AMORPHOUS CHOKE COILS
AMORPHOUS CHOKE COILS
?Characteristics
comparison of magnetic materials
High
Fe-based Nano-crystalline permeability Power ferrite Permalloy Silicon steel
amorphous alloy
ferrite
Saturation magnetic
flux density Bs [mT]
Magnetic permeability
M
(10[kHz])
Core loss at high frequency
P
Fe
[mW/g]
Curie point
Tc [C]
Crystallization temperature
Tx [C]
Applications
1550
5000
40
400
550
1250
75000
20
570
-
500
12000
85
120
-
500
2300
52
230
-
High frequency
transformer
?Location
of amorphous alloy in soft magnetic materials
700
10000
97
350
-
Sensor
2000
700
325
750
-
Transformer for
commercial
frequency
Low frequency choke
Output smoothing Common-mode Broad-band
noise supression frequency
Common-mode
transformer
noize supression
Common-mode
High frequency
noise supression
transformer
Current
Pulse transformer transformer
Output smoothing
?Frequency
dependence of the core loss of amorphous
@
Comparison between ferrite choke and dust choke
Bm=100[mT], Magnetic flux: Sine wave
1000
?D.C.
bias of normal mode choke coil
Core loss P
Fe
[W/kg]
Dust choke
100
Fe-Si-Al
TM Series
Non-gap type
CM Series
Gap type
10
Ferrite choke
Mn-Zn, For power choke
1
1
10
100
1000
10000
Frequency f [kHz]
?Storage
power vs. Coil volume (Energy capacity)
1000
Amorphous
LNC462725G
LNC462715G
LNC372310G
LNC251510G
LNC221310G
EI60
EI50
EI40
EI30
?D.C.
bias of amorphous choke coil
@
Temperature dependence : Core temperature 25, 100c
Storage power Ln.In
2
[mH.A
2
]
100
10
LNC191305G
LNC211205G
LNC150905G
LNC130805G
1
EI25
EI22
Ferrite
0.1
1
10
100
1000
Coil volume Vcoil [cm
3
]
(1/1)
CAT. No. E1008E
CHEMI-CON [ UNITED CHEMI-CON, INC. ]
