TDK Ferrites EE320x250x20, PE22, PC40, PE90 Summary Manual
• All specifications are subject to change without notice.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
Large Size Ferrite Cores for High Power
Summary
Issue date: November 2010
(1/7)
003-02 / 20101108 / e16_1.fm
• All specifications are subject to change without notice.
Large Size Ferrite Cores for High Power
Summary
Nowadays, more and more high-frequency circuits are being used in industrial equipment as well as consumer equipment. With the use of
higher frequencies, silicon steel sheets have become unsuitable for magnetic material used in transformers. Ferrite, its substitute, delivers
reduced core loss at high frequencies and is the optimum material for high-power requirements.
To meet these various demands, we at TDK have employed our ferrite development technologies accumulated over the years and
advanced production technologies to offer large, high-quality cores for high-frequency, high-power power supplies.
In the following information, introduce ferrite cores that used PE22, PC40 and PE90 materials having superior magnetic characteristics.
APPLICATIONS
Transformer
High frequency inductive heater EE320x250x20
Uninterruptible Power Supply System(UPS)
CATV’s power supply
Photovoltaic power generation
Power supply of communications station
EC70,90,120
Electrical vehicle
PQ78,107
Automated warehouse, conveyor machine
Current sensor
Reactor choke
General purpose inverter • Air conditioner
• Fun
• Pump
• Printing press
• Packing machine
• Machines for food industry
• Drier
• Compressor of freezer
• Textile machine
• Woodworking machine
• Medical machine
UU79x129x31
Trains
UU79x129x31
(2/7)
003-02 / 20101108 / e16_1.fm
• All specifications are subject to change without notice.
FEATURES
• Large size ferrite cores developed for reactors and transformers used in high power units.
• Please contact us for machinability of non-standard special forms.
MATERIAL CHARACTERISTICS (Typical)
• 1(mT)=10(G),1(A/m)=0.012566(Oe)
CORE LOSS vs. TEMPERATURE CHARACTERISTICS
Material PE22 PC40 PE90
Initial permeability µi [23°C] 1800 2300 2200
Curie temperature Tc °C >200 >200 >250
Saturation magnetic flux density
H=1194A/m
Bs
[23°C]
[100°C]
mT
510
410
500
380
530
430
Remanent flux density Br [23°C] mT 140 125 170
Coercive force Hc [23°C]A/m161513
Core loss
25kHz, 200mT
Pcv
[90°C]
kW/m
3
79 64 60
[100°C]
80 70 68
100kHz, 200mT 520 420 400
Electrical resistivity ρΩ • m 3.0 6.5 6.0
Approximate density dapp kg/m
3
4.8×10
3
4.8×10
3
4.9×10
3
Thermal expansion coefficient α 1/K 12×10
–6
12×10
–6
12×10
–6
Thermal conductivity κ W/mK555
Specific heat C
p J/kg • K 600 600 600
Bending strength δ
b3 N/m
2
9×10
7
9×10
7
9×10
7
Young’s modulus E N/m
2
1.2×10
11
1.2×10
11
1.2×10
11
Magnetostriction λs –0.6×10
–6
–0.6×10–6–0.6×10
–6
150
200
100
50
0
120100806040200
Temperature(˚C
)
P
cv
(
kW/m
3
)
PC40
PE90
PE22
25kHz-200mT
900
700
500
300
120100806040200
Temperature(˚C
)
P
cv
(
kW/m
3
)
PC40
PE22
PE90
100kHz-200mT
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