Document 306-1
USB 2.0 Common Mode Filter – 0805
These Coilcraft filters are designed to eliminate virtually all common mode noise in high-speed, differential mode signal transmission applications such as USB 2.0, IEEE1394 and LVDS. Most provide greater than 25 dB common mode attenuation and greater than 100 ohms impedance. The low profile design and standard 0805 footprint make it the ideal solution for designs where board space is at a premium. These dual-wound filters feature very low DC resistance and are available in eight values to meet your specific requirements. Coilcraft Designer’s Kit C184 contains samples of all values shown here plus all values in our 1206USB and 0603USB series. To order, contact Coilcraft or purchase online at http://order.coilcraft.com.
Common mode impedance typ (Ohms) 10 MHz 100 MHz 500 MHz Common mode attenuation typ (dB) Inductance2 DCR max3 10 MHz 100 MHz 500 MHz min (nH) (Ohms)
Part number1
Isolation Irms4 (Vrms) (mA)
0805USB-421MB_ 0805USB-901MB_ 0805USB-172MB_ 0805USB-262MB_ 0805USB-372MB_ 0805USB-502MB_ 0805USB-672MB_ 0805USB-902MB_
14 28 57 85 118 148 246 294
42 90 170 260 370 500 670 900
70 154 303 435 641 945 1231 1715
1.1 1.4 2.3 3.0 4.5 4.9 8.4 8.7
2.3 4.2 6.7 8.6 11.9 14.5 16.6 18.7
8.4 16.9 22.0 27.8 34.3 31.3 30.0 30.5
23 47 84 147 189 273 322 413
0.12 0.17 0.25 0.26 0.32 0.37 0.45 0.65
2
250 250 250 250 250 250 250 250
1
500 500 500 500 500 500 500 400
1. When ordering, please specify packaging code: 0805USB-902MBC Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (2000 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter C instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape (7500 parts per full reel). 2. Inductance measured at 100 MHz using an Agilent/HP 4286A impedance analyzer and a Coilcraft SMD-A fixture. 3. DCR is specified per winding. 4. Average current per winding for a 20°C rise from 25°C ambient. 5. Operating temperature range −40°C to 85°C. 6. Electrical specifications at 25°C.
0.080 ±0.004 2,03 ±0,10 0.055 ±0.004 1,40 ±0,10
3
0.004 0,10 0.020 0.040 0,51 1,02 0.040 1,02
2 1 2
4
0.030 0,76
1
0.014 0,36
0.050 ±0.004 1,27 ±0,10
4 3 3 4
0.018 0,46
Recommended Land Pattern
0.018 0,46
Terminations: Nickel/gold over silver palladium Tape and reel: 2000/7″ reel; 7500/13″ reel 8 mm tape width For packaging data see Tape and Reel Specifications section.
Specifications subject to change without notice. Please check our website for latest information.
Document 306-1
Revised 12/15/04
Document 306-2
USB 2.0 Common Mode Filter — 0805
Typical Attenuation
0 5
10
-902 -672
Attenuation (dB)
15
-502 -372 -262 -172 -901 -421
20
25
30
35 Common mode Differential mode (typical for all parts) 40 1 10 100 1000
Frequency (MHz)
Typical Impedance vs Frequency
10000
-902 -672 -502 -372 -262 -172
1000
Impedance (Ohms)
-901
100
-421
10
1 1 10 100 1000
Frequency (MHz)
Specifications subject to change without notice. Please check our website for latest information.
Document 306-2
Revised 04/15/03
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