www.pulseeng.com 2 T660.C (10/09)
For More Information:
Pulse Worldwide
Headquarters
12220 World Trade Dr.
San Diego, CA 92128
U.S.A.
www.pulseeng.com
Tel