회사소개 생산품목 제품정보 기술자료 고객지원  
  Material Proprety    /    Design Formula    /    Magnetic Characteristics    /    Core Loss  
 Material Proprety
 Design Formula
 Magnetic Characteristics
 Core Loss
HOME > 기술자료 > Material Proprety
       
   
MENU
     General Material Property
     Resonant Circuit
     Dimension Tolerance
     Characteristics
     Major Application
     Availability of Materials, Shapes and Sizes
     Temperature Effects
 
   
   
Iron Powder
Core
Material
Code
Material Code
Micrometals
Reference
Permeability (μi)
Temp.Coef.
of Permeability (+ppm/℃)
AL Value
Tolerance
Color

Iron
Core

A
B
C
26
52
40
75
75
60
825
650
950
±10%
±10%
±10%
Yellow
Green
White

RF
Carbonyl
Core

E
F
G
H
J
K
L
M
N
2
6
8/90
17
3
1
18
10
14
10
8.5
35
4
35
20
55
6
14
95
35
255
50
370
280
385
150
150
±10%
±10%
±10%
±10%
±10%
±10%
±10%
±10%
±10%
Red
Orange
Yellow/Red
Blue/Yellow
Gray
Blue
Green/Red
Black
Black/Red
 
   
   
Iron Powder
Core
Material
Code
Range

Iron
Core

A
B
C
100kHz
500kHz
100kHz

RF
Carbonyl
Core

E
F
J
G
H
K
M
250kHz~10MHz
3MHz~40MHz
20kHz~1MHz
20kHz~1MHz
20MHz~200MHz
150kHz~3MHz
15MHz~100MHz
 
   
   
Toroids
OD(mm)
ID(mm)
HT(mm)
C03 ~ C06
C07 ~ C19
C21 ~ C33
C34 ~ C57
±0.3
±0.5
±0.6
±0.75
±0.3
±0.5
±0.6
±0.75
±0.3
±0.5
±0.6
±0.75
 
   
    Because of distributed air gap properties, Iron powder core is well suitable to the application of energy storage inductors and have a excellent inductance stability under high DC bias condition.
Owing to its low cost, Iron powder core can be an alternative choice to MPP, High Flux or Sendust core.
 
    Excellent Frequency Characteristics(Maximum 200MHz)
Excellent Inductance stability under high DC bias condition.
Good temperature stability.
Inductors for High "Q"
Relatively high Saturation Flux Density
Large energy storage capacity.
Low core loss
Cost effecitive design. 
 
   
   
Iron core
RF carbonyl core
Output Chokes for switching mode
power supplies(SMPS)
Conducted EMI noise filters(AM range)
Frequency control circuit by SCR.
Pulse transformers.
DC output / input filters.
Light dimmer chokes.
Precision Inductors.
 
Desk top PC and Notebook PC
VRM(Voltage Reguator Module) Circuit → 550nH
Digital Audio Amp(Low pass filter, Band pass filter)
Digital car Amp(D-Clss)→ Low pass filter
Hometheater DVD Amp(5.1CH) → Low pass filter
PDP TV(Resonant Circuit)
LCD Backlight Inverter(Resonant Circuit)
High Power UPS(Choke Coil)
Battery Charge(Choke Coil
 
   
    In addition to listed part no. in this catalog. CORE Electronics Co.,LTD. can produce various shapes
and sizes according to customer's request. Also we can produce VE(Value Engineering) type
product for cost-effective design.
 
   
    General operating temperature of Core Electronics' iron powder core is from -55℃ to +125℃.
When iron power cores are exposed to elevated temperature, a permanent decrease of inductance
  and Q factor wilI be gradually occurred.
Degree of these changes depends on time, temperature, core size, frequency and flux density.
  High temperature applcation dominated mainly by outstanding core loss is not recommended
  for continuously proper operation in the circuitries, i.e) higher frequency, comparatively large current
  AC chokes.
Continuous operation over 125℃ core temperature may cause permanent damage of insulation of iron
  powder itself and coating material. This may cause decrease of inductance and increase of
  core loss etc.
 
       
/개인정보취급방침/