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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

CM1394 Series

IEEE1394 Common Mode Choke

RoHS compliant
Our CM1394 Series common mode choke was designed for IEEE1394 and other twisted-pair interfaces. It provides common mode and differential mode filtering in a single device with more than 21 dB attenuation at 400 MHz and is less expensive than hand-wound toroid designs.
  • Designed for IEEE1394 and other twisted-pair interfaces
  • Common mode and differential mode filtering in a single device
  • More than 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.

Buy Now:
Count Unit price
1 $2.65
300 $2.10
600 $1.56
1200 $1.17
2400 $0.86
4800 $0.67

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
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Electrical specifications at 25°C.

Part number 1 Lines Common mode
peak impedance (kΩ)
frequency (MHz) 2
Common mode
attenuation typ (dB)
min (µH) 3
Irms (A) 4 DCR max (Ω) 5 Isolation
Voltage (Vrms) 6
100 MHz 500 MHz
CM1394L_ 2 0.813 @ 660 MHz 1200 11.1 22.7 0.22 1.5 0.105 50
  1. When ordering, please specify packaging code: e.g. CM1394LC
  2. Frequency at which the differential mode attenuation equals 3 dB
  3. Inductance measured at 100 MHz.
  4. 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.
  5. DCR is specified per winding at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  6. Winding to winding isolation (hipot) tested for one minute.


  • RoHS compliant gold over nickel over moly-manganese.


  • C = 7″ machine-ready reel. EIA-481 embossed plastic tape (600 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape (2200 parts per full reel).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to C.
RoHS compliant
Ambient temperature range:
–40°C to +85°C with Irms current
Storage temperature range:
Component: –40°C to +100°C.
Tape and reel packaging: –40°C to +80°C
Maximum part temperature:
+100°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Attenuation (Ref: 50 Ohms)

Impedance vs Frequency



Physical characteristics

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

1812pad.gif              m2022lnd.gif

Tape and Reel specification


Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_i.gif
600 2200* 178/330 60/100 13 18,4 12,4 12 8 4 2 3,9 0,25
* Special order

General specification

Core Material:
30 mg


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
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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