Ferrite Cores

Browse available Ferrite Cores components by manufacturer and part number. Review stock status, datasheets and key technical parameters to compare suitable options for design, maintenance, replacement or purchasing.

If you already have a target MPN or BOM, send it to EGOO with the required quantity. Our sourcing team can check availability, lead time and quotation options, including hard-to-find and obsolete parts.

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
0079448A7 KOOL MU MAX 026 PERM BLACK 454 S Magnetics, a division of Spang & Co.	1,447	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	1.689" (42.90mm)	47 nH	±8%	Ungapped	-	26	-	102.0	147.5	-	15100.0	Uncoated	0.640" (16.26mm)	-	-
0076448A7 KOOL MU HF 026 PERM BLACK 454 SI Magnetics, a division of Spang & Co.	3,376	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	1.689" (42.90mm)	47 nH	±8%	Ungapped	-	26	-	102.0	147.5	-	15100.0	Uncoated	0.640" (16.26mm)	-	-
ZR44916TC TOROID-GREY COATED Magnetics, a division of Spang & Co.	3,541	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	R	1.977" (50.22mm)	2.71 µH	±25%	Ungapped	-	2300	-	127.0	118.0	-	15010.0	Epoxy	0.655" (16.64mm)	-	-
RM12/I-3F36-A400 FERRITE CORE RM 400NH 3F36 2PC Ferroxcube	2,576	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 12	3F36	-	400 nH	±3%	Gapped	123.0	-	0.388	56.6	146.0	125.0	8340.0	Uncoated	0.965" (24.50mm)	1.472" (37.40mm)	0.634" (16.10mm)
RM12/I-3F36-A630 FERRITE CORE RM 630NH 3F36 2PC Ferroxcube	1,260	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 12	3F36	-	630 nH	±3%	Gapped	194.0	-	0.388	56.6	146.0	125.0	8340.0	Uncoated	0.965" (24.50mm)	1.472" (37.40mm)	0.634" (16.10mm)
ER51/10/38-3C97 FERRITE CORE ER 3C97 Ferroxcube	1,572	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 51 x 10 x 38	3C97	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.400" (10.16mm)	2.008" (51.00mm)	1.500" (38.10mm)
ER51/10/38-3F36 FERRITE CORE ER 3F36 Ferroxcube	3,079	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 51 x 10 x 38	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.400" (10.16mm)	2.008" (51.00mm)	1.500" (38.10mm)
B66506P0000X195 FERRITE CORE I N95 1PC EPCOS - TDK Electronics	1,682	-	RFQ	Datasheet	I30/2.7/20	Box	Active	I	I 30 x 3	N95	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.106" (2.70mm)	1.181" (30.00mm)	0.787" (20.00mm)
0055114AY MPP 173 PERM AY 120 SIZE Magnetics, a division of Spang & Co.	2,170	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.653" (16.59mm)	104 nH	±8%	Ungapped	-	173	-	41.2	19.2	-	791.0	Uncoated	0.250" (6.35mm)	-	-
0075212A7 75 SERIES 040 PERM BLACK 109 SIZ Magnetics, a division of Spang & Co.	4,808	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	75	2.250" (57.15mm)	50 nH	±8%	Ungapped	-	40	-	143.0	144.0	-	20700.0	Uncoated	0.550" (13.97mm)	-	-
0075111A7 75 SERIES 026 PERM BLACK 109 SIZ Magnetics, a division of Spang & Co.	4,528	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	75	2.250" (57.15mm)	33 nH	±8%	Ungapped	-	26	-	143.0	144.0	-	20700.0	Uncoated	0.585" (14.86mm)	-	-
0075110A7 75 SERIES 060 PERM BLACK 109 SIZ Magnetics, a division of Spang & Co.	3,219	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	75	2.250" (57.15mm)	75 nH	±8%	Ungapped	-	60	-	143.0	144.0	-	20700.0	Uncoated	0.550" (13.97mm)	-	-
B64290L0668X065 FERRITE CORE TOROID 8.8UH T65 EPCOS - TDK Electronics	1,511	-	RFQ	Datasheet	TX38/19/13	Box	Active	Toroid	-	T65	1.551" (39.40mm)	8.8 µH	±30%	Ungapped	-	5000	0.71	82.97	116.2	-	9644.0	Epoxy	0.543" (13.80mm)	-	-
UR48/39/17-3C90 FERRITE CORE UR 3C90 Ferroxcube	4,896	-	RFQ	Datasheet	-	Bulk	Active	UR	UR 48 x 39 x 17	3C90	-	-	-	-	-	-	-	-	-	-	-	Uncoated	1.551" (39.40mm)	1.890" (48.00mm)	0.669" (17.00mm)
B66395G0200X187 FERRITE CORE ETD N87 1PC EPCOS - TDK Electronics	2,949	-	RFQ	Datasheet	ETD54/28/19	Box	Active	ETD	ETD 54 x 28 x 19	N87	-	-	-	Gapped	-	-	-	-	-	-	-	Uncoated	1.094" (27.80mm)	2.156" (54.50mm)	0.760" (19.30mm)
B66395U0160A187 FERRITE CORE EPCOS - TDK Electronics	3,055	-	RFQ	Datasheet	ETD54/28/19	Box	Active	-	-	-	-	-	-	Gapped	-	-	-	-	-	-	-	-	-	-	-
0055117AY MPP 200 PERM AY 120 SIZE Magnetics, a division of Spang & Co.	1,432	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.653" (16.59mm)	115 nH	±8%	Ungapped	-	200	-	41.2	19.2	-	791.0	Uncoated	0.250" (6.35mm)	-	-
00K6533U026 KOOL MU 6533 U CORE Magnetics, a division of Spang & Co.	4,994	-	RFQ	Datasheet	-	Bulk	Active	U	-	Kool Mu	-	82 nH	±8%	Ungapped	-	26	-	199.0	250.0	-	49750.0	Uncoated	1.280" (32.51mm)	2.618" (66.50mm)	0.788" (20.02mm)
UR64/40/20-D-3C90 FERRITE CORE UR 3C90 Ferroxcube	3,677	-	RFQ	Datasheet	-	Bulk	Active	UR	UR 64 x 40 x 20	3C90	-	-	-	-	-	-	-	-	-	-	-	Uncoated	1.575" (40.00mm)	2.520" (64.00mm)	0.787" (20.00mm)
RM12/ILP-3F36-E250 FERRITE CORE RM 250NH 3F36 2PC Ferroxcube	2,400	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 12	3F36	-	250 nH	±3%	Gapped	56.0	-	0.388	42.0	148.0	125.0	6200.0	Uncoated	0.965" (24.50mm)	1.472" (37.40mm)	0.634" (16.10mm)

Ferrite Cores FAQ

What Ferrite Cores components can I source from EGOO?

You can browse available Ferrite Cores product families, manufacturers and part numbers on this page, then review stock, datasheets and technical information for suitable options.

Can EGOO help with hard-to-source or obsolete Ferrite Cores parts?

Yes. EGOO provides sourcing support for shortage, obsolete and hard-to-find electronic components. Send us the target manufacturer part number and quantity for checking.

Does EGOO support BOM and small-batch sourcing?

Yes. We support BOM sourcing, prototype requirements and small-batch supply, together with stock, lead-time and quotation assistance.

How do I request pricing and availability?

Submit the manufacturer part number, required quantity and any package, date-code or delivery requirements through the RFQ form, and our team will review available sourcing options.