TDK EE320x250x20 MATERIAL CHARACTERISTICS Typical, CORE LOSS vs. TEMPERATURE CHARACTERISTICS

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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)

Material					PE22	PC40
Initial permeability		∝i	[23°C]		1800	2300
Curie temperature		Tc		°C	>200	>200
Saturation magnetic flux density		Bs	[23°C]	mT	510	500
H=1194A/m			[100°C]		410	380
Remanent flux density		Br	[23°C]	mT	140	125
Coercive force		Hc	[23°C]	A/m	16	15
Core loss	25kHz, 200mT	Pcv	[100°C]	kW/m3	80	70
	100kHz, 200mT				520	420
Electrical resistivity		ρ		Ω • m	3	6.5
Approximate density		dapp		kg/m3	4.8⋅ 103	4.8⋅ 103
Thermal expansion coefficient		α		1/K	12⋅ 10–6	12⋅ 10–6
Thermal conductivity		κ		W/mK	5	5
Specific heat		Cp		J/kg • K	600	600
Bending strength		δb3		N/m2	9⋅ 107	9⋅ 107
Young’s modulus		E		N/m2	1.2⋅ 1011	1.2⋅ 1011
Magnetostriction		λs			–0.6⋅10–6	–0.6⋅10–6

• 1(mT)=10(G),1(A/m)=0.012566(Oe)

CORE LOSS vs. TEMPERATURE CHARACTERISTICS

Pcv(kW/m3)

200

25kHz-200mT

PE22

150

PC40

100

50

0

0 20 40 60 80 100 120 Temperature(˚C)

Pcv(kW/m3)

800

600

400

0

0

PE22

100kHz-200mT

PC40

20 40 60 80 100 120 Temperature(˚C)

• All specifications are subject to change without notice.

002-01 / 20071116 / e16_1