EMI SINGLE HOLE SUPPRESSION BEADS

shield bead diag

Listed in ascending order of "B" dimension
Beads are controlled for impedance limits only.

The "H" column gives for each bead size 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.
Note: 1 turn defined as wire passing once through the bead.

Dimensions in bold type are in millimeters, italic numbers are nominal in inches.

Part Number Typical Impedance (ohms) @ MHz H (Oe) Wt (g) Dimensions
1 5 10 25 100 250 500 1000 A B C
FB-75-101 27   22           2.0 .13 3.5�0.2
.138		 1.3�0.1
.051		 3.25�0.25
.128
FB-73-101 8 20 25 35         2.0
FB-43-101     17 26 40 56     2.0
FB-61-101         33 51 72 105 2.0
FB-43-401     36 55 82 97     1.5 .56 5.1�0.25
.200		 1.45+0.25
.062		 6.35�0.25
.250
FB-73-1801 35 84 94 95         1.5 1.0 5.1�0.25
.200		 1.45+0.25
.062		 11.1�0.35
.437
FB-43-1801     62 96 131 151     1.5
FB-61-1801         102 141 167 185 1.5
FB-73-801 23 55 48 45         1.0 1.4 7.5�0.25
.296		 2.25+0.25
.094		 7.55�0.25
.297
FB-43-801     42 63 92 109     1.0
FB-64-801         84 114 134 160 1.0
FB-43-2501     43 69 102 111     .91 1.2 6.35�0.15
.250		 2.95+0.45
.125		 12.7�0.5
.500
FB-77-6301     80 60         .60 2.2 9.5�0.25
.375		 4.75+0.3
.193		 10.4�0.25
.410
FB-43-6301     34 53 80 92     .60
FB-73-2401 8 19 19 15         .59 1.2 9.65�0.25
.380		 5.0�0.2
.197		 5.05-0.45
.190
FB-43-2401     16 26 43 56     .59
FB-31-5621 35 91 119 181 300 280     .43 17.7 14.3�0.45
.562		 6.25�0.25
.250		 28.6-0.75
1.125
FB-43-5621     105 171 250 255     .43
FB-31-1020 31 79 103 156 260 280     .22 55 25.9�0.75
1.020		 12.8�0.25
.505		 28.6-0.8
1.125
FB-43-1020     91 145 235 275     .22
FB-77-1024     166 135         .22 40 25.9�0.75
1.020		 12.8�0.25
.505		 21.0-0.4
0.825

23/04/07
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