Ferrite Cores

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Mfr Part #	Quantity Available	Price	Series	Package	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

B65811J0000R087 FERRITE CORE RM 3.3UH N87 2PCS EPCOS - TDK Electronics	1,646 In Stock	1 : ¥22.02000 Box	RM8	Box	Active	RM	RM 8	N87	-	3.3 µH	-20%, +30%	Ungapped	1560	2200	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0250A087 FERRITE CORE RM 250NH N87 2PCS EPCOS - TDK Electronics	2,095 In Stock	1 : ¥23.12000 Box	RM8	Box	Active	RM	RM 8	N87	-	250 nH	±3%	Gapped	118	2200	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0400A087 FERRITE CORE RM 400NH N87 2PCS EPCOS - TDK Electronics	758 In Stock	1 : ¥23.12000 Box	RM8	Box	Active	RM	RM 8	N87	-	400 nH	±3%	Gapped	189	2200	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0250J041 FERRITE CORE RM 250NH N41 2PCS EPCOS - TDK Electronics	628 In Stock	1 : ¥27.63000 Box	RM8	Box	Active	RM	RM 8	N41	-	250 nH	±5%	Gapped	118	2800	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0000R049 FERRITE CORE RM 2.2UH N49 2PCS EPCOS - TDK Electronics	188 In Stock	1 : ¥28.48000 Box	RM8	Box	Active	RM	RM 8	N49	-	2.2 µH	-20%, +30%	Ungapped	1040	1500	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0250A048 FERRITE CORE RM 250NH N48 2PCS EPCOS - TDK Electronics	800 In Stock	1 : ¥36.98000 Bulk	RM8	Bulk	Active	RM	RM 8	N48	-	250 nH	±3%	Gapped	134	-	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811F0630J048 FERRITE CORE RM 630NH N48 2PCS EPCOS - TDK Electronics	1,548 In Stock	1 : ¥39.95000 Box	RM8	Box	Active	RM	RM 8	N48	-	630 nH	±5%	Gapped	338	-	0.68	35.1	52	-	1825	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0160A087 FERRITE CORE RM N87 2PCS EPCOS - TDK Electronics	1,008 In Stock	1 : ¥23.55000 Box	RM8	Box	Active	RM	RM 8	N87	-	-	-	Gapped	-	-	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0000R030 FERRITE CORE RM 5.7UH N30 2PCS EPCOS - TDK Electronics	2,095 In Stock	1 : ¥24.48000 Box	RM8	Box	Active	RM	RM 8	N30	-	5.7 µH	-20%, +30%	Ungapped	2690	4300	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0000R041 FERRITE CORE RM 4.1UH N41 2PCS EPCOS - TDK Electronics	828 In Stock	1 : ¥26.61000 Box	RM8	Box	Active	RM	RM 8	N41	-	4.1 µH	-20%, +30%	Ungapped	1940	2800	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J1600K041 FERRITE CORE RM 1.6UH N41 2PCS EPCOS - TDK Electronics	960 In Stock	1 : ¥27.63000 Box	RM8	Box	Active	RM	RM 8	N41	-	1.6 µH	±10%	Gapped	756	2800	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0160A041 FERRITE CORE RM 160NH N41 2PCS EPCOS - TDK Electronics	124 In Stock	1 : ¥27.63000 Box	RM8	Box	Active	RM	RM 8	N41	-	160 nH	±3%	Gapped	76	2800	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811J0000Y038 FERRITE CORE RM 12.5UH T38 2PCS EPCOS - TDK Electronics	588 In Stock	1 : ¥30.43000 Box	RM8	Box	Active	RM	RM 8	T38	-	12.5 µH	-30%, +40%	Ungapped	5910	2300	0.59	38	64	55	2430	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811D0000R048 FERRITE CORE RM 2.9UH N48 2PCS EPCOS - TDK Electronics	522 In Stock	1 : ¥35.36000 Box	RM8	Box	Active	RM	RM 8	N48	-	2.9 µH	-20%, +30%	Ungapped	1550	-	0.68	35.1	52	-	1825	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811D0630J048 FERRITE CORE RM 630NH N48 2PCS EPCOS - TDK Electronics	481 In Stock	1 : ¥41.48000 Cut Tape (CT) 200 : ¥20.54280 Tape & Box (TB)	RM8	Cut Tape (CT) Tape & Box (TB)	Active	RM	RM 8	N48	-	630 nH	±5%	Gapped	338	-	0.68	35.1	52	-	1825	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)
B65811D0400A048 FERRITE CORE RM 400NH N48 2PCS EPCOS - TDK Electronics	520 In Stock	1 : ¥36.98000 Box	RM8	Box	Active	RM	RM 8	N48	-	400 nH	±3%	Gapped	215	-	0.68	35.1	52	-	1825	Uncoated	0.324" (8.25mm)	0.913" (23.20mm)	0.433" (11.00mm)

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Ferrite Cores

Ferrite cores are a magnetic device used in the windings of transformers or other wound components. The chemical makeup of these devices help to prevent eddy currents. These are created in different form factors such as: E, toroid, ER, multi-hole, etc. and come in many different sizes. Key parameters are going to be the size, form factor or core type, and inductance factor.