Ferroxcube
EQ cores and accessories
CORES
Effective core parameters of a set of EQ cores
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
0.341
7900
51.9
152
119
≈
21.5
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
38.1
±
0.7
33.1
±
0.6
24.76
±
0.5
14
±
0.2
5.3
±
0.2
R0.25 max (4x)
EQ38/8/25
8
±
0.15
25.4
±
0.5
R0.8 (4x)
R0.8 (4x)
Dimensions in mm.
R0.4
R0.8 (4x)
MFP223
Fig.1 EQ38/8/25 core.
Effective core parameters of an EQ/PLT combination
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 plate
VALUE
0.282
6190
41.7
148
119
≈
14.6
UNIT
mm
−1
mm
3
mm
mm
2
mm
2
g
handbook, halfpage
38.1
±
0.7
2.7
±
0.2
Ordering information for plates
GRADE
3C94
3C95
3C96
3F35
3F4
3F45
TYPE NUMBER
PLT38/25/2.7-3C94
PLT38/25/2.7-3C95
PLT38/25/2.7-3C96
PLT38/25/2.7-3F35
PLT38/25/2.7-3F4
PLT38/25/2.7-3F45
Dimensions in mm.
MFP237
25.4
±
0.5
Fig.2 PLT38/25/2.7.
2008 Sep 01
2
Ferroxcube
EQ cores and accessories
EQ38/8/25
Core halves for use in combination with an EQ core
A
L
measured in combination with a non-gapped core half, clamping force for A
L
measurements, 50
±
20 N.
GRADE
3C94
3C95
3C96
3F35
3F4
3F45
A
L
(nH)
7000
±
25 %
8810
±
25 %
6300
±
25 %
4500
±
25 %
3000
±
25 %
3000
±
25 %
µ
e
≈
1900
≈
2395
≈
1710
≈
1220
≈
815
≈
815
AIR GAP
(µm)
≈
0
≈
0
≈
0
≈
0
≈
0
≈
0
TYPE NUMBER
EQ38/8/25-3C94
EQ38/8/25-3C95
EQ38/8/25-3C96
EQ38/8/25-3F35
EQ38/8/25-3F4
EQ38/8/25-3F45
Core halves for use in combination with a plate (PLT)
A
L
measured in combination with a plate (PLT), clamping force for A
L
measurements, 50
±
20 N.
GRADE
3C94
3C95
3C96
3F35
3F4
3F45
A
L
(nH)
8200
±
25 %
10220
±
25 %
7400
±
25 %
5300
±
25 %
3500
±
25 %
3500
±
25 %
µ
e
≈
1840
≈
2295
≈
1660
≈
1190
≈
785
≈
785
AIR GAP
(µm)
≈
0
≈
0
≈
0
≈
0
≈
0
≈
0
TYPE NUMBER
PLT38/25/2.7-3C94
PLT38/25/2.7-3C95
PLT38/25/2.7-3C96
PLT38/25/2.7-3F35
PLT38/25/2.7-3F4
PLT38/25/2.7-3F45
2008 Sep 01
3
Ferroxcube
EQ cores and accessories
DATA SHEET STATUS DEFINITIONS
DATA SHEET
STATUS
Preliminary
specification
Product specification
PRODUCT
STATUS
Development
DEFINITIONS
EQ38/8/25
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
5
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