© Coilcraft, Inc. 2008
Specifications subject to change without notice.
Please check our website for latest information.
Modular Jack EMI Filters
Document 154
Document 154 Revised 11/10/08
Eliminating common mode EMI from telephone lines and
LANs can be done quickly and easily with these plug-in
filter modules.
One, two, and four line (two, four and eight wire) versions
are available with RJ11, RJ14, or RJ45 standard termina-
tions. They’re designed to help meet FCC Part 15 and 68
as well as European CCITT and CISPR-22 requirements.
Part A B C C
number Lines max max min max
TRF-RJ11 1 0.68/17,2 0.84/21,3 4.54/115,3 5.54/140,7
TRF-RJ14 2 0.68/17,2 0.84/21,3 4.54/115,3 5.54/140,7
TRF-RJ45-8 4 0.89/22,6 0.83/21,1 4.26/108,2 5.26/133,6
Typical Attenuation1
1. Measured on an Agilent/HP 8753D network analyzer.
2. Operating temperature range –40°C to +85°C.
3. Electrical specifications at 25°C.
A
BC
40
30
20
10
0
-10
0.03 0.1 1 10 100 1000
Frequency (MHz)
Attenuation (dB) re: 50 Ohms
Differential Mode
Common Mode
This product is not RoHS-compliant. Contact Coilcraft
for current status or possible alternatives.
