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2000 Series
Ferrites for EMI Suppression
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Cylindrical Ferrites
A 2.03 6.78 .15 9.53 .20 9.53 .20 9.53 .20 9.91 .20 12.70 .25 14.27 .25 14.27 .25 14.27 .25 14.27 .25 14.27 .25 14.48 .25 14.99 .25 14.99 .25 15.24 .30 15.65 .30 15.88 .30 15.88 .30 16.00 .30 16.00 .30 16.00 .30 16.99 .36 17.07 .36 17.42 .36 17.42 .36 17.42 .36 18.67 .36 18.67 .36 18.67 .36 18.67 .36 20.95 .40 22.10 .46 22.10 .46 25.40 .46 25.40 .46 25.40 .46 25.40 .46 25.91 .46 28.50 .46 29.01 .51 29.01 .51 31.12 .61 31.12 .61 31.75 .61 31.75 .61 35.23 .66 36.00 .71 38.86 .76 60.96 1.14 0.89
B 2.67
C
Imp@100Mhz 23
4.00 .13 5.08 .15 5.08 .15 5.08 .15 6.35 .15 7.92 .15 6.35 .15 6.35 .15 6.35 .15 7.26 .15 7.26 .15
14.22 .25 14.48 .25 19.05 .51 4.83 .13
96
13.46 .25 6.35 .18
Kemtron Ltd represent and distribute Ferrites for Steward Inc. Established in 1876 Steward is a leading producer of ferrite and related materials used in the electronics, copier, telecommunications, military and automotive industries. Ferrite for EMI suppressor products is nickel zinc and exhibit magnetic properties that are dependent on the frequency at which they loss to frequency is utilised to attenuate interference frequencies where the materials losses are high, yet pass lower bands where data is carried.
are excited. In electronic applications the relation of the magnetic
By changing the ferrite composition, it is possible to alter the loss tangent so that attenuation can be enhanced in selected frequency ranges. Steward offers a family of ferrites with varying compositions to allow the user to select the optimum type for the application. The product line:
Cylindrical EMI suppression ferrites Rectangular EMI suppression ferrites EMI suppression ferrites for connectors EMI suppression ferrites for DIL IC's Common mode power/data line EMI ferrites Power/data line EMI suppression ferrites Split ferrites for round cables Split ferrites for flat cables Multiple turn devices Axial lead ferrites Surface mount EMI ferrites Shown are the more common parts, for a full Steward Catalogue please contact us. Large stocks of most parts are held at our warehouse and available for next day delivery.
DIMENSIONS ARE IN MILLIMETRES
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8.51 .152 6.99 .15 6.99 .15 3.38 .13 6.99 .15 7.87 .15 7.87 .15 9.50 .20 9.09 .20 9.09 .20 7.01 .20 8.76 .20 9.52 .20 9.52 .20 9.52 .20 11.18 .20 10.16 .20 10.16 .20 11.18 .20 13.21 .25 13.72 .25 13.72 .25 15.49 .30 15.49 .30 12.70 .25 12.70 .25 12.83 .25 13.77 .25 19.00 .38 19.00 .38 19.05 .41 19.05 .41 19.05 .41 19.05 .41 22.40 .46 22.99 .46 26.16 .51 35.56 .64
10.16 .25 13.46 .25 28.57 .76 15.24 .30 28.57 .76 5.51 .13 27.94 .76 28.57 .76 6.35 .18 28.57 .76 14.27 .25 28.57 .76 6.35 .20 11.99 .25 27.99 .76 24.99 .64 25.40 .76 6.35 .18 12.70 .25 28.57 .76 28.57 .76 28.57 .76 14.27 .25 17.02 .64 6.35 .18 6.35 .18 12.70 .25 12.70 .25 6.35 .18 12.70 .25 6.35 .18 28.57 .76 28.57 .76 7.49 .25 13.84 .25 15.93 .30 7.92 .25 22.22 .51 15.93 .30 12.70 .25 12.70 .25 28.58 .76 12.70 .38
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112 140 39 76
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Part No.
28B0080-000 28B0268-000
28B0375-100 28B0375-300 28B0375-400 28B0390-000
38 93 123 275 120 228 38 253 259 110 273 121 238 42 88 201 262 215 49 97 200 173 201 108 111 37 35 70 80 40 109 56 238 247 40 78 99 49 144 102
28B0500-100 28B0562-000 28B0562-100 28B0562-200 28B0563-000 28B0563-200 28B0570-000 28B0590-000 28B0590-200 28B0600-000 28B0616-000 28B0625-000 28B0625-100 28B0630-100 28B0631-000 28B0631-100 28B0669-000 28B0672-000 28B0686-000 28B0686-100 28B0686-200 28B0734-000 28B0735-000 28B0735-300 28B0736-200 28B0825-000 28B0870-000 28B0870-100 28B0999-000 28B0999-100 28B1000-000 28B1000-400 28B1020-100 28B1122-100 28B1142-000 28B1142-100 28B1225-000
All impedance values are Net; they are based on the ferrite cores only.
