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
RF41812UG R-RM DESIGN Magnetics, a division of Spang & Co.	3,729	-	RFQ	Datasheet	-	Bulk	Active	RM	-	F	-	2.8 µH	±25%	Ungapped	-	3000	-	25.6	32.0	22.6	819.0	Uncoated	0.244" (6.20mm)	0.701" (17.90mm)	0.291" (7.40mm)
B65840F1106T001 FERRITE CORE EP K1 EPCOS - TDK Electronics	2,368	-	RFQ	Datasheet	-	Box	Active	EP	EP 7	K1	-	-	-	-	-	80	-	-	-	-	-	Uncoated	-	-	-
9598283402 FERRITE CORE EER SET Fair-Rite Products Corp.	3,651	-	RFQ	Datasheet	-	Bulk	Active	EER	-	-	-	-	±25%	Ungapped	-	2400	87.0	74.4	85.2	77.0	6337.0	Uncoated	-	1.122" (28.50mm)	-
E41/17/12-3C90 Ferrite Misc Ferroxcube	2,153	-	RFQ	Datasheet	-	Bulk	Active	E	E 41 x 17 x 12	3C90	-	4.1 µH	±25%	Ungapped	1670.0	-	0.517	77.0	149.0	142.0	11500.0	Uncoated	0.654" (16.60mm)	1.598" (40.60mm)	0.488" (12.40mm)
E41/17/12-3C91 FERRITE CORE E 3C91 Ferroxcube	2,813	-	RFQ	Datasheet	-	Bulk	Active	E	E 36 x 21 x 12	3C91	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.856" (21.75mm)	1.417" (36.00mm)	0.472" (12.00mm)
UR42/21/12-3C81 FERRITE CORE UR Ferroxcube	2,607	-	RFQ	Datasheet	-	Bulk	Obsolete	UR	-	-	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.827" (21.00mm)	1.654" (42.00mm)	0.472" (12.00mm)
EFD30/15/9-3F3-A100 Ferrite Misc Ferroxcube	3,597	-	RFQ	Datasheet	-	Bulk	Active	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
EFD30/15/9-3F3-A400 Ferrite Misc Ferroxcube	1,162	-	RFQ	Datasheet	-	Bulk	Active	EFD	EFD 30 x 15 x 9	3F3	-	400 nH	±8%	Gapped	314.0	-	0.98	68.0	69.0	66.0	4700.0	Uncoated	0.591" (15.00mm)	1.181" (30.00mm)	0.358" (9.10mm)
EFD30/15/9-3F3-A160 Ferrite Misc Ferroxcube	2,021	-	RFQ	Datasheet	-	Bulk	Active	EFD	EFD 30 x 15 x 9	3F3	-	160 nH	±3%	Gapped	125.0	-	0.98	68.0	69.0	66.0	4700.0	Uncoated	0.591" (15.00mm)	1.181" (30.00mm)	0.358" (9.10mm)
EFD30/15/9-3F3-A315 Ferrite Misc Ferroxcube	1,619	-	RFQ	Datasheet	-	Bulk	Active	EFD	EFD 30 x 15 x 9	3F3	-	315 nH	±5%	Gapped	247.0	-	0.98	68.0	69.0	66.0	4700.0	Uncoated	0.591" (15.00mm)	1.181" (30.00mm)	0.358" (9.10mm)
28N1110-000 FERRITE CORE 4 HOLE 28 Laird-Signal Integrity Products	1,032	-	RFQ	Datasheet	-	Bulk	Active	Multi-Hole (4)	-	28	-	-	-	Ungapped	-	850	-	-	-	-	-	Uncoated	0.375" (9.53mm)	1.110" (28.19mm)	0.260" (6.60mm)
TX22/14/13-3F3 Ferrite Misc Ferroxcube	3,305	-	RFQ	Datasheet	-	Bulk	Active	Toroid	TX 22 x 14 x 13	3F3	0.880" (22.35mm)	2.2 µH	±20%	Ungapped	-	1800	1.07	54.2	50.9	-	2750.0	Epoxy	0.510" (12.95mm)	-	-
TN29/19/7.5-3C90 Ferrite Misc Ferroxcube	4,427	-	RFQ	Datasheet	-	Bulk	Active	Toroid	TN 29 x 19 x 7.5	3C90	TN 29 x 19 x 7.5	1460 nH	±25%	Ungapped	-	2300	1.98	73.2	36.9	-	2700.0	Coated	0.319" (8.10mm)	-	-
TX25/15/10-3C96 Ferrite Misc Ferroxcube	3,221	-	RFQ	Datasheet	-	Bulk	Active	Toroid	TX 25 x 15 x 10	3C96	0.994" (25.25mm)	-	-	Ungapped	-	-	1.23	60.2	48.9	-	2944.0	Epoxy	0.421" (10.40mm)	-	-
LPK3020E026L118 KOOL MU 026 PERM LP 3020 SIZE Magnetics, a division of Spang & Co.	1,826	-	RFQ	Datasheet	-	Bulk	Active	ELP	-	Kool Mµ	-	65 nH	±8%	Ungapped	-	26	-	68.5	114.0	-	7800.0	Uncoated	0.465" (11.80mm)	1.181" (30.00mm)	0.787" (20.00mm)
0W40905UG POT CORE Magnetics, a division of Spang & Co.	2,465	-	RFQ	Datasheet	-	Bulk	Active	P	-	W	0.366" (9.30mm)	6.029 µH	-	Ungapped	-	10000	-	12.5	10.1	8.0	126.0	Uncoated	0.106" (2.70mm)	-	-
0J40905UG POT CORE Magnetics, a division of Spang & Co.	1,849	-	RFQ	Datasheet	-	Bulk	Active	P	-	J	0.366" (9.30mm)	2.727 µH	-	Ungapped	-	5000	-	12.5	10.1	8.0	126.0	Uncoated	0.106" (2.70mm)	-	-
0R42915TC TOROID UNCOATED Magnetics, a division of Spang & Co.	4,849	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	R	1.142" (29.00mm)	2.96 µH	±25%	Ungapped	-	2300	-	73.2	74.9	-	5481.0	Uncoated	0.598" (15.20mm)	-	-
HJ41408UG DOUBLE SLAB CP W/HOLE Magnetics, a division of Spang & Co.	1,701	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	J	-	4.107 µH	-	Ungapped	-	5000	-	20.6	21.0	19.2	433.0	Uncoated	0.334" (8.48mm)	0.551" (14.00mm)	0.370" (9.40mm)
LPK3020E060L118 KOOL MU 060 PERM LP 3020 SIZE Magnetics, a division of Spang & Co.	4,956	-	RFQ	Datasheet	-	Bulk	Active	ELP	-	Kool Mµ	-	134 nH	±8%	Ungapped	-	60	-	68.5	114.0	-	7800.0	Uncoated	0.465" (11.80mm)	1.181" (30.00mm)	0.787" (20.00mm)

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.