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
P14/8-3H3 Ferrite Misc Ferroxcube	4,341	-	RFQ	Datasheet	-	Bulk	Active	P	P 14 x 8	3H3	0.563" (14.30mm)	2.15 µH	±25%	Ungapped	1350.0	-	0.789	19.8	25.1	19.8	495.0	Uncoated	0.165" (4.20mm)	-	-
ER41/7.6/32-3C96 FERRITE CORE ER 3C96 Ferroxcube	4,447	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 41 x 7.6 x 32	3C96	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.300" (7.60mm)	1.600" (40.64mm)	1.260" (32.00mm)
ER41/7.6/32-3F4 FERRITE CORE ER 3F4 Ferroxcube	4,215	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 41 x 7.6 x 32	3F4	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.300" (7.60mm)	1.600" (40.64mm)	1.260" (32.00mm)
B65807P0000R092 FERRITE CORE RM 2.3UH N92 2PCS EPCOS - TDK Electronics	2,733	-	RFQ	Datasheet	RM6	Box	Active	RM	RM 6 LP	N92	-	2.3 µH	-20%, +30%	Ungapped	1060.0	1500	0.58	21.8	37.5	31.2	820.0	Uncoated	0.177" (4.50mm)	0.701" (17.90mm)	0.323" (8.20mm)
0077140AY KOOL MU 125 PERM AY 140 SIZE Magnetics, a division of Spang & Co.	4,022	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.140" (3.56mm)	26 nH	±15%	Ungapped	-	125	-	8.06	1.3	-	10.5	Uncoated	0.060" (1.52mm)	-	-
0077120AY KOOL MU 125 PERM AY 120 SIZE Magnetics, a division of Spang & Co.	2,911	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	Kool Mu	0.653" (16.59mm)	72 nH	±8%	Ungapped	-	125	-	41.2	19.2	-	791.0	Uncoated	0.250" (6.35mm)	-	-
0058033A2 HIGH FLUX 014 PERM KHAKI 030 SIZ Magnetics, a division of Spang & Co.	1,487	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	High Flux	0.310" (7.87mm)	6 nH	±8%	Ungapped	-	14	-	17.9	5.99	-	107.0	Uncoated	0.125" (3.18mm)	-	-
RM10/I-3C91 FERRITE CORE RM 3C91 2PC SET Ferroxcube	1,706	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 10 x 1	3C91	-	-	±25%	Ungapped	2020.0	-	0.462	44.6	96.6	89.1	4310.0	Uncoated	0.729" (18.60mm)	1.122" (28.50mm)	0.531" (13.50mm)
RM10/I-3C94 FERRITE CORE RM 3C94 2PC SET Ferroxcube	3,068	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 10 x 1	3C94	-	-	±25%	Ungapped	1650.0	-	0.462	44.6	96.6	89.1	4310.0	Uncoated	0.729" (18.60mm)	1.122" (28.50mm)	0.531" (13.50mm)
RM10/I-3C90 Ferrite Misc Ferroxcube	1,224	-	RFQ	Datasheet	-	Bulk	Active	RM	RM 10 x 1	3C90	-	100 nH	±3%	Gapped	37.0	-	0.462	44.6	96.6	89.1	4310.0	Uncoated	0.729" (18.60mm)	1.122" (28.50mm)	0.531" (13.50mm)
EP20-3F3 Ferrite Misc Ferroxcube	3,915	-	RFQ	Datasheet	-	Bulk	Active	EP	EP 20	3F3	-	3.55 µH	±25%	Ungapped	1480.0	-	0.52	41.1	78.7	60.8	3230.0	Uncoated	0.421" (10.40mm)	0.945" (24.00mm)	0.591" (15.00mm)
ER18/3.2/10-3C97-S FERRITE CORE ER 3C97 2PC SET Ferroxcube	2,903	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 18 x 3.2 x 10	3C97	-	-	±25%	Ungapped	-	-	0.73	22.1	30.2	30.1	667.0	Uncoated	0.382" (9.70mm)	0.709" (18.00mm)	0.124" (3.15mm)
ER18/3.2/10-3F36-S FERRITE CORE ER 3F36 2PC SET Ferroxcube	1,771	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 18 x 3.2 x 10	3F36	-	-	±25%	Ungapped	-	-	0.73	22.1	30.2	30.1	667.0	Uncoated	0.382" (9.70mm)	0.709" (18.00mm)	0.124" (3.15mm)
ER18/3.2/10-3F46-S FERRITE CORE ER 3F46 2PC SET Ferroxcube	3,145	-	RFQ	Datasheet	-	Bulk	Active	ER	ER 18 x 3.2 x 10	3F46	-	-	±25%	Ungapped	-	-	0.73	22.1	30.2	30.1	667.0	Uncoated	0.382" (9.70mm)	0.709" (18.00mm)	0.124" (3.15mm)
B65807J0000R092 FERRITE CORE RM N92 EPCOS - TDK Electronics	1,414	-	RFQ	Datasheet	RM6	Box	Active	RM	RM 6	N92	-	-	-	-	-	1500	0.78	28.6	36.6	31.0	1050.0	Uncoated	0.246" (6.25mm)	0.701" (17.90mm)	0.323" (8.20mm)
B65517W0000R095 FERRITE CORE N95 EPCOS - TDK Electronics	4,635	-	RFQ	Datasheet	P9/5	Box	Active	-	P 9 x 5	N95	0.366" (9.30mm)	-	-	-	-	3000	1.13	13.4	11.9	9.3	159.0	Uncoated	0.106" (2.70mm)	-	-
E42/21/20-3F36-G200 FERRITE CORE E 3F36 Ferroxcube	1,933	-	RFQ	Datasheet	-	Bulk	Active	E	E 42 x 21 x 20	3F36	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.827" (21.00mm)	1.693" (43.00mm)	0.787" (20.00mm)
B65803A0025A001 RM4 K 1 25 +3% -3 EPCOS - TDK Electronics	2,762	-	RFQ	Datasheet	B65803	Tape & Reel (TR)	Active	RM	RM 4	K1	-	25 nH	±3%	Ungapped	37.8	-	1.9	21.0	11.0	-	231.0	Uncoated	0.177" (4.50mm)	0.433" (11.00mm)	0.181" (4.60mm)
HF42616UG DOUBLE SLAB CP W/HOLE Magnetics, a division of Spang & Co.	3,011	-	RFQ	Datasheet	-	Bulk	Active	ER	-	F	-	4.6 µH	±25%	Ungapped	-	3000	-	39.0	72.1	62.7	2810.0	Uncoated	0.317" (8.05mm)	1.004" (25.50mm)	0.673" (17.09mm)
RP42316A400 GAPPED RM CORE Magnetics, a division of Spang & Co.	1,769	-	RFQ	Datasheet	-	Bulk	Active	RM	-	P	-	400 nH	-	Ungapped	-	2500	-	35.5	52.0	-	1850.0	Uncoated	0.646" (16.40mm)	0.913" (23.20mm)	0.425" (10.80mm)

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.