Ferroxcube
Planar ER cores and accessories
CORE SETS
Effective core parameters
SYMBOL
Σ(I/A)
V
e
I
e
A
e
A
min
m
PARAMETER
core factor (C1)
effective volume
effective length
effective area
minimum area
mass of core half
VALUE
0.730
667
22.1
30.2
30.1
≈
1.6
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
18.0
±
0.35
15.6
±
0.3
13.5 min
6.2
±
0.15
1.6
±
0.1
ER18/3.2/10
3.15
±
0.1
9.7
±
0.2
R0.8 (8×)
Dimensions in mm.
MFP028
Fig.1 ER18/3.2/10 core half.
Core sets for general purpose transformers and power applications
Clamping force for A
L
measurements, 15
±
5 N.
GRADE
3C92
A
L
(nH)
160
±
3 %
250
±
5 %
400
±
8 %
1900
±
25 %
3C93
3C95
3C96
2200
±
25 %
3120
±
25 %
160
±
3 %
250
±
5 %
400
±
8 %
2400
±
25 %
3F3
3F35
2400
±
25 %
160
±
3 %
250
±
5 %
400
±
8 %
1800
±
25 %
3F4
3F45
1300
±
25 %
1300
±
25 %
µ
e
≈
93
≈
146
≈
232
≈
1100
≈
1270
≈
1810
≈
93
≈
146
≈
232
≈
1100
≈
1100
≈
93
≈
146
≈
232
≈
1100
≈
794
≈
794
AIR GAP
(µm)
≈
260
≈
150
≈
85
≈
0
≈
0
≈
0
≈
260
≈
155
≈
90
≈
0
≈
0
≈
260
≈
150
≈
85
≈
0
≈
0
≈
0
TYPE NUMBER
ER18/3.2/10-3C92-A160-S
ER18/3.2/10-3C92-A250-S
ER18/3.2/10-3C92-A400-S
ER18/3.2/10-3C92-S
ER18/3.2/10-3C93-S
ER18/3.2/10-3C95-S
ER18/3.2/10-3C96-A160-S
ER18/3.2/10-3C96-A250-S
ER18/3.2/10-3C96-A400-S
ER18/3.2/10-3C96-S
ER18/3.2/10-3F3-S
ER18/3.2/10-3F35-A160-S
ER18/3.2/10-3F35-A250-S
ER18/3.2/10-3F35-A400-S
ER18/3.2/10-3F35-S
ER18/3.2/10-3F4-S
ER18/3.2/10-3F45-S
2008 Sep 01
2
Ferroxcube
Planar ER cores and accessories
Properties of core sets under power condition
B (mT) at
GRADE
H = 250 A/m;
f = 25 kHz;
T = 100
°C
≥
370
≥
320
≥
320
≥
340
≥
300
≥
300
CORE LOSS (W) at
f = 100 kHz; f = 100 kHz; f = 100 kHz;
ˆ
ˆ
ˆ
B = 100 mT; B = 200 mT; B = 200 mT;
T = 100
°C
T = 25
°C
T = 100
°C
≤
0.052
≤
0.052
(1)
−
≤
0.035
≤
0.07
−
−
−
≤
0.4
−
−
−
≤
0.35
≤
0.35
(1)
≤
0.38
≤
0.26
−
−
f = 400 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
−
≤
0.13
−
ER18/3.2/10
f = 500 kHz;
ˆ
B = 50 mT;
T = 100
°C
−
−
−
≤
0.22
−
≤
0.078
f = 500 kHz;
ˆ
B = 100 mT;
T = 100
°C
−
−
−
−
−
≤
0.61
3C92
3C93
3C95
3C96
3F3
3F35
1.
Measured at 140
°C.
Properties of core sets under power condition (continued)
B (mT) at
GRADE
H = 1200 A/m;
f = 25 kHz;
T = 100
°C
≥
250
≥
250
f = 1 MHz;
ˆ
B = 30 mT;
T = 100
°C
≤
0.2
≤
0.16
CORE LOSS (W) at
f = 1 MHz;
ˆ
B = 50 mT;
T = 100
°C
−
≤
0.6
f = 3 MHz;
ˆ
B = 10 mT;
T = 100
°C
≤
0.32
≤
0.27
3F4
3F45
MOUNTING INFORMATION
18.55 min
15.1 max
13.3 max
6.5 min
10.1
min
R0.6 max (8×)
MFP030
Fig.2 Recommended PCB cut-out for ER18/3.2/10 cores.
Winding data for ER18/3.2/10 planar core
WINDING AREA
(mm
2
)
15.0
2008 Sep 01
AVERAGE TRACK LENGTH
(mm)
34.2
3
FOOTPRINT AREA
(mm
2
)
225
Ferroxcube
Planar ER cores and accessories
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
Preliminary
specification
Product specification
PRODUCT
STATUS
Development
DEFINITIONS
ER18/3.2/10
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
4
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