EFD Cores (8998252521)
Part Number: 8998252521
98 EFD CORE SET
EFD (Economical Flat Design) cores have been designed to maximize volume in a low profile geometry. EFD cores allow
maximum throughput power density with reasonably low mass for board level installation.
EFD cores can be supplied with the center post gapped to a mechanical dimension or an A
L
value.
Weight indicated is per pair or set.
Weight: 16 (g)
Dim mm mm tol
A
25
± 0.50
B
12.5 ± 0.25
C
9.1
± 0.30
D
9.3
± 0.25
E
18.7 ± 0.60
F
11.4 ± 0.20
K
5.2
± 0.20
nominal inch
0.984
0.492
0.358
0.366
0.736
0.449
0.205
inch misc.
_
_
_
_
_
_
_
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)
2250 ±25%
2
Ae(cm ) 0.58
-1
Σl/ A(cm ) 10.4
l
e
(cm)
5.88
3
V
e
(cm )
3.32
2
A
min
(cm ) 0.55
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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