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Designer's Kits

CM1394 Series
IEEE1394 Common Mode Choke

  • Designed for IEEE1394 and other twisted pair interfaces
  • Common- and differential-mode filtering in a single device
  • Over 21 dB attenuation at 400 MHz
  • Less expensive than hand-wound toroid designs
  • Defense Supply Center CID A-A-59744
  • Refer to Designing Common Mode Filters for design guidance.
  • RoHS-compliant. 260°C compatible. Gold over nickel over moly-manganese terminations.


Part number1
Click to get parts
Common mode
peak impedance
Common mode
attenuation typ (dB)
100 MHz 400 MHz 500 MHz
CM1394L_ 0.813 @ 660 MHz 1.2 11.1 21.1 22.7 0.22 0.105 1.5
1 When ordering, please specify packaging code: e.g. CM1394LC


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" reel, machine-ready 
EIA-481 embossed plastic tape. Factory order only, not stocked (2200 parts per full reel).
2 Frequency at which the differential mode attenuation equals 3 dB
3 Inductance measured at 100 MHz.
4 DCR is specified per winding at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
5 Irms: Current per winding that causes a 20°C temperature rise from 25°C ambient. This information is for reference only and does not represent absolute maximum ratings.
6 Storage temperature range: Component: −40°C to +85°C
Tape and reel packaging: −40°C to +80°C
7 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
8 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info

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Updated: October 30, 2017