Ferrite Cores

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Core Type	Supplier Device Package	Material	Diameter	Tolerance	Gap	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
B66281G0000X187 FERRITE CORE ELP N87 1PC EPCOS - TDK Electronics	12,017 In Stock	1 : £0.93000 Box	ELP14/3.5/5	Box	Active	ELP	ELP 14 x 3.5 x 5	N87	-	-	Ungapped	-	-	-	-	-	-	Uncoated	0.138" (3.50mm)	0.551" (14.00mm)	0.197" (5.00mm)
E18/4/10/R-3C95 FERRITE CORE E 3C95 Ferroxcube	6,605 In Stock	1 : £1.13000 Bulk	-	Bulk	Active	E	E 18 x 4 x 10	3C95	-	-	-	-	-	-	-	-	-	Uncoated	0.157" (4.00mm)	0.709" (18.00mm)	0.394" (10.00mm)
E64/10/50-3F36 FERRITE CORE E 3F36 Ferroxcube	1,143 In Stock	1 : £7.30000 Bulk	-	Bulk	Active	E	E 64 x 10 x 50	3F36	-	-	-	-	-	-	-	-	-	Uncoated	0.402" (10.20mm)	2.520" (64.00mm)	2.000" (50.80mm)
E13/7/4-3C94 FERRITE CORE E 3C94 Ferroxcube	5,979 In Stock	1 : £0.27000 Bulk	-	Bulk	Active	E	E 13 x 7 x 4	3C94	-	-	-	-	-	-	-	-	-	Uncoated	0.256" (6.50mm)	0.496" (12.60mm)	0.146" (3.70mm)
B66283G0000X187 FERRITE CORE ELP N87 1PC EPCOS - TDK Electronics	64,630 In Stock	1 : £1.09000 Box	ELP18/4/10	Box	Active	ELP	ELP 18 x 4 x 10	N87	-	-	Ungapped	-	-	-	-	-	-	Uncoated	0.157" (4.00mm)	0.709" (18.00mm)	0.394" (10.00mm)
9495202002 FERRITE CORE E 95 SET Fair-Rite Products Corp.	1,756 In Stock	1 : £0.77000 Bulk	-	Bulk	Active	E	-	95	-	±25%	Ungapped	3000	60.0	24.3	39.5	39.0	960.0	Uncoated	-	-	0.394" (10.00mm)
7878400321 FERRITE CORE E 78 SET Fair-Rite Products Corp.	612 In Stock	1 : £1.75000 Bulk	-	Bulk	Active	E	-	78	-	±25%	Ungapped	2300	33.0	26.1	79.0	79.0	2060.0	Uncoated	0.224" (5.70mm)	0.858" (21.80mm)	-
7878400721 FERRITE CORE E 78 SET Fair-Rite Products Corp.	149 In Stock	1 : £9.73000 Bulk	-	Bulk	Active	E	-	78	-	±25%	Ungapped	2300	14.0	70.0	518.0	515.0	36300.0	Uncoated	0.407" (10.34mm)	2.520" (64.00mm)	2.008" (51.00mm)

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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.