Planar Cores (7895400221)
Part Number: 7895400221
95 PLANAR EI CORE SET
Planar EE and EI cores, with their low profile are suitable for board level installation allowing assembly without the need for
plastic coilformers and can also allow windings integrated into multi- level PCBs. Planar ER cores with their low mass and low
profile are suitable for Surface Mount installations in low power filter and transformer applications.
Planar EE, ER and EI cores can be supplied with the center post gapped to a mechanical dimension, or an A
L
value.
Weight: 4.1 (g)
Dim mm mm tol
A
18
± 0.35
B
4
± 0.15
C
10
± 0.30
D
1.8
min
E
13.7 min
F
4
± 0.20
G
2.4
± 0.15
nominal inch
0.709
0.157
0.394
0.071
0.539
0.157
0.094
inch misc.
_
_
_
min
min
_
_
Chart Legend
Σl/ A : Core Constant, l
e
: Effective Path Length, A
e
: Effective Cross- Sectional Area, V
e
:
Effective Core Volume
A
L
: Inductance Factor
Explanation of Part Numbers: Digits 1 & 2 = product class and 3 & 4 = material grade.
Electrical Properties
A
L
(nH)
3800 ±25%
2
Ae(cm ) 0.421
-1
Σl/ A(cm ) 4.9
l
e
(cm)
2.05
3
V
e
(cm )
0.863
2
A
min
(cm ) 0.4
A
L
value is measured at 1 kHz, B < 10 gauss.
Fair- Rite Products Corp.
•
One Commercial Row, Wallkill, New York 12589-0288
888-324-7748 • 845-895-2055 • Fax: 845-895-2629 • ferrites@fair- rite.com • www.fair- rite.com
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