88
13th Edition
Wound Beads
Six and eleven hole beads, in 44 material and 61 material, are available as beads and wound with
tinned copper wire in several winding configurations.
B
• Available materials: 44 and 61.
• Parts with a “1” as the last digit of the part number are supplied bulk packed.
Parts 29 - - 666651 and 29 - - 666631 can be supplied radially taped and
reeled per EIA Standard 468-B. This packing method will change the last
digit of the part number to a “4”.
• Wire used for winding is oxygen free high conductivity copper with a
tin plating.
•For performance data on Wound Beads, see page 58 of section
“How to Choose Ferrite Components for EMI Suppression”.
• Beads are controlled for impedance limits only. They are tested for
impedance using a Hewlett Packard HP 4193A Vector Impedance Meter
for beads in 44 material and the HP 4191A RF Impedance Analyzer for
61 material beads.
• The Expanded Bead-on-Lead EMI Suppressor Kit (part number
0199000010) is available for prototype evaluation. See page 84.
30
o
A
D
45
o
C
Figure 1
B
A
D
C
Figure 2
Wire Length
Figure 1-1
Figure 1-2
Figure 1-3
Figure 1-4
Figure 1-5
Figure 2-1
Impedance (
Ω
)
44
Figure 2-2
Dimensions
(Bold
numbers are in millimeters,
light numbers are nominal in inches.)
Part Number*
26 - - 666611
1
2644777711
1
2
Fig.
1
2
2
A
6.0±0.25
.236
10.0±0.25
.394
B
0.75+0.15
.032
0.9+0.15
.038
C
10.0±0.25
.394
10.0±0.25
.394
D
Ref
3.5
.138
7.5
.295
Wt (g)
61
100 MHz
50 MHz
100 MHz
200 MHz
10 MHz
50 MHz
1.2
3.3
170 Min. 320 Min. 375 Min. 250 Min. 400 Min. 325 Min.
300 Min. 725 Min. 400 Min.
–
–
–
Tested with 1½ Turns
Tested with 2½ turns
Part Number*
29 - - 666661
29 - - 666651
29 - - 666671
29 - - 666681
29 - - 666631
2944777741
2944777721
Fig.
1-1
1-2
1-3
1-4
1-5
2-1
2-2
Turns
1½
2
2½
2 x 1½
3
4½
2 x 2½
44
Wire Size
0.53
24 AWG
0.53
24 AWG
0.53
24 AWG
0.53
24 AWG
0.53
24 AWG
0.65
22 AWG
0.65
22 AWG
61
100 MHz
50 MHz
100 MHz
200 MHz
Wire Length Wt (g)
38.0±3.0
1.500
38.0±3.0
1.500
38.0±3.0
1.500
38.0±3.0
1.500
38.0±3.0
1.500
38.0±3.0
1.500
10 MHz
50 MHz
1.3
1.3
1.4
1.4
1.4
3.8
3.9
170 Min. 320 Min. 375 Min. 250 Min. 400 Min. 325 Min.
240 Min. 520 Min. 480 Min. 425 Min. 600 Min. 300 Min.
320 Min. 680 Min. 580 Min. 550 Min. 675 Min. 275 Min.
170 Min. 320 Min. 375 Min. 250 Min. 400 Min. 325 Min.
400 Min. 800 Min. 550 Min. 650 Min. 625 Min. 250 Min.
650 Min. 1000 Min. 400 Min.
300 Min. 725 Min. 400 Min.
–
–
–
–
–
–
3
* Insert desired material in 3rd & 4th digit positions.
3
Wire length of one winding is
38.0±3.0
(1.500). Wire length of second winding is
28.5±3.0
(1.125)
Fair-Rite Products Corp.
Phone: (888) FAIR RITE / (914) 895-2055
(888) 324-7748
One Commercial Row, Wallkill, NY 12589-0288
•
FAX: (888) FERRITE / (914) 895-2629 • www.fair-rite.com • E-Mail: ferrites@fair-rite.com
(888) 337 -7483
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