COMMON MODE CHOKE
Contribute to size and weight reduction
FINEMET® has higher permeability compare to standard Mn-Zn ferrite, which offers high impedance to suppress common mode choke noise.
Table 1 : Permeability of FINEMET® and ferrite
| Relative permeability μr | ||
| f=10kHz | f=100kHz | |
| Nanocrystalline soft magnetic material FINEMET® FT-3K50T |
50,000 | 31,000 |
| Mn-Zn ferrite μ 5000 material |
5,000 | 5,000 |
Example of comparison data of common mode chokes with same characteristics
Comparison of volume and weight :
spec 250VAC 20A 3mH at 100kHz
| FT-3K50T | Mn-Zn | |
| Volume | 24cm3 (0.55) |
44cm3 (1) |
| Weight | 55g (0.53) |
104g (1) |
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