Data Sheet - Fair-Rite Products Corp.

Fair-Rite Product's Catalog
Part Data Sheet, 9578282802
Printed: 2013-07-03
Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) 324-7748 www.fair-rite.com
Part Number:
9578282802
Frequency Range: Dimensions
Description:
78 EER CORE
Application:
Inductive Components
Where Used:
Closed Magnetic Circuit
Part Type:
EER Cores
Generic Name:
EER28/28
Mechanical Specifications
Weight:
28.000 (g) per Set
Part Type Information
EER25.5/18, EER28/28, EER28/34, EER35/42, EER40/46, EER42/44, EER49/54
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 that minimizes winding losses.
-EER cores can be supplied with the centerpost gapped to a mechanical dimension or an AL value.
-AL value is measured at 1 kHz, B < 10 gauss.
-Weight indicated is per pair or set.
Fair-Rite Product's Catalog
Part Data Sheet, 9578282802
Printed: 2013-07-03
Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) 324-7748 www.fair-rite.com
Mechanical Specifications
Land Patterns
V
Dim
mm
A
B
C
D
E
F
G
H
J
K
28.50
14.00
11.40
9.60
21.20
9.90
-
mm
nominal inch
tol
inch
misc.
± 0.6
± 0.2
± 0.3
± 0.2
min
± 0.3
-
1.122
0.551
0.449
0.378
0.835
0.390
-
min
-
Electrical Specifications
Typical Impedance ( )
W
X
Y
Z
-
-
-
ref
-
-
Winding Information
Turns
Wire
1st Wire
2nd Wire
Tested
Size
Length
Length
-
-
-
-
Reel Information
Tape Width Pitch
Parts 7 ''
Parts 13 '' Parts 14 ''
mm
mm
Reel
Reel
Reel
-
-
-
-
-
Package Size
Pkg Size
Electrical Properties
AL (nH)
2800 ±25%
Ae(cm2 )
0.85900
-1
l/A(cm )
l e (cm)
3
(-)
Connector Plate
7.30
# Holes
# Rows
6.29
-
-
Ve (cm )
5.39800
Amin (cm2)
.770
Legend
+ Test frequency
Preferred parts, the suggested choice for new designs,have shorter lead times and are more readily available.
The column H(Oe) gives for each bead the calculated dc bias field in oersted for 1 turn and 1 ampere direct current. The actual dc H field in
the application is this value of H times the actual NI (ampere-turn) product. For the effect of the dc bias on the impedance of the bead material,
see figures 18-23 in the application note How to choose Ferrite Components for EMI Suppression.
A ½ turn is defined as a single pass through a hole.
l/A - Core Constant
Ae : Effective Cross-Sectional Area
L
AL - Inductance Factor (__
N 2)
N/AWG - Number of Turns/Wire Size for Test Coil
l e : Effective Path Length
Ve : Effective Core Volume
Nl - Value of dc Ampere-turns
Fair-Rite Product's Catalog
Part Data Sheet, 9578282802
Printed: 2013-07-03
Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) 324-7748 www.fair-rite.com
See next page for further material specifications.
Fair-Rite Product's Catalog
Part Data Sheet, 9578282802
Printed: 2013-07-03
Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) 324-7748 www.fair-rite.com
Fair-Rite Product's Catalog
Part Data Sheet, 9578282802
Printed: 2013-07-03
Fair-Rite Products Corp. PO Box J,One Commercial Row, Wallkill, NY 12589-0288
Phone: (888) 324-7748 www.fair-rite.com