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
0078208A7 X FLUX 026 PERM BROWN 206 SIZE Magnetics, a division of Spang & Co.	1,923	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	XFlux	0.800" (20.32mm)	14 nH	±8%	Ungapped	-	26	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
SF41811UG ROUND-SLAB CORE W/HOLE Magnetics, a division of Spang & Co.	1,094	-	RFQ	Datasheet	-	Bulk	Active	PS	-	F	0.709" (18.00mm)	3.498 µH	±25%	Ungapped	-	3000	-	27.2	40.6	32.9	1110.0	Uncoated	0.209" (5.30mm)	-	-
0R44317EC E-CORE Magnetics, a division of Spang & Co.	2,784	-	RFQ	Datasheet	-	Bulk	Active	E	-	R	-	3.9 µH	-	Ungapped	-	2300	-	77.0	149.0	142.0	11500.0	Uncoated	0.654" (16.60mm)	1.598" (40.60mm)	0.488" (12.40mm)
0R44119EC EC-CORE Magnetics, a division of Spang & Co.	1,617	-	RFQ	Datasheet	-	Bulk	Active	EC	-	R	-	3.473 µH	-	Ungapped	-	2300	-	89.3	121.0	106.0	10800.0	Uncoated	0.768" (19.50mm)	1.598" (40.60mm)	0.457" (11.60mm)
0J42908TC TOROID UNCOATED Magnetics, a division of Spang & Co.	2,733	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	J	1.142" (29.00mm)	3.17 µH	±20%	Ungapped	-	5000	-	73.2	37.0	-	2679.0	Uncoated	0.293" (7.43mm)	-	-
0077270AY KOOL MU 125 PERM AY 270 SIZE Magnetics, a division of Spang & Co.	4,295	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.260" (6.60mm)	103 nH	±12%	Ungapped	-	125	-	13.6	9.2	-	125.0	Uncoated	0.188" (4.78mm)	-	-
EQX2014E040L061 X FLUX 040 PERM EQ 2014 SIZE Magnetics, a division of Spang & Co.	1,204	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	XFlux	-	98 nH	±8%	Ungapped	-	40	-	35.8	60.8	-	2180.0	Uncoated	0.240" (6.10mm)	0.787" (20.00mm)	0.551" (14.00mm)
EQX2014E026L061 X FLUX 026 PERM EQ 2014 SIZE Magnetics, a division of Spang & Co.	4,136	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	XFlux	-	67 nH	±8%	Ungapped	-	26	-	35.8	60.8	-	2180.0	Uncoated	0.240" (6.10mm)	0.787" (20.00mm)	0.551" (14.00mm)
ZJ42508TC TOROID GREY COATED Magnetics, a division of Spang & Co.	4,069	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	J	1.035" (26.29mm)	4.83 µH	±20%	Ungapped	-	5000	-	61.5	48.0	-	2981.0	Epoxy	0.419" (10.65mm)	-	-
NR41912UG RM CORE Magnetics, a division of Spang & Co.	4,555	-	RFQ	Datasheet	-	Bulk	Active	RM	-	R	-	2.213 µH	-	Ungapped	-	2300	-	29.2	37.0	31.2	1090.0	Uncoated	0.244" (6.20mm)	0.720" (18.30mm)	0.323" (8.20mm)

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.