Ferroxcube
Material specification
3E9 SPECIFICATIONS
A high permeability material optimized for small toroids
used in miniaturized wideband transformers and delay
lines.
CONDITIONS
µ
i
B
25
°C; ≤10
kHz;
0.25 mT
25
°C;
10 kHz;
1200 A/m
80
°C;
10 kHz;
1200 A/m
25
°C;
10 kHz; 0.25 mT
25
°C;
30 kHz; 0.25 mT
25
°C;
10 kHz;
1.5 to 3 mT
DC; 25
°C
VALUE
(1)
20000
±
20%
10
4
3E9
10
5
µ'
s ,
µ''
s
MFW042
3E9
µ'
s
UNIT
≈
380
≈
210
≤
10
×
≤
50
×
10
−6
≤
1
×
10
−3
≈
0.1
≥
100
≈
5000
10
−6
mT
µ''
s
10
3
tanδ/µ
i
η
B
ρ
T
C
density
Note
T
−1
Ωm
°C
kg/m
3
10
10
2
2
10
1
1
f (MHz)
10
1. Measured on sintered, non-ground ring cores of
dimensions Ø14
×
Ø9
×
5 which are not subjected to
external stresses.
Fig.1
Complex permeability as
a function of frequency.
handbook, halfpage
40000
µ
i
30000
MFW043
handbook, halfpage
500
MFW044
3E9
B
(mT)
400
25 oC
80 oC
3E9
300
20000
200
10000
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
173
Ferroxcube
Material specification
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
Preliminary
specification
Product specification
PRODUCT
STATUS
Development
DEFINITIONS
3E9
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
175
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