Fe-based nano-crystalline iron cores with low Br
Product Description
In case of high-power inverter power supply single-ended pulse transformer, the iron core works in the first quadrant, thus to get a big working magnetic induction △ B, the transformer iron core is required with a low high-frequency loss, high saturation magnetic induction Bs, and low residual magnetic induction Br. Therefore, the process of horizontal magnetic heat treatment is used for nano-crystalline alloy and the iron core with low remanent magnetic and constant magnetic permeability properties can be obtained.
Features:
It has a high saturation magnetic flux density, low iron loss and coercive force and it has better soft magnetic properties compared with the usual ferrite.
Application areas:
It can be used for the main transformer of the high-power switching power supply (inverter power supply, X-ray power supply, laser power supply, power supply for communications equipment, UPS, and electroplating power supply), single-ended pulse transformer, ISDN signal transformers, and common mode vibration flow circle.
The comparison of performance parameters of Fe-based nano-crystalline and soft magnetic ferrite :
|
Basic magnetic parameters
|
Nano-crystalline Iron Core
|
Soft Magnetic Ferrite
|
|
Saturation magnetic flux density (T)
|
1.25
|
0.5
|
|
Remanence ratio (T)
|
＜0.20
|
0.2
|
|
Permeability (20kHz)
(Gs / Oe)
|
＞20000
|
2000
|
|
Coercivity (A / m)
|
＜1.60
|
6
|
|
Curie Temperature (℃)
|
570
|
<200
|
|
Iron loss (20kHz, 0.2T)
(w / kg)
|
≤4.0
|
-------
|
|
Iron loss (20kHz, 0.5T)
(w / kg)
|
≤35
|
-------
|
|
Iron loss (20kHz, 0.3T)
(w / kg)
|
≤40
|
-------
|
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