Kemtron Limited, Prospect House 1-3 Brickfields Road, South Woodham Ferrers, Chelmsford, Essex CM3 5XB, England Telephone +44(0)1245 325555 Facsimile +44(0)1245 325590 Email: info@kemtron.co.uk Internet: www.kemtron.co.uk
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28B1225-100
28B1250-000 28B1250-100
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28B1387-000 28B1417-200
28B1531-000 28B2400-000
2000 Series
Ferrites for EMI Suppression
Split Round Cable Ferrites with Plastic Case
Solid Flat Ribbon Ferrites
Fig 2 1 1 1
A 25.0 32.5 32.5 32.5
B 11.2 29.0 17.9 21.5
C 12.8 29.6 18.4 22.3
D 5.0 13.0 7.0 10.0
Imp@100MHz 130 240 279 209
Part No. 28A0392-0A* 28A2024-0A* 28A2025-0A* 28A2029-0A*
All impedance values are Net; they are based on the ferrite cores only. *0A0= White Plastic Snap On Case (Standard stock colour) 0A1= Gray Plastic Snap On Case 0A2= Black Plastic Snap On Case 0A3= Beige Plastic Snap On Case
Split Flat Ribbon Cable Ferrites
Fig 4 4 3 1 1 5 5 5 5 3 1 5 2 2 2 2 3 3 5 3 3
A 10.00.20 10.00.20 22.35.51 27.97.64 27.97.64 28.58.51 31.12.51 32.00.51 37.01.64 38.53.76 38.60.76 15.50.38 45.80.89 63.501.27 63.501.27 60.81.76 55.121.27 55.121.27 56.901.02 60.811.27
B 7.01.15 7.01.15 14.00.15 22.94.50 22.94.50 23.51.51 24.76.51 27.58.51 33.00.51 26.77.76 26.92.64 13.50.38 34.42.64 52.071.02 52.071.02 50.801.02 43.691.02 43.691.02 52.321.02 50.801.02
C 10.00.25 20.02.51 19.05.64 14.66.38 6.81.20 31.001.0 6.35.38 2.98.20 13.46.25 25.40.76 25.40.76 10.00.25 28.58.64 28.58.64 12.98.38 15.49.41 25.40.76 12.70.51 5.00.20
D 7.01.15 7.01.15 7.75.38 7.75.38 7.75.38 7.70.51 8.26.38 5.00.30 4.50+.38-. 3 1 12.07.51 12.19.51 3.40.50 12.45.51 12.70.51 12.70.51 17.63+1.14-.38 12.70.51 12.70.38 5.59.38
E 4.01.15 4.01.15 1.50.25 1.50.25 1.50.25 1.68.38 1.90.38 .51.13 .50+.20-. 3 1 1.91.51 1.88.46 1.40.51 1.52.51 1.68.51 1.68.51 7.62+1.14-.38 1.27.38 1.27.38 1.02.25 7.52.64 1.91.51
Imp@100MHz 50 100 145 95 44 193 46 21 42 206 206 32 249 264 120 74 262 141 34 60 93
Part No. 28R0393-000 28R0393-100 28R0880-000 28R1101-000 28R1101-100 28R1127-000 28R1227-000 28R1260-000 28R1457-400 28R1517-000 28R1518-000 28R1550-000 28R1775-000 28R1779-000 28R1779-100 28R2002-100 28R2170-000 28R2170-100 28R2240-000 28R2393-000 28R3149-000 Fig 3 2 1 1 1 1 1 1 1 A 17.02.25 43.59.76 B 12.50.20 35.00.70 C 15.00.20 28.0.58 28.58.64 28.58.64 15.01.64 28.58.76 12.70.76 28.58.64 25.40.51 D 3.40.20 5.26.23 6.35.25 6.68.25 6.35.25 6.48.25 6.48.25 6.35.25 6.35.25 E .51.20 .95.25 .84.25 .84.25 .84.25 .84.25 .84.25 .84.25 .84.25 Imp@100MHz 93 153 250 232 122 240 106 226 217 Part No. 28S0670-000 28S1517-000 28S2001-000 28S2011-000 28S2011-100 28S2012-000 28S2012-100 28S2022-000 28S2023-000
63.501.27 52.071.02 76.201.52 65.281.27 76.201.52 65.281.27 88.901.78 78.231.52 88.901.78 78.231.52 45.09.89 38.10.76 34.42.64 26.67.76
15.49.030 13.61+1.02-.64 12.70.51 12.00.64
All impedance values are Net; they are based on the ferrite cores only.
Split ferrites for flat cables are sold as single sides. It is necessary to order two sides to form one set. Metal or Plastic clips are available for the split ferrites. To specify Plastic Clip, replace the second character after the dash with "P". Example: 28S2022-0P0 To specify Metal Clip, replace the second character after the dash with "M". Example: 28S2022-0M0
80.001.397 68.581.27
All impedance values are Net; they are based on the ferrite cores only.
DIMENSIONS ARE IN MILLIMETRES
Kemtron Limited, Prospect House 1-3 Brickfields Road, South Woodham Ferrers, Chelmsford, Essex CM3 5XB, England Telephone +44(0)1245 325555 Facsimile +44(0)1245 325590 Email: info@kemtron.co.uk Internet: www.kemtron.co.uk
2000 Series
Ferrites for EMI Suppression
Clips for Split Ferrites for Flat Cables
Description Plastic End Clip ASSE001-2 Metal End Clip ASSE017-2
A 31.50 15.67
B 15.49 7.11
C 16.51 12.70
D 26.72 5.08
E 6.73 7.26
F 2.41 7.82
G 6.35 0.53
H 3.50
DIMENSIONS ARE IN MILLIMETRES
Kemtron Limited, Prospect House 1-3 Brickfields Road, South Woodham Ferrers, Chelmsford, Essex CM3 5XB, England Telephone +44(0)1245 325555 Facsimile +44(0)1245 325590 Email: info@kemtron.co.uk Internet: www.kemtron.co.uk

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