Ferrite Cores

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Core Type	Supplier Device Package	Material	Diameter	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

B66417G0000X187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	4,899 In Stock	1 : ¥6.04000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N87	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
B66417U0160K187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	3,459 In Stock	1 : ¥6.29000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N87	-	-	Gapped	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
B66417G0000X197 FERRITE CORE EFD N97 1PC EPCOS - TDK Electronics	4,265 In Stock	1 : ¥6.89000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N97	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
EFD20/10/7-3F36 FERRITE CORE EFD 3F36 Ferroxcube	5,294 In Stock	1 : ¥7.82000 Bulk	-	Bulk	Active	EFD	EFD 20 x 10 x 7	3F36	-	-	-	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
EFD25/13/9-3C96 FERRITE CORE EFD 3C96 Ferroxcube	5,408 In Stock	1 : ¥9.95000 Bulk	-	Bulk	Active	EFD	EFD 25 x 13 x 9	3C96	-	-	-	-	-	-	-	-	-	-	Uncoated	0.492" (12.50mm)	0.984" (25.00mm)	0.358" (9.10mm)
B66417G0000X149 FERRITE CORE EFD N49 1PC EPCOS - TDK Electronics	2,551 In Stock	1 : ¥6.12000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N49	-	-	Ungapped	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
B66417U0100K187 FERRITE CORE EFD N87 1PC EPCOS - TDK Electronics	412 In Stock	1 : ¥4.93000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N87	-	-	Gapped	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
B66417U0250K187 FERRITE CORE EFD N87 EPCOS - TDK Electronics	841 In Stock	1 : ¥6.29000 Box	EFD20/10/7	Box	Active	EFD	EFD 20 x 10 x 7	N87	-	±10%	Gapped	300.0	2200	1.52	47.0	31.0	31.0	1460.0	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
EFD20/10/7-3C95 FERRITE CORE EFD 3C95 Ferroxcube	0 In Stock Check Lead Time	7,200 : ¥3.03523 Bulk	-	Bulk	Active	EFD	EFD 20 x 10 x 7	3C95	-	-	-	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.262" (6.65mm)	0.262" (6.65mm)
EFD20/10/7-3C96-A100 FERRITE CORE EFD 3C96 Ferroxcube	0 In Stock Check Lead Time	7,200 : ¥3.12002 Bulk	-	Bulk	Active	EFD	EFD 20 x 10 x 7	3C96	-	-	-	-	-	-	-	-	-	-	Uncoated	0.394" (10.00mm)	0.787" (20.00mm)	0.262" (6.65mm)
EFD25/13/9-3C95 FERRITE CORE EFD 3C95 Ferroxcube	0 In Stock Check Lead Time	4,480 : ¥4.88556 Bulk	-	Bulk	Active	EFD	EFD 25 x 13 x 9	3C95	-	-	-	-	-	-	-	-	-	-	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.