6	-	5340.0	Uncoated	0.420" (10.67mm)	-	-
0076352A7 KOOL MU HF 026 PERM BLACK 350 SI Magnetics, a division of Spang & Co.	1,964	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu HF	0.928" (23.57mm)	22 nH	±8%	Ungapped	-	26	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
00K4110U060 KOOL MU 4110 U CORE Magnetics, a division of Spang & Co.	4,439	-	RFQ	Datasheet	-	Bulk	Active	U	-	Kool Mu	-	78 nH	±8%	Ungapped	-	60	-	85.2	80.0	-	6820.0	Uncoated	0.440" (11.18mm)	1.600" (40.64mm)	0.375" (9.53mm)
0079357A7 KOOL MU MAX 019 PERM BLACK 350 S Magnetics, a division of Spang & Co.	3,303	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.928" (23.57mm)	16 nH	±8%	Ungapped	-	19	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
0079356A7 KOOL MU MAX 040 PERM BLACK 350 S Magnetics, a division of Spang & Co.	2,199	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.928" (23.57mm)	34 nH	±8%	Ungapped	-	40	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-

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.

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