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
B66453K0000X608 FERRITE CORE ELP PCS200 EPCOS - TDK Electronics	1,989 In Stock	1 : £0.99000 Bulk	I18/4/10	Bulk	Active	ELP	-	PC200	-	-	-	-	-	-	-	-	-	-	-	Uncoated	0.079" (2.00mm)	0.709" (18.00mm)	0.394" (10.00mm)
7895400421 FERRITE CORE PLANAR E/I SET Fair-Rite Products Corp.	1,138 In Stock	1 : £1.51000 Bulk	-	Bulk	Active	Planar E/I	-	95	-	8.7 µH	±25%	Ungapped	-	3000	27.0	35.2	130.0	129.0	4570.0	Uncoated	0.250" (6.35mm)	1.250" (31.75mm)	0.800" (20.32mm)
B66281K0000X197 FERRITE CORE I N97 EPCOS - TDK Electronics	5,180 In Stock	1 : £0.90000 Bag	I14/1.5/5	Bag	Active	I	I 14 x 1.5 x 5	N97	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.059" (1.50mm)	0.551" (14.00mm)	0.197" (5.00mm)
B66453K0000X197 FERRITE CORE I N97 EPCOS - TDK Electronics	1,308 In Stock	1 : £1.51000 Tray	I18/2/10	Tray	Active	I	I 18 x 2 x 10	N97	-	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.079" (2.00mm)	0.709" (18.00mm)	0.394" (10.00mm)
FR44310IC I-CORE - FLAT BACKS Magnetics, a division of Spang & Co.	704 In Stock	1 : £2.28000 Bulk	-	Bulk	Active	Planar E/I	-	R	-	9.541 µH	-	Ungapped	-	2300	-	50.4	229.0	229.0	11500.0	Uncoated	0.161" (4.10mm)	1.701" (43.20mm)	1.098" (27.90mm)
B66297KX197 FERRITE CORE EPCOS - TDK Electronics	0 In Stock Check Lead Time	1 : £8.79000 Bulk	B66297K	Bulk	Active	E	ELP 102 x 20 x 38	N97	-	9.6 µH	±25%	Ungapped	1740.0	-	0.227	121.2	534.2	524.5	67745.0	-	0.799" (20.30mm)	4.016" (102.00mm)	1.476" (37.50mm)
FR43208IC I-CORE WITH FLAT BACK Magnetics, a division of Spang & Co.	0 In Stock Check Lead Time	1,536 : £0.40628 Bulk	-	Bulk	Active	I	-	R	-	7.321 µH	-	Ungapped	-	2300	-	35.1	130.0	130.0	4560.0	Uncoated	0.125" (3.18mm)	1.250" (31.75mm)	0.800" (20.32mm)
FR45810IC I-CORE - NO CLIP SLOTS Magnetics, a division of Spang & Co.	0 In Stock Check Lead Time	480 : £1.36660 Bulk	-	Bulk	Active	Planar E/I	-	R	-	9.821 µH	-	Ungapped	-	2300	-	67.7	310.0	310.0	20800.0	Uncoated	0.161" (4.10mm)	2.300" (58.42mm)	1.500" (38.10mm)

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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.