CM1394L Datasheet, PDF (1/2 Pages) Coilcraft lnc. – IEEE 1394 Common Mode Choke

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 maxi-
mum 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
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:
CM1394LC
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 15°C rise from 25°C ambient
4. Operating temperature range -40°C to +85°C
5. Electrical specifications at 25°C
B
C
4
E
1
D
1
4
AF
H
G
2
3
0.015
0,38
1
0.057
1,45
4
0.020
0,51
0.115
2,92
2
3
0.048
1,22
0.018
0,46
Recommended
Land Pattern
Pad Detail
0.020
0,51
0.015 _ref
0,38
0.030 ±0.002
0.040 _min 0,76 ±0,05
1,02
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
F ref G min H
0.178 0.04 0.03
4,52 1,02 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.
© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information. Document 215-1 Revised 01/26/05