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
0077930A7HT15 KOOL MU 125 PERM BLACK 930 SIZE Magnetics, a division of Spang & Co.	4,223	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.060" (26.92mm)	197 nH	±8%	Ungapped	-	125	-	63.5	82.1	-	5210.0	Uncoated	0.551" (14.00mm)	-	-
0077589A7 KOOL MU 090 PERM BLACK 585 SIZE Magnetics, a division of Spang & Co.	4,744	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.350" (34.29mm)	57 nH	±8%	Ungapped	-	90	-	89.5	46.4	-	4150.0	Uncoated	0.350" (8.90mm)	-	-
0077585A7 KOOL MU 125 PERM BLACK 585 SIZE Magnetics, a division of Spang & Co.	2,053	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.350" (34.29mm)	79 nH	±8%	Ungapped	-	125	-	89.5	46.4	-	4150.0	Uncoated	0.350" (8.90mm)	-	-
EQK4128E040L120 KOOL MU 040 PERM EQ 4128 SIZE Magnetics, a division of Spang & Co.	3,034	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	Kool Mµ	-	138 nH	±8%	Ungapped	-	40	-	83.6	200.0	-	16700.0	Uncoated	0.472" (12.00mm)	1.634" (41.50mm)	1.102" (28.00mm)
0077586A7 KOOL MU 060 PERM BLACK 585 SIZE Magnetics, a division of Spang & Co.	4,010	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	1.350" (34.29mm)	38 nH	±8%	Ungapped	-	60	-	89.5	46.4	-	4150.0	Uncoated	0.350" (8.90mm)	-	-
EQK4128E060L120 KOOL MU 060 PERM EQ 4128 SIZE Magnetics, a division of Spang & Co.	1,950	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	Kool Mu	-	193 nH	±8%	Ungapped	-	60	-	83.6	200.0	-	16700.0	Uncoated	0.472" (12.00mm)	1.634" (41.50mm)	1.102" (28.00mm)
RJ42316UG R-RM DESIGN Magnetics, a division of Spang & Co.	4,718	-	RFQ	Datasheet	-	Bulk	Active	RM	-	J	-	6.96 µH	-	Ungapped	-	5000	-	35.5	52.0	36.9	1850.0	Uncoated	0.323" (8.20mm)	0.913" (23.20mm)	0.425" (10.80mm)
C055131A2 MPP 060 PERM GREY 130 SIZE Magnetics, a division of Spang & Co.	2,340	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.465" (11.81mm)	26 nH	±8%	Ungapped	-	60	-	26.9	9.06	-	244.0	Coated	0.181" (4.60mm)	-	-
EQX3222E060L180 X FLUX 060 PERM EQ 3222 SIZE Magnetics, a division of Spang & Co.	2,432	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	XFlux	-	136 nH	±8%	Ungapped	-	60	-	91.1	152.0	-	13900.0	Uncoated	0.709" (18.00mm)	1.260" (32.00mm)	0.866" (22.00mm)
0R42616UG POT CORE Magnetics, a division of Spang & Co.	4,142	-	RFQ	Datasheet	-	Bulk	Active	P	-	R	1.004" (25.50mm)	5.213 µH	-	Ungapped	-	2300	-	37.6	93.9	77.4	3530.0	Uncoated	0.317" (8.05mm)	-	-

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.