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
ER40/22/13-3C94-G200 FERRITE CORE ER 3C94 Ferroxcube	4,445	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 40 x 22 x 13	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.882" (22.40mm)	1.575" (40.00mm)	0.528" (13.40mm)
EFD10/5/3-3F3-S Ferrite Misc Ferroxcube	3,920	-	RFQ	Datasheet	-	Bulk	Active	EFD	EFD 10 x 5 x 3	3F3	-	500 nH	±25%	Ungapped	1290.0	-	3.29	23.7	7.2	6.5	171.0	Uncoated	0.205" (5.20mm)	0.413" (10.50mm)	0.106" (2.70mm)
EFD12/6/3.5-3C92-S Ferrite Misc Ferroxcube	1,269	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
B65843A0000R057 FERRITE CORE EP 2.5UH T57 2PCS EPCOS - TDK Electronics	1,582	-	RFQ	Datasheet	EP13	Box	Active	EP	EP 13	T57	-	2.5 µH	-20%, +30%	Ungapped	2470.0	4000	1.24	24.2	19.5	14.9	472.0	Uncoated	0.256" (6.50mm)	0.504" (12.80mm)	0.354" (9.00mm)
6698272521 FERRITE CORE PQ SET Fair-Rite Products Corp.	3,105	-	RFQ	Datasheet	-	Bulk	Active	PQ	-	-	-	-	±25%	Ungapped	-	2400	45.9	54.0	117.7	113.1	6359.0	Uncoated	0.492" (12.50mm)	-	0.748" (19.00mm)
RM7/ILP-3E5 Ferrite Misc Ferroxcube	1,780	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 7	3E5	-	-	±25%	Ungapped	-	-	0.52	23.5	45.3	39.6	1060.0	Uncoated	0.386" (9.80mm)	0.799" (20.30mm)	-
TX23/14/7-3C97 Ferrite Misc Ferroxcube	2,584	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
TUB10/4.2/20-4B1 Ferrite Misc Ferroxcube	2,580	-	RFQ	Datasheet	-	Bulk	Active	Tube	TUB 10 x 4.2 x 20	4B1	0.394" (10.00mm)	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	-	0.787" (20.00mm)	-
0077120A7HT14 KOOL MU 125 PERM BLACK 120 SIZE Magnetics, a division of Spang & Co.	4,148	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.650" (16.51mm)	144 nH	±8%	Ungapped	-	125	-	41.2	38.4	-	1580.0	Uncoated	0.520" (13.21mm)	-	-
0077121A7HT14 KOOL MU 060 PERM BLACK 120 SIZE Magnetics, a division of Spang & Co.	4,001	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.650" (16.51mm)	35 nH	±8%	Ungapped	-	60	-	41.2	38.4	-	1580.0	Uncoated	0.520" (13.21mm)	-	-
EFD10/5/3-3C95-A63-S FERRITE CORE EFD 63NH 3C95 2PC Ferroxcube	2,564	-	RFQ	Datasheet	-	Bulk	Active	EFD	EFD 10 x 5 x 3	3C95	-	63 nH	±8%	Gapped	165.0	-	3.29	23.7	7.2	6.5	171.0	Uncoated	0.205" (5.20mm)	0.413" (10.50mm)	0.106" (2.70mm)
RM8/ILP-3C94-A400 Ferrite Misc Ferroxcube	3,815	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 8	3C94	-	400 nH	-	Gapped	-	-	0.44	28.7	64.9	55.4	1860.0	Uncoated	0.228" (5.80mm)	0.913" (23.20mm)	0.433" (11.00mm)
RM8/ILP-3C94-A210 Ferrite Misc Ferroxcube	2,382	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 8	3C94	-	210 nH	-	Gapped	-	-	0.44	28.7	64.9	55.4	1860.0	Uncoated	0.228" (5.80mm)	0.913" (23.20mm)	0.433" (11.00mm)
B66361G0000X195 FERRITE CORE ETD N95 EPCOS - TDK Electronics	3,469	-	RFQ	Datasheet	ETD34/17/11	Tape & Reel (TR)	Active	ETD	ETD 34/17/11	N95	-	-	-20%, +30%	Ungapped	2170.0	-	0.81	78.6	97.1	91.6	7630.0	Uncoated	0.689" (17.50mm)	1.339" (34.00mm)	0.437" (11.10mm)
PT14/8-3F3 Ferrite Misc Ferroxcube	1,198	-	RFQ	Datasheet	-	Bulk	Active	P	PT 14 x 8	3F3	0.553" (14.05mm)	1.65 µH	±25%	Ungapped	1190.0	-	0.91	21.1	23.3	19.9	492.0	Uncoated	0.163" (4.15mm)	-	-
ER42/22/15-3C94-G200 FERRITE CORE ER 3C94 Ferroxcube	2,584	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 42 x 22 x 15	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.858" (21.80mm)	1.654" (42.00mm)	0.591" (15.00mm)
E36/21/12-3F36 FERRITE CORE E 3F36 Ferroxcube	4,325	-	RFQ	Datasheet	-	Bulk	Active	E	E 36 x 21 x 12	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.856" (21.75mm)	1.417" (36.00mm)	0.472" (12.00mm)
EQ25/LP-3F36 FERRITE CORE EQ 3F36 Ferroxcube	4,875	-	RFQ	Datasheet	-	Bulk	Active	EQ	EQ 25 x LP	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.220" (5.60mm)	0.984" (25.00mm)	0.709" (18.00mm)
EQ25/LP-3F46 FERRITE CORE EQ 3F46 Ferroxcube	2,401	-	RFQ	Datasheet	-	Bulk	Active	EQ	EQ 25 x LP	3F46	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.220" (5.60mm)	0.984" (25.00mm)	0.709" (18.00mm)
EQ25-3F36 FERRITE CORE EQ 3F36 Ferroxcube	4,382	-	RFQ	Datasheet	-	Bulk	Active	EQ	EQ 25	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.315" (8.00mm)	0.984" (25.00mm)	0.709" (18.00mm)

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.