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

B66421G0000X187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	5,059 In Stock	1 : ¥10.23000 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N87	-	-	Ungapped	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421U0315K187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	1,921 In Stock	1 : ¥10.20000 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N87	-	-	Gapped	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421U0250K187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	3,041 In Stock	1 : ¥10.71000 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N87	-	-	Gapped	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421U0160K187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	1,267 In Stock	1 : ¥10.71000 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N87	-	-	Gapped	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421G0000X197 FERRITE CORE EFD N97 1PC EPCOS - TDK Electronics	59 In Stock	1 : ¥8.67000 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N97	-	-	Ungapped	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421G0000X130 FERRITE CORE EFD N30 EPCOS - TDK Electronics	0 In Stock Check Lead Time	2,600 : ¥4.43922 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N30	-	-	-	4300	0.98	57	58	57	3310	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421G0000X192 FERRITE CORE EFD N92 EPCOS - TDK Electronics	0 In Stock Check Lead Time	2,600 : ¥5.55487 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N92	-	-	-	1500	0.98	57	58	57	3310	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66421U0090A197 FERRITE CORE EFD N97 EPCOS - TDK Electronics	0 In Stock Check Lead Time	2,600 : ¥5.97987 Box	EFD25/13/9	Box	Active	EFD	EFD 25 x 13 x 9	N97	-	-	Gapped	2300	0.98	57	58	57	3310	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)

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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.