Nanocrystalline Cores

Magnetics nanocrystalline cores combine low core loss and high permeability with the thermal stability needed for compact, high-performance designs. With stable magnetic properties and efficient heat control, these cores excel in EMI suppression, current sensing, UPS systems, EV charging, power line input and output filters. This makes them exceptionally effective in components like common mode chokes, current transformers and magnetic amplifiers (magamps).

Key Characteristics

Composition: Fe•Si•Nb•Cu•B
Shapes: Toroid, Cut Toroid, Slotted Toroid, Cut Core
Sizes: 5 mm to 145 mm
Flux Density (T): 1.25
Coating Color: Blue, Green

Nanocrystalline Solutions by Magnetics

Magnetics manufactures a full range of nanocrystalline cores, including toroids, cut cores and busbar geometries, and supports tailored configurations beyond standard offerings. With rapid sampling, low minimum order quantities and engineering support available at every stage, you can explore both standard and custom solutions for performance-critical applications.

View Nanocrystalline Material Property Curves including Impedance vs. Frequency, Permeability vs. Temperature and B-H Loop.

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Nanocrystalline Part Number Identification

How To Order: Magnetics Tape Wound Cores

Nanocrystalline Toroids
Nanocrystalline Cut Cores

Part Number	Core Area cm²	Path Length cm	Bare OD mm	Bare ID mm	Bare HT mm	Boxed OD max mm	Boxed ID min mm	Boxed HT max mm	Digikey Stock
Part Number	Core Area cm²	Path Length cm	Bare OD mm	Bare ID mm	Bare HT mm	Boxed OD max mm	Boxed ID min mm	Boxed HT max mm	Digikey Stock
CMC012008005H	0.07	3.1	12.0	8.0	4.5	14.3	6.6	7.0
CMC013010005H	0.07	3.5	13.0	9.5	5.0	14.7	7.6	7.0
CMC016010006H	0.15	4.10	16.0	10.0	6.0	17.8	8.2	7.9
CMC020012008H	0.27	5.02	20.0	12.0	8.0	22.6	10.6	10.0	☑
CMC025016010H	0.37	6.43	25.0	16.0	10.0	27.5	13.8	12.6	☑
CMF025020010H	0.21	7.07	25.0	20.0	10.0	27.5	18.0	13.0
CMC030020010H	0.41	7.85	30.0	20.0	10.0	33.0	17.6	13.2	☑
CMC030020012H	0.49	7.9	30.0	20.0	12.0	34.0	18.0	15.2	☑
CMC030020015H	0.63	7.9	30.0	20.0	15.0	33.6	17.7	17.8	☑
CMF032020015H	0.73	8.2	32.0	20.0	15.0	34.5	17.6	18.2
CMC040025015H	0.92	10.2	40.0	25.0	15.0	44.2	21.6	18.9	☑
CMC040032015H	0.50	11.3	40.0	32.0	15.0	45.5	28.5	18.8	☑
CMF045030015H	0.92	11.8	45.0	30.0	15.0	48.2	27.6	17.9
CMF050032015H	1.10	12.9	50.0	32.0	15.0	53.9	28.9	18.7
CMF065050025H	1.57	18.0	65.0	50.0	25.0	68.3	46.8	28.9
CMF090060020H	2.50	23.5	90.0	60.0	20.0	94.0	55.0	24.0
CMC100080020H	1.57	28.2	100.0	80.0	20.0	104.5	75.8	23.4
CMC105075030H	3.69	28.3	105.0	75.0	30.0	109.4	70.6	34.5
CMC110080040H	4.92	29.8	110.0	80.0	40.0	116.0	75.2	46.9

Part Number	Cross Section cm²	Path Length cm	Height mm	Width mm	Length mm
PTB051028015HCC	1.24	10.7	15.0	28.0	51.0
PTB053031020HCC	1.6	12.8	20.0	31.0	53.0
PTB053035020HCC	2.0	11.7	20.0	35.0	53.0
PTB063036020HCC	1.8	15.4	20.0	35.5	63.0
PTB063036025HCC	2.3	15.1	25.0	35.5	62.5
PTB073036030HCC	2.8	16.2	30.0	35.5	73.0
PTB084042025HCC	3.6	17.9	25.0	42.0	84.0
PTB082041030HCC	3.5	17.5	30.0	41.0	82.0
PTB105054030HCC	4.4	23.2	30.0	53.5	105.0
PTB122064035HCC	6.1	26.7	35.0	63.5	122.0