Ferrite Cores

Compare the current Ferrite Cores Magnetics - Transformer, Inductor Components selection by manufacturer, stock status, datasheet and technical parameters. Use these details to narrow the list to parts that match your design, maintenance or purchasing requirements.

For a specific MPN, package, electrical rating or quantity requirement, send the details to EGOO. We can help confirm availability, quotation and alternative sourcing options.

Mfr. Part #	Availability	Price	Quantity	Datasheet	Series	Packaging	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
0055147A2 MPP 200 PERM GREY 150 SIZE Magnetics, a division of Spang & Co.	3,333	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.155" (3.94mm)	56 nH	±8%	Ungapped	-	200	-	9.42	2.11	-	19.9	Uncoated	0.100" (2.54mm)	-	-
C055144A2 MPP 173 PERM GREY 150 SIZE Magnetics, a division of Spang & Co.	1,133	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.180" (4.57mm)	48 nH	±8%	Ungapped	-	173	-	9.42	2.11	-	19.9	Coated	0.125" (3.18mm)	-	-
SF43019A250 GAPPED ROUND-SLAB CORE W/HOLE Magnetics, a division of Spang & Co.	4,309	-	RFQ	Datasheet	-	Bulk	Active	EQ	-	F	-	250 nH	-	Ungapped	-	3000	-	45.6	123.0	-	5610.0	Uncoated	0.740" (18.80mm)	1.181" (30.00mm)	0.800" (20.32mm)
C055015A2 MPP 300 PERM GREY 020 SIZE Magnetics, a division of Spang & Co.	2,421	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.275" (6.99mm)	120 nH	±8%	Ungapped	-	300	-	13.6	4.7	-	64.0	Coated	0.135" (3.43mm)	-	-
0J44920TC TOROID UNCOATED Magnetics, a division of Spang & Co.	2,485	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	J	1.933" (49.10mm)	6.065 µH	±20%	Ungapped	-	5000	-	123.2	135.4	-	16676.0	Uncoated	0.626" (15.90mm)	-	-
0055281AY MPP 060 PERM AY 280 SIZE Magnetics, a division of Spang & Co.	3,401	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.380" (9.65mm)	25 nH	±8%	Ungapped	-	60	-	21.8	7.52	-	164.0	Uncoated	0.125" (3.18mm)	-	-
00K5530E040 KOOL MU 5530 E CORE Magnetics, a division of Spang & Co.	4,503	-	RFQ	Datasheet	-	Bulk	Active	E	-	Kool Mu	-	187 nH	±8%	Ungapped	-	40	-	123.0	417.0	-	51300.0	Uncoated	1.085" (27.56mm)	2.160" (54.86mm)	0.969" (24.61mm)
C055120A9 MPP 125 PERM GREY 120 SIZE Magnetics, a division of Spang & Co.	2,245	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.695" (17.65mm)	72 nH	±8%	Ungapped	-	125	-	41.2	19.2	-	791.0	Coated	0.295" (7.49mm)	-	-
C055139A2 MPP 147 PERM GREY 140 SIZE Magnetics, a division of Spang & Co.	4,716	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.165" (4.19mm)	31 nH	±8%	Ungapped	-	147	-	8.06	1.3	-	10.5	Coated	0.085" (2.16mm)	-	-
0055134A2 MPP 173 PERM GREY 140 SIZE Magnetics, a division of Spang & Co.	3,847	-	RFQ	Datasheet	-	Bulk	Active	Toroid	-	MPP	0.140" (3.56mm)	36 nH	±8%	Ungapped	-	173	-	8.06	1.3	-	10.5	Uncoated	0.060" (1.52mm)	-	-

Ferrite Cores FAQ

How can I narrow the current Ferrite Cores selection?

Use the available manufacturer and technical filters to compare matching parts by specifications, stock status, pricing and datasheet information.

Can EGOO help source hard-to-find or obsolete Ferrite Cores parts?

Yes. Send the manufacturer part number and required quantity to our sourcing team for availability, lead-time and alternative sourcing support.

Can I request a quotation for a BOM or small-batch requirement?

Yes. EGOO supports BOM sourcing, prototype quantities and small-batch purchasing. Provide your part list and quantities for a quotation review.

What information should I provide when requesting a quote?

Please provide the target part number, manufacturer, quantity and any required date code, package or delivery requirements so our team can respond more accurately.