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
ZF42506TC TOROID GREY COATED Magnetics, a division of Spang & Co.	1,007	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	F	1.035" (26.29mm)	3.627 µH	±20%	Ungapped	-	3000	-	55.3	57.9	-	3199.0	Epoxy	0.400" (10.16mm)	-	-
0079381A7 KOOL MU MAX 060 PERM BLACK 380 S Magnetics, a division of Spang & Co.	2,022	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.680" (17.27mm)	43 nH	±8%	Ungapped	-	60	-	41.4	23.2	-	960.0	Uncoated	0.250" (6.35mm)	-	-
0079382A7 KOOL MU MAX 026 PERM BLACK 380 S Magnetics, a division of Spang & Co.	2,088	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.680" (17.27mm)	19 nH	±8%	Ungapped	-	26	-	41.4	23.2	-	960.0	Uncoated	0.250" (6.35mm)	-	-
FL43208EC E-CORE WITH FLAT BACK Magnetics, a division of Spang & Co.	3,377	-	RFQ	Datasheet	-	Bulk	Active	Planar E/I	-	L	-	2.8 µH	±25%	Ungapped	-	900	-	41.4	130.0	130.0	5380.0	Uncoated	0.250" (6.35mm)	1.250" (31.75mm)	0.800" (20.32mm)
0079387A7 KOOL MU MAX 019 PERM BLACK 380 S Magnetics, a division of Spang & Co.	1,621	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.680" (17.27mm)	14 nH	±8%	Ungapped	-	19	-	41.4	23.2	-	960.0	Uncoated	0.250" (6.35mm)	-	-
0079386A7 KOOL MU MAX 040 PERM BLACK 380 S Magnetics, a division of Spang & Co.	4,975	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu MAX	0.680" (17.27mm)	28 nH	±8%	Ungapped	-	40	-	41.4	23.2	-	960.0	Uncoated	0.250" (6.35mm)	-	-
0J42213UG POT CORE Magnetics, a division of Spang & Co.	3,013	-	RFQ	Datasheet	-	Bulk	Active	P	-	J	0.866" (22.00mm)	9.1 µH	-	Ungapped	-	5000	-	31.5	63.4	50.9	2000.0	Uncoated	0.264" (6.70mm)	-	-
0T42016UG PQ CORE Magnetics, a division of Spang & Co.	3,139	-	RFQ	Datasheet	-	Bulk	Active	PQ	-	T	-	4.08 µH	±25%	Ungapped	-	3000	-	37.6	61.9	59.1	2330.0	Uncoated	0.319" (8.10mm)	0.839" (21.30mm)	0.551" (14.00mm)
RM4/ILP-3C95-A315 Ferrite Misc Ferroxcube	1,659	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 4	3C95	-	315 nH	-	Gapped	-	-	1.19	17.3	14.5	11.3	251.0	Uncoated	0.154" (3.90mm)	0.433" (11.00mm)	0.181" (4.60mm)
RM4/ILP-3C95-A63 Ferrite Misc Ferroxcube	1,877	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 4	3C95	-	63 nH	-	Gapped	-	-	1.19	17.3	14.5	11.3	251.0	Uncoated	0.154" (3.90mm)	0.433" (11.00mm)	0.181" (4.60mm)
RM4/ILP-3C95-A160 Ferrite Misc Ferroxcube	3,409	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 4	3C95	-	160 nH	-	Gapped	-	-	1.19	17.3	14.5	11.3	251.0	Uncoated	0.154" (3.90mm)	0.433" (11.00mm)	0.181" (4.60mm)
RM4/ILP-3E5 Ferrite Misc Ferroxcube	2,415	-	RFQ	Datasheet	RM4/ILP	Bulk	Active	RM	RM 4	3E5	-	-	-	Ungapped	-	-	1.19	17.3	14.5	11.3	251.0	Uncoated	0.154" (3.90mm)	0.433" (11.00mm)	0.181" (4.60mm)
6695272021 FERRITE CORE PQ 95 SET Fair-Rite Products Corp.	4,847	-	RFQ	Datasheet	-	Bulk	Active	PQ	-	95	-	-	±25%	Ungapped	-	3000	37.2	44.8	120.3	113.1	5385.0	Uncoated	-	-	0.748" (19.00mm)
9578343502 FERRITE CORE ETD 78 SET Fair-Rite Products Corp.	3,993	-	RFQ	Datasheet	-	Bulk	Active	ETD	-	78	-	-	±25%	Ungapped	-	2300	82.0	79.0	97.2	91.6	7680.0	Uncoated	0.681" (17.30mm)	-	-
ETD39/20/13-3C97-G1000 FERRITE CORE ETD 3C97 Ferroxcube	4,423	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 39 x 20 x 13	3C97	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.780" (19.80mm)	1.575" (40.00mm)	0.504" (12.80mm)
ETD39/20/13-3C97-G500 FERRITE CORE ETD 3C97 Ferroxcube	1,137	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 39 x 20 x 13	3C97	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.780" (19.80mm)	1.575" (40.00mm)	0.504" (12.80mm)
E41/17/12-3C91-G500 FERRITE CORE E 3C91 Ferroxcube	3,418	-	RFQ	Datasheet	-	Bulk	Active	E	E 41 x 17 x 12	3C91	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.654" (16.60mm)	1.598" (40.60mm)	0.488" (12.40mm)
ETD39/20/13-3F36-G1000 FERRITE CORE ETD 3F36 Ferroxcube	4,676	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 39 x 20 x 13	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.780" (19.80mm)	1.575" (40.00mm)	0.504" (12.80mm)
ETD39/20/13-3F36-G500 FERRITE CORE ETD 3F36 Ferroxcube	4,130	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 39 x 20 x 13	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.780" (19.80mm)	1.575" (40.00mm)	0.504" (12.80mm)
ETD39/20/13-3F46-G1000 FERRITE CORE ETD 3F46 Ferroxcube	1,622	-	RFQ	Datasheet	-	Bulk	Active	ETD	ETD 39 x 20 x 13	3F46	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.780" (19.80mm)	1.575" (40.00mm)	0.504" (12.80mm)

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.