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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

3D Model Datasheet

CM1394 Series

IEEE1394 Common Mode Choke

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.

Termination

L = Gold over nickel over moly-manganese

Packaging

C = 7" machine-ready reel

. in stock, ready to ship today.

Request a Sample:

Specifications

Electrical specifications at 25°C.

Part number 1	Lines	Common mode peak impedance (kΩ)	Cutoff frequency (MHz) 2	Common mode attenuation typ (dB)		Inductance min (µH) 3	Irms (A) 4	DCR max (Ω) 5	Isolation Voltage (Vrms) 6
Part number 1	Lines	Common mode peak impedance (kΩ)	Cutoff frequency (MHz) 2	100 MHz	500 MHz	Inductance min (µH) 3	Irms (A) 4	DCR max (Ω) 5	Isolation Voltage (Vrms) 6
CM1394L_	2	0.813 @ 660 MHz	1200	11.1	22.7	0.22	1.5	0.105	50

Notes

When ordering, please specify packaging code: e.g. CM1394LC
Frequency at which the differential mode attenuation equals 3 dB
Inductance measured at 100 MHz.
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.
DCR is specified per winding at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
Winding to winding isolation (hipot) tested for one minute.

Termination:

RoHS compliant gold over nickel over moly-manganese.

Packaging:

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.

Environmental

Environmental:

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):

See FIT/MTBF Calculations

Performance curves

Attenuation (Ref: 50 Ohms)

Impedance vs Frequency

Schematics

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

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
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:

Ferrite

Weight:

30 mg

Soldering/Washing

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.

CM1394 Series

IEEE1394 Common Mode Choke