? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. ieee 1394 common mode choke document 215 -1 document 215-1 revised 01/26/05 the cm1394 provides a low cost, high performance way to virtually eliminate common mode noise from ieee 1394 and other high-speed twisted pair interfaces. it provides over 17 db attenuation of common mode noise at 400 mhz while differential mode signals extend out to 800 mhz before reaching the 3 db point. this shielded, 1812 size filter is machine wound, making it less expensive than hand-wound toroid designs. it also assures tighter tolerances between windings for excellent impedance balance. coilcraft?s cm1394 meets the ieee 1.5 amp i rms specification and has a maxi- mum dcr of 0.105 ohms. to request free evaluation samples, contact coilcraft or visit www.coilcraft.com . part inductance 2 dcr max i rms 3 number 1 min (h) (ohms) (amps) CM1394L_ 0.22 0.105 1.5 insertion loss (db) common mode/differential mode 100 mhz 200 mhz 400 mhz 500 mhz 9.04 / 0.19 13.66 / 0.94 17.75 / 1.79 17.11 / 2.09 1. when ordering, please specify packaging code: CM1394L c packaging: c =7 machine-ready reel. eia-481 embossed plastic tape (600 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 (2200 parts per full reel). 2. inductance measured at 100 khz. 3. average current for 15c rise from 25c ambient 4. operating temperature range -40c to +85c 5. electrical specifications at 25c a max b max c max d ref e ref f ref g min h 0.231 0.196 0.150 0.107 0.100 0.178 0.04 0.03 5,87 4,98 3,81 2,72 2,54 4,52 1,02 0,76 2 14 3 4 1 a b e h g f c d 0.048 1,22 0.015 0,38 0.115 2,92 0.018 0,46 0.020 0,51 0.057 1,45 recommended land pattern 0.015 0,38 ref 0.040 1,02 0.020 0,51 min 0.030 0.002 0,76 0,05 pad detail 4 1 3 2 terminations: gold over nickel over moly-manganese weight: 30 mg tape and reel: 600/7 reel; 2200/13 reel 12 mm tape width for packaging data see tape and reel specifications section.
? coilcraft, inc. 2009 specifications subject to change without notice. please check our website for latest information. ieee 1394 common mode choke impedance vs frequency frequency response 1 1 10 100 impedance (ohms) frequency (mhz) 1000 10 100 1000 5 10 15 0.01 0.1 1 10 100 1000 10000 20 0 attenuation (db) frequency (mhz) common mode differential mode document 215 -2 document 215-2 revised 01/26/05
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