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
PQ26/25-3C90 Ferrite Misc Ferroxcube	3,582	-	RFQ	Datasheet	-	Bulk	Active	PQ	PQ 26 x 25	3C90	-	5.25 µH	±25%	Ungapped	1890.0	-	0.451	54.3	120.0	108.0	6530.0	Uncoated	0.486" (12.35mm)	1.075" (27.30mm)	0.748" (19.00mm)
PQ26/25-3C91 Ferrite Misc Ferroxcube	4,554	-	RFQ	Datasheet	-	Bulk	Active	PQ	PQ 26 x 25	3C91	-	6.01 µH	±25%	Ungapped	-	-	0.451	54.3	120.0	108.0	6530.0	Uncoated	0.486" (12.35mm)	1.075" (27.30mm)	0.748" (19.00mm)
B65938A0000X022 FERRITE CORE EPCOS - TDK Electronics	3,023	-	RFQ	Datasheet	PCH18/4.9	Box	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
B65541D0000R041 FERRITE CORE P 2.8UH N41 2PCS EPCOS - TDK Electronics	4,457	-	RFQ	Datasheet	P14/8	Box	Active	P (Pot Core)	P 14 x 8	N41	0.563" (14.30mm)	2.8 µH	-20%, +30%	Ungapped	1780.0	2800	0.8	20.0	25.0	20.0	500.0	Uncoated	0.167" (4.25mm)	-	-
ER54/18/18-3C90-G1200 FERRITE CORE ER 3C90 Ferroxcube	4,215	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 54 x 18 x 18	3C90	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.720" (18.30mm)	2.106" (53.50mm)	0.707" (17.95mm)
ER54/18/18-3C94-G1000 FERRITE CORE ER 3C94 Ferroxcube	2,705	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 54 x 18 x 18	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.720" (18.30mm)	2.106" (53.50mm)	0.707" (17.95mm)
ER54/18/18-3C94-G500 FERRITE CORE ER 3C94 Ferroxcube	3,881	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 54 x 18 x 18	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.720" (18.30mm)	2.106" (53.50mm)	0.707" (17.95mm)
B66484G0120X149 ER25/6/15 N49 GAP 0.12+ EPCOS - TDK Electronics	2,289	-	RFQ	Datasheet	-	Tray	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
B66325G0800X187 FERRITE CORE E N87 EPCOS - TDK Electronics	2,801	-	RFQ	Datasheet	E42/21/15	Box	Active	E	E 42 x 21 x 15	N87	-	-	-	Gapped	-	2200	0.54	97.0	178.0	175.0	17300.0	Uncoated	0.835" (21.20mm)	1.654" (42.00mm)	0.598" (15.20mm)
B66325G2500X187 FERRITE CORE E N87 EPCOS - TDK Electronics	2,142	-	RFQ	Datasheet	E42/21/15	Box	Active	E	E 42 x 21 x 15	N87	-	-	-	Gapped	-	2200	0.54	97.0	178.0	175.0	17300.0	Uncoated	0.835" (21.20mm)	1.654" (42.00mm)	0.598" (15.20mm)
E38/8/25-3C92 FERRITE CORE E 3C92 Ferroxcube	1,307	-	RFQ	Datasheet	-	Bulk	Active	E	E 38 x 8 x 25	3C92	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.325" (8.26mm)	1.500" (38.10mm)	1.000" (25.40mm)
ER48/21/21-3C94-G200 FERRITE CORE ER 3C94 Ferroxcube	3,108	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 48 x 21 x 21	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.835" (21.20mm)	1.890" (48.00mm)	0.827" (21.00mm)
ER48/21/21-3C94-G125 Ferrite Misc Ferroxcube	2,620	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RM4-3H3 Ferrite Misc Ferroxcube	2,775	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 4	3H3	-	900 nH	±25%	Ungapped	1390.0	-	1.94	21.3	11.0	8.1	230.0	Uncoated	0.205" (5.20mm)	0.433" (11.00mm)	0.181" (4.60mm)
RM5-3D3-A100/N Ferrite Misc Ferroxcube	1,015	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 5	3D3	-	100 nH	±3%	Gapped	80.0	-	1.01	21.4	21.2	14.8	450.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
RM5-3D3-A160/N Ferrite Misc Ferroxcube	3,752	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 5	3D3	-	160 nH	±4%	Gapped	130.0	-	1.01	21.4	21.2	14.8	450.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
RM4-3D3 Ferrite Misc Ferroxcube	2,717	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 4	3D3	-	400 nH	±25%	Ungapped	616.0	-	1.94	21.3	11.0	8.1	230.0	Uncoated	0.205" (5.20mm)	0.433" (11.00mm)	0.181" (4.60mm)
0W42915TC TOROID UNCOATED Magnetics, a division of Spang & Co.	1,328	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	W	1.142" (29.00mm)	12.894 µH	±30%	Ungapped	-	10000	-	73.2	74.9	-	5481.0	Uncoated	0.598" (15.20mm)	-	-
0E41408UG POT CORE Magnetics, a division of Spang & Co.	1,489	-	RFQ	Datasheet	-	Bulk	Active	P	-	E	0.563" (14.30mm)	2.1 µH	±25%	Ungapped	-	2000	-	19.8	25.1	19.8	495.0	Uncoated	0.164" (4.17mm)	-	-
00K4317E090 KOOL MU 4317 E CORE Magnetics, a division of Spang & Co.	2,462	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	234 nH	±8%	Ungapped	-	90	-	77.5	152.0	-	11800.0	Uncoated	0.650" (16.51mm)	1.609" (40.87mm)	0.493" (12.52mm)

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.