Ferroxcube
Material specification
3E55 SPECIFICATIONS
A high permeability material optimized for a very low
Total Harmonic Distortion factor (THD/µ
a
) over the full
operating temperature range of DSL wideband
transformers.
SYMBOL
µ
i
B
CONDITIONS
25
°C; ≤10
kHz;
0.25 mT
25
°C;
10 kHz;
1200 A/m
80
°C;
10 kHz;
1200 A/m
tanδ/µ
i
25
°C;
10 kHz;
0.25 mT
25
°C;
30 kHz;
0.25 mT
η
B
ρ
T
C
density
25
°C;
10 kHz;
1.5 to 3 mT
DC; 25
°C
VALUE
10000
±
20%
≈
370
≈
220
≤
10
×
10
−6
≤
30
×
10
−6
≤
0.2
×
10
−3
≈
0.1
≥
100
≈
5000
T
−1
Ωm
°C
kg/m
3
10
10
2
2
3E55
handbook, halfpage
10
5
CBW433
3E55
µ'
s ,
µ''
s
10
4
µ'
s
UNIT
mT
10
3
µ''
s
10
1
1
f (MHz)
10
Fig.1
Complex permeability as
a function of frequency.
handbook, halfpage
20000
µ
i
CBW434
3E55
handbook, halfpage
500
CBW435
B
(mT)
400
25 oC
80 oC
3E55
15000
300
10000
200
5000
100
0
50
0
50
150
T (
o
C)
250
25
0
25
50
150
H (A/m)
250
Fig.2
Initial permeability as a
function of temperature.
Fig.3 Typical B-H loops.
2008 Sep 01
157
Ferroxcube
Material specification
3E55
−115
THD/µ
a
(dB)
−120
MFW062
-110
THD/µ
a
(dB)
-115
MFW071
3E55
3E55
-120
−125
-125
−130
-130
−135
20
-135
0
40
T (
o
C)
80
1
10
B (mT)
100
Fig.4 THD-factor as a function of temperature
(B =10 mT, f = 25 kHz).
Fig.5 THD-factor as a function of flux density
(f = 25 kHz, T = 25
°C).
-110
THD/µ
a
(dB)
-115
MFW072
3E55
-120
-125
-130
-135
1
10
f (kHz)
100
Fig.6 THD-factor as a function of frequency
(B =10 mT, T = 25
°C).
2008 Sep 01
158
Ferroxcube
Material specification
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
Preliminary
specification
Product specification
PRODUCT
STATUS
Development
DEFINITIONS
3E55
This data sheet contains preliminary data. Ferroxcube reserves the right to
make changes at any time without notice in order to improve design and
supply the best possible product.
This data sheet contains final specifications. Ferroxcube reserves the right
to make changes at any time without notice in order to improve design and
supply the best possible product.
Production
DISCLAIMER
Life support applications
These products are not designed for use in life support appliances, devices, or systems
where malfunction of these products can reasonably be expected to result in personal injury. Ferroxcube customers
using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Ferroxcube
for any damages resulting from such application.
PRODUCT STATUS DEFINITIONS
STATUS
Prototype
Design-in
Preferred
Support
INDICATION
DEFINITION
These are products that have been made as development samples for the purposes of
technical evaluation only. The data for these types is provisional and is subject to
change.
These products are recommended for new designs.
These products are recommended for use in current designs and are available via our
sales channels.
These products are
not
recommended for new designs and may not be available
through all of our sales channels. Customers are advised to check for availability.
2008 Sep 01
159
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