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
0077352A7 KOOL MU 026 PERM BLACK 350 SIZE Magnetics, a division of Spang & Co.	2,764	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.928" (23.57mm)	22 nH	±8%	Ungapped	-	26	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
0077356A7 KOOL MU 040 PERM BLACK 350 SIZE Magnetics, a division of Spang & Co.	4,829	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.928" (23.57mm)	34 nH	±8%	Ungapped	-	40	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
0077354A7 KOOL MU 090 PERM BLACK 350 SIZE Magnetics, a division of Spang & Co.	2,853	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.928" (23.57mm)	76 nH	±8%	Ungapped	-	90	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
0R42020UG PQ-CORE Magnetics, a division of Spang & Co.	2,780	-	RFQ	Datasheet	-	Bulk	Active	PQ	-	R	-	2.947 µH	-	Ungapped	-	2300	-	45.7	62.6	59.1	2850.0	Uncoated	0.398" (10.10mm)	0.839" (21.30mm)	0.551" (14.00mm)
RP41812UG R-RM DESIGN Magnetics, a division of Spang & Co.	4,342	-	RFQ	Datasheet	-	Bulk	Active	RM	-	P	-	2.333 µH	-	Ungapped	-	2500	-	25.6	32.0	22.6	819.0	Uncoated	0.244" (6.20mm)	0.701" (17.90mm)	0.291" (7.40mm)
0077351A7 KOOL MU 060 PERM BLACK 350 SIZE Magnetics, a division of Spang & Co.	4,370	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	0.928" (23.57mm)	51 nH	±8%	Ungapped	-	60	-	58.8	38.8	-	2280.0	Uncoated	0.350" (8.90mm)	-	-
C055039A2 MPP 147 PERM GREY 040 SIZE Magnetics, a division of Spang & Co.	3,651	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.425" (10.80mm)	78 nH	±8%	Ungapped	-	147	-	23.0	9.57	-	220.0	Coated	0.181" (4.60mm)	-	-
C055038A2 MPP 160 PERM GREY 040 SIZE Magnetics, a division of Spang & Co.	3,420	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.425" (10.80mm)	84 nH	±8%	Ungapped	-	160	-	23.0	9.57	-	220.0	Coated	0.181" (4.60mm)	-	-
00X3515E060 X FLUX 3515 E-CORE Magnetics, a division of Spang & Co.	1,149	-	RFQ	Datasheet	-	Bulk	Active	E	-	XFlux	-	102 nH	-	Ungapped	-	60	-	69.4	84.0	-	5830.0	Uncoated	0.557" (14.15mm)	1.360" (34.54mm)	0.368" (9.35mm)
0F44130UC U SHAPE CORE Magnetics, a division of Spang & Co.	2,487	-	RFQ	Datasheet	-	Bulk	Active	UR	-	F	-	1.83 µH	±25%	Ungapped	-	3000	-	154.8	112.1	105.4	17346.0	Uncoated	1.201" (30.50mm)	1.645" (41.78mm)	0.470" (11.94mm)

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.