Data Sheet - Fair-Rite Products Corp.

Fair-Rite Product's Catalog
Part Data Sheet, 8978303021
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:
8978303021
Frequency Range: Dimensions
Description:
78 EFD CORE
Application:
Inductive Components
Where Used:
Closed Magnetic Circuit
Part Type:
EFD Cores
Generic Name:
EFD30
Mechanical Specifications
Weight:
24.000 (g) per Set
Part Type Information
EFD10, EFD12, EFD15, EFD20, EFD25, EFD30
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 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, 8978303021
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
30.00
15.00
9.10
11.20
22.40
14.60
4.90
mm
nominal inch
tol
inch
misc.
± 0.8
± 0.25
± 0.3
± 0.3
± 0.75
± 0.3
± 0.2
1.181
0.591
0.358
0.441
0.882
0.575
0.193
-
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 )
0.69000
-1
l/A(cm )
l e (cm)
3
(-)
Connector Plate
11.30
# Holes
# Rows
6.93
-
-
Ve (cm )
4.26000
Amin (cm2)
.660
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, 8978303021
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, 8978303021
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, 8978303021
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