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
RM5/I-3C94-A125 Ferrite Misc Ferroxcube	3,358	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 5	3C94	-	125 nH	-	Gapped	-	-	0.935	23.2	24.8	18.1	574.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
RM5/I-3C94-A315 Ferrite Misc Ferroxcube	1,071	-	RFQ	Datasheet	RM5/I	Bulk	Active	RM	RM 5	3C94	-	2 µH	±25%	Gapped	-	-	0.935	23.2	24.8	18.1	574.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
RM5/I-3C94-A250 Ferrite Misc Ferroxcube	2,283	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 5	3C94	-	250 nH	±3%	Gapped	186.0	-	0.935	23.2	24.8	18.1	574.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
RM5/I-3C92-A100 Ferrite Misc Ferroxcube	3,202	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 5	3C92	-	100 nH	-	Gapped	-	-	0.935	23.2	24.8	18.1	574.0	Uncoated	0.205" (5.20mm)	0.587" (14.90mm)	0.268" (6.80mm)
EP13-3F3-E40 Ferrite Misc Ferroxcube	4,163	-	RFQ	Datasheet	-	Bulk	Active	EP	EP 13	3F3	-	40 nH	±3%	Gapped	40.0	-	1.24	24.2	19.5	14.9	472.0	Uncoated	0.256" (6.50mm)	0.504" (12.80mm)	0.354" (9.00mm)
B66586G0000X187 FERRITE CORE EPCOS - TDK Electronics	2,206	-	RFQ	Datasheet	B66586	Box	Not For New Designs	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
5695221421 FERRITE CORE PS 95 SET Fair-Rite Products Corp.	1,545	-	RFQ	Datasheet	-	Bulk	Active	PS	-	95	-	-	±25%	Ungapped	-	3000	48.0	31.2	64.8	-	2000.0	Uncoated	-	-	-
0P44216EC E-CORE Magnetics, a division of Spang & Co.	4,108	-	RFQ	Datasheet	-	Bulk	Active	EER	-	P	-	4.173 µH	-	Ungapped	-	2500	-	98.7	175.0	166.0	17300.0	Uncoated	0.850" (21.59mm)	1.657" (42.10mm)	0.579" (14.70mm)
C058280A2 HIGH FLUX 125 PERM KHAKI 280 SIZ Magnetics, a division of Spang & Co.	2,904	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.405" (10.29mm)	53 nH	±8%	Ungapped	-	125	-	21.8	7.52	-	164.0	Coated	0.150" (3.81mm)	-	-
C058291A2 HIGH FLUX 060 PERM KHAKI 290 SIZ Magnetics, a division of Spang & Co.	1,196	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.405" (10.29mm)	32 nH	±8%	Ungapped	-	60	-	21.8	9.45	-	206.0	Coated	0.181" (4.60mm)	-	-
C058281A2 HIGH FLUX 060 PERM KHAKI 280 SIZ Magnetics, a division of Spang & Co.	4,269	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.405" (10.29mm)	25 nH	±8%	Ungapped	-	60	-	21.8	7.52	-	164.0	Coated	0.150" (3.81mm)	-	-
C058041A2 HIGH FLUX 060 PERM KHAKI 040 SIZ Magnetics, a division of Spang & Co.	4,757	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.425" (10.80mm)	32 nH	±8%	Ungapped	-	60	-	23.0	9.57	-	220.0	Coated	0.181" (4.60mm)	-	-
NR42316UG RM DESIGN SCP Magnetics, a division of Spang & Co.	1,980	-	RFQ	Datasheet	-	Bulk	Active	RM	-	R	-	2.7 µH	-	Ungapped	-	2300	-	38.4	63.0	55.4	2440.0	Uncoated	0.323" (8.20mm)	0.913" (23.20mm)	0.433" (11.00mm)
0J40704UG POT CORE Magnetics, a division of Spang & Co.	2,629	-	RFQ	Datasheet	-	Bulk	Active	P	-	J	0.285" (7.24mm)	2.257 µH	-	Ungapped	-	5000	-	9.9	7.0	5.9	69.0	Uncoated	0.082" (2.08mm)	-	-
0W42908TC TOROID UNCOATED Magnetics, a division of Spang & Co.	2,205	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	W	1.142" (29.00mm)	6.34 µH	±30%	Ungapped	-	10000	-	73.2	37.0	-	2704.0	Uncoated	0.295" (7.50mm)	-	-
PW41010UG EP CORE Magnetics, a division of Spang & Co.	2,140	-	RFQ	Datasheet	-	Bulk	Active	EP	-	W	-	4.8 µH	-	Ungapped	-	10000	-	19.3	11.3	8.55	215.0	Uncoated	0.406" (10.30mm)	0.453" (11.50mm)	0.300" (7.60mm)
SF42318UG ROUND-SLAB CORE W/HOLE Magnetics, a division of Spang & Co.	3,087	-	RFQ	Datasheet	-	Bulk	Active	PS	-	F	0.902" (22.90mm)	4 µH	±25%	Ungapped	-	3000	-	41.6	62.2	53.6	2590.0	Uncoated	0.354" (9.00mm)	-	-
FP43808EC E-CORE - FLAT BACKS Magnetics, a division of Spang & Co.	4,012	-	RFQ	Datasheet	-	Bulk	Active	Planar E	-	P	-	8.354 µH	-	Ungapped	-	2500	-	52.4	194.0	194.0	10200.0	Uncoated	0.325" (8.26mm)	1.500" (38.10mm)	1.000" (25.40mm)
C058040A2 HIGH FLUX 125 PERM KHAKI 040 SIZ Magnetics, a division of Spang & Co.	1,802	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.425" (10.80mm)	66 nH	±8%	Ungapped	-	125	-	23.0	9.57	-	220.0	Coated	0.181" (4.60mm)	-	-
0R44020EC E CORE Magnetics, a division of Spang & Co.	3,975	-	RFQ	Datasheet	-	Bulk	Active	E	-	R	-	4.6 µH	-	Ungapped	-	2300	-	97.0	178.0	175.0	17300.0	Uncoated	0.827" (21.00mm)	1.693" (43.00mm)	0.598" (15.20mm)

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.