EER Cores (9578424402)
Part Number: 9578424402
78 EER CORE SET
EER cores, similar to ETD cores, have been designed to make optimum use of a given volume of ferrite material for
maximum throughput power. The structure, which includes a round center post, approaches a nearly uniform cross-
sectional area throughout the core and provides a winding area that minimizes winding losses.
EER 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: 96 (g)
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) 4000 ±25%
Ae(cm
2
) 1.87
Σl/ A(cm
-1
) 5.2
l
e
(cm) 9.79
V
e
(cm
3
) 18.26
A
min
(cm
2
) 1.81
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
Dim mm mm tol nominal inch inch misc.
A 42 ± 0.70 1.654 _
B 22 ± 0.20 0.866 _
C 15.2 ± 0.35 0.598 _
D 15.4 ± 0.20 0.606 _
E 30.5 min 1.201 min
F 15.2 ± 0.35 0.598 _
