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Data Sheet: Material Specification

This document provides specifications for Ferroxcube 4A11, a medium permeability nickel-zinc ferrite material intended for use in wideband EMI suppression and RF applications from 30-1000 MHz. Key specifications include: - Initial permeability of 850 ±20% at 25°C and 0.25 mT decreasing to 340 mT at 10 kHz and 1200 A/m and further decreasing to 230 mT at 100°C and 1200 A/m. - Core loss values of ≤ 100 x 10^-6 and ≤ 1000 x 10^-6 at 25°C, 1 MHz and 3 MHz respectively at 0.25 mT. - Resistivity of ≈ 105 Ωm

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112 views3 pages

Data Sheet: Material Specification

This document provides specifications for Ferroxcube 4A11, a medium permeability nickel-zinc ferrite material intended for use in wideband EMI suppression and RF applications from 30-1000 MHz. Key specifications include: - Initial permeability of 850 ±20% at 25°C and 0.25 mT decreasing to 340 mT at 10 kHz and 1200 A/m and further decreasing to 230 mT at 100°C and 1200 A/m. - Core loss values of ≤ 100 x 10^-6 and ≤ 1000 x 10^-6 at 25°C, 1 MHz and 3 MHz respectively at 0.25 mT. - Resistivity of ≈ 105 Ωm

Uploaded by

William Hein
Copyright
© © All Rights Reserved
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Supersedes data of September 2004 2008 Sep 01

FERROXCUBE
4A11
Material specification
2008 Sep 01 220
Ferroxcube
Material specification 4A11
4A11 SPECIFICATIONS
Medium permeability NiZn ferrite for use in wideband
EMI-suppression (30 - 1000 MHz) as well as RF
wideband and balun transformers.
SYMBOL CONDITIONS VALUE UNIT

i
25 C; 10 kHz;
0.25 mT
850 20%
B 25 C; 10 kHz;
1200 A/m
340 mT
100 C; 10 kHz;
1200 A/m
230
tan/
i
25 C; 1 MHz;
0.25 mT
100 10
6
25 C; 3 MHz;
0.25 mT
1000 10
6
DC; 25 C 10
5
m
T
C
125 C
density 5100 kg/m
3
Fig.1 Complex permeability as
a function of frequency.
MBW309
1 10 10
2
10
4
f (MHz)
' ,
s
''
s
10
3
10
2
10
10
1
4A11
''
s
'
s
Fig.2 Initial permeability as a
function of temperature.
2000
50 50 250
0
MBW310
150
500
1000
1500

i
T ( C)
o
4A11
Fig.3 Typical B-H loops.
handbook, halfpage
50 100 1000
500
0
MBW311
500
100
200
300
400
50 0
H (A/m)
B
(mT)
4A11
25
o
C
100
o
C
2008 Sep 01 221
Ferroxcube
Material specification 4A11
DATA SHEET STATUS DEFINITIONS
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
DATA SHEET
STATUS
PRODUCT
STATUS
DEFINITIONS
Preliminary
specification
Development 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.
Product specification Production 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.
STATUS INDICATION DEFINITION
Prototype
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.
Design-in These products are recommended for new designs.
Preferred
These products are recommended for use in current designs and are available via our
sales channels.
Support
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.

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