CM1394L

Document 215 -1 IEEE 1394 Common Mode Choke 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 Irms specification and has a maximum DCR of 0.105 Ohms. To request free evaluation samples, contact Coilcraft or visit www.coilcraft.com. Part number1 CM1394L_ Inductance2 min (µH) 0.22 DCR max (Ohms) 0.105 Irms3 (Amps) 1.5 AF 4 B E 1 C D 1 4 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). Inductance measured at 100 kHz. Average current for 15°C rise from 25°C ambient Operating temperature range -40°C to +85°C Electrical specifications at 25°C 2 H G 0.015 0,38 0.057 1,45 4 3 1 0.020 0,51 0.115 2,92 Pad Detail 0.020 0,51 0.015 ref 0,38 2. 3. 4. 5. 2 3 0.048 1,22 0.018 0,46 Recommended Land Pattern A max 0.231 5,87 B max 0.196 4,98 C max 0.150 3,81 D ref 0.107 2,72 E ref 0.100 2,54 0.040 min 1,02 0.030 ±0.002 0,76 ±0,05 F ref 0.178 4,52 G min 0.04 1,02 H 0.03 0,76 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. Specifications subject to change without notice. Please check our website for latest information. Document 215-1 Revised 01/26/05 © Coilcraft, Inc. 2009 Document 215 -2 IEEE 1394 Common Mode Choke Frequency Response 0 Differential mode Impedance vs Frequency 1000 Impedance (Ohms) 5 Attenuation (dB) 100 Common mode 10 10 15 20 0.01 0.1 1 10 100 1000 10000 1 1 10 100 1000 Frequency (MHz) Frequency (MHz) Specifications subject to change without notice. Please check our website for latest information. Document 215-2 Revised 01/26/05 © Coilcraft, Inc. 2009