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
RM8/I-3C97 FERRITE CORE RM 3C97 2PC SET Ferroxcube	2,976	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 8	3C97	-	-	-	Ungapped	-	-	0.604	38.4	63.0	55.4	2440.0	Uncoated	0.646" (16.40mm)	0.913" (23.20mm)	0.433" (11.00mm)
RM8/I-3F36 FERRITE CORE RM 3F36 2PC SET Ferroxcube	1,050	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 8	3F36	-	-	±25%	Ungapped	-	-	0.604	38.4	63.0	55.4	2440.0	Uncoated	0.646" (16.40mm)	0.913" (23.20mm)	0.433" (11.00mm)
RM8/I-3F46 FERRITE CORE RM 3F46 2PC SET Ferroxcube	3,325	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 8	3F46	-	-	±25%	Ungapped	-	-	0.604	38.4	63.0	55.4	2440.0	Uncoated	0.646" (16.40mm)	0.913" (23.20mm)	0.433" (11.00mm)
9598354202 FERRITE CORE EER SET Fair-Rite Products Corp.	4,473	-	RFQ	Datasheet	-	Bulk	Active	EER	-	-	-	-	±25%	Ungapped	-	2400	82.0	91.1	111.0	100.0	10140.0	Uncoated	-	1.378" (35.00mm)	0.445" (11.30mm)
00K4017E026 KOOL MU 4017 E CORE Magnetics, a division of Spang & Co.	3,390	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	56 nH	±8%	Ungapped	-	26	-	98.4	128.0	-	12600.0	Uncoated	0.830" (21.08mm)	1.687" (42.85mm)	0.424" (10.77mm)
HJ42311UG DOUBLE SLAB CP W/HOLE Magnetics, a division of Spang & Co.	2,534	-	RFQ	Datasheet	-	Bulk	Active	ER	-	J	-	7.853 µH	-	Ungapped	-	5000	-	27.0	48.2	37.8	1300.0	Uncoated	0.218" (5.54mm)	0.900" (22.86mm)	0.600" (15.25mm)
LPX4225E026L107 X FLUX 026 PERM LP 4225 SIZE Magnetics, a division of Spang & Co.	1,501	-	RFQ	Datasheet	-	Bulk	Active	ELP	-	XFlux	-	116 nH	±8%	Ungapped	-	26	-	69.7	206.0	-	14360.0	Uncoated	0.421" (10.40mm)	1.654" (42.00mm)	0.984" (25.00mm)
00K4017E040 KOOL MU 4017 E CORE Magnetics, a division of Spang & Co.	2,901	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	76 nH	±8%	Ungapped	-	40	-	98.4	128.0	-	12600.0	Uncoated	0.830" (21.08mm)	1.687" (42.85mm)	0.424" (10.77mm)
FR43809EC E CORE Magnetics, a division of Spang & Co.	1,004	-	RFQ	Datasheet	-	Bulk	Active	Planar E	-	R	-	7.3 µH	-	Ungapped	-	2300	-	57.8	192.0	191.0	11100.0	Uncoated	0.375" (9.53mm)	1.500" (38.10mm)	1.000" (25.40mm)
00K4017E060 KOOL MU 4017 E CORE Magnetics, a division of Spang & Co.	3,317	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	105 nH	±8%	Ungapped	-	60	-	98.4	128.0	-	12600.0	Uncoated	0.830" (21.08mm)	1.687" (42.85mm)	0.424" (10.77mm)
ZF42908TC TOROID GREY COATED Magnetics, a division of Spang & Co.	4,572	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	F	1.177" (29.90mm)	1.902 µH	±20%	Ungapped	-	3000	-	73.2	36.0	-	2632.0	Epoxy	0.317" (8.05mm)	-	-
C055014A2 MPP 173 PERM GREY 020 SIZE Magnetics, a division of Spang & Co.	3,911	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.275" (6.99mm)	69 nH	±8%	Ungapped	-	173	-	13.6	4.7	-	64.0	Coated	0.135" (3.43mm)	-	-
00K4017E090 KOOL MU 4017 E CORE Magnetics, a division of Spang & Co.	4,838	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	151 nH	±8%	Ungapped	-	90	-	98.4	128.0	-	12600.0	Uncoated	0.830" (21.08mm)	1.687" (42.85mm)	0.424" (10.77mm)
C055234A2 MPP 173 PERM GREY 240 SIZE Magnetics, a division of Spang & Co.	3,457	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.285" (7.24mm)	75 nH	±8%	Ungapped	-	173	-	13.6	4.76	-	64.9	Coated	0.125" (3.18mm)	-	-
NL42316UG RM NH CORE Magnetics, a division of Spang & Co.	1,774	-	RFQ	Datasheet	-	Bulk	Active	RM	-	L	-	1.7 µH	±25%	Ungapped	-	900	-	38.4	63.0	55.4	2440.0	Uncoated	0.323" (8.20mm)	0.913" (23.20mm)	0.433" (11.00mm)
C058028A2 HIGH FLUX 160 PERM KHAKI 030 SIZ Magnetics, a division of Spang & Co.	1,498	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.335" (8.51mm)	66 nH	±8%	Ungapped	-	160	-	17.9	5.99	-	107.0	Coated	0.150" (3.81mm)	-	-
0L42020UG PQ CORE Magnetics, a division of Spang & Co.	1,168	-	RFQ	Datasheet	-	Bulk	Active	PQ	-	L	-	1.17 µH	±25%	Ungapped	-	900	-	45.7	62.6	59.1	2850.0	Uncoated	0.398" (10.10mm)	0.839" (21.30mm)	0.551" (14.00mm)
C055287A2 MPP 200 PERM GREY 290 SIZE Magnetics, a division of Spang & Co.	4,347	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.405" (10.29mm)	105 nH	±8%	Ungapped	-	200	-	21.8	9.45	-	206.0	Coated	0.181" (4.60mm)	-	-
C055017A2 MPP 200 PERM GREY 020 SIZE Magnetics, a division of Spang & Co.	1,230	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.275" (6.99mm)	80 nH	±8%	Ungapped	-	200	-	13.6	4.7	-	64.0	Coated	0.135" (3.43mm)	-	-
T60004L2022W867 W867 VACUUMSCHMELZE	4,111	-	RFQ	Datasheet	-	Box	Active	Toroid	-	Nanocrystalline	0.945" (24.00mm)	4.3 µH	-	Ungapped	-	-	-	6.1	120.0	-	-	Epoxy	0.315" (8.00mm)	-	-

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.