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
0077241AY KOOL MU 060 PERM AY 240 SIZE Magnetics, a division of Spang & Co.	4,423	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
0077847A7 KOOL MU 040 PERM BLACK 206 SIZE Magnetics, a division of Spang & Co.	3,052	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.800" (20.32mm)	21 nH	±8%	Ungapped	-	40	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
0077848A7 KOOL MU 060 PERM BLACK 206 SIZE Magnetics, a division of Spang & Co.	4,993	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.800" (20.32mm)	32 nH	±8%	Ungapped	-	60	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
ZP41605TC TOROID GREY COATED Magnetics, a division of Spang & Co.	2,807	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	P	0.655" (16.64mm)	1.375 µH	±25%	Ungapped	-	2500	-	37.2	15.6	-	582.0	Epoxy	0.205" (5.20mm)	-	-
0077208A7 KOOL MU 026 PERM BLACK 206 SIZE Magnetics, a division of Spang & Co.	2,059	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mµ	0.800" (20.32mm)	14 nH	±8%	Ungapped	-	26	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
0077210A7 KOOL MU 090 PERM BLACK 206 SIZE Magnetics, a division of Spang & Co.	4,876	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.800" (20.32mm)	49 nH	±8%	Ungapped	-	90	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
0077211A7 KOOL MU 075 PERM BLACK 206 SIZE Magnetics, a division of Spang & Co.	1,200	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.800" (20.32mm)	41 nH	±8%	Ungapped	-	75	-	50.9	22.1	-	1120.0	Uncoated	0.250" (6.35mm)	-	-
B65855B0000R057 FERRITE CORE EP 900NH T57 2PCS EPCOS - TDK Electronics	2,376	-	RFQ	Datasheet	EP6	Box	Active	EP	EP 6	T57	-	900 nH	-20%, +30%	Ungapped	2400.0	4000	3.35	10.28	3.06	2.3	31.0	Uncoated	0.120" (3.05mm)	0.242" (6.15mm)	0.154" (3.90mm)
E34/14/9-3C94-G200 FERRITE CORE E 3C94 Ferroxcube	3,278	-	RFQ	Datasheet	-	Bulk	Active	E	E 34 x 14 x 9	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.555" (14.10mm)	1.350" (34.30mm)	0.366" (9.30mm)
E34/14/9-3C94-G500 FERRITE CORE E 3C94 Ferroxcube	4,265	-	RFQ	Datasheet	-	Bulk	Active	E	E 34 x 14 x 9	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.555" (14.10mm)	1.350" (34.30mm)	0.366" (9.30mm)
ETD34/17/11-3C94-G200 FERRITE CORE ETD 3C94 Ferroxcube	2,489	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 34 x 17 x 11	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.681" (17.30mm)	1.378" (35.00mm)	0.437" (11.10mm)
ETD34/17/11-3C90-G200 Ferrite Misc Ferroxcube	2,653	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 34 x 17 x 11	3C90	-	520 nH	-	Gapped	340.0	-	0.81	78.6	97.1	91.6	7640.0	Uncoated	0.681" (17.30mm)	1.378" (35.00mm)	0.437" (11.10mm)
ETD34/17/11-3C94-G100 Ferrite Misc Ferroxcube	4,797	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 34 x 17 x 11	3C94	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.681" (17.30mm)	1.378" (35.00mm)	0.437" (11.10mm)
ETD34/17/11-3C94-G310 Ferrite Misc Ferroxcube	3,029	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
RM6S/ILP-3F4 Ferrite Misc Ferroxcube	3,751	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 6	3F4	-	1.6 µH	±25%	Ungapped	740.0	-	0.58	21.8	37.5	31.2	820.0	Uncoated	0.177" (4.50mm)	0.701" (17.90mm)	0.323" (8.20mm)
RM6S/ILP-3C96 Ferrite Misc Ferroxcube	4,671	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 6	3C96	-	2.9 µH	±25%	Ungapped	1340.0	-	0.58	21.8	37.5	31.2	820.0	Uncoated	0.177" (4.50mm)	0.701" (17.90mm)	0.323" (8.20mm)
EQ20/R-3C94 Ferrite Misc Ferroxcube	3,100	-	RFQ	Datasheet	-	Bulk	Active	EQ	EQ 20	3C94	-	3.5 µH	±25%	Ungapped	1570.0	-	0.563	33.2	59.0	55.0	1960.0	Uncoated	0.248" (6.30mm)	0.787" (20.00mm)	0.551" (14.00mm)
E30/15/7-3F3 Ferrite Misc Ferroxcube	4,488	-	RFQ	Datasheet	-	Bulk	Active	E	E 30 x 15 x 7	3F3	-	1.6 µH	-	Ungapped	-	-	-	67.0	60.0	49.0	4000.0	Uncoated	0.591" (15.00mm)	1.213" (30.80mm)	0.287" (7.30mm)
B66433G0000X187 FERRITE CORE N87 EPCOS - TDK Electronics	4,142	-	RFQ	Datasheet	ER28/17/11	Box	Active	-	ER 28 x 17 x 11	N87	-	-	-20%, +30%	-	-	-	0.88	75.0	85.4	77.0	6400.0	Uncoated	0.449" (11.40mm)	1.124" (28.55mm)	0.665" (16.90mm)
B66453U0295K187 ELP18/4/10 N87 295 +10% EPCOS - TDK Electronics	2,244	-	RFQ	Datasheet	-	Tray	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

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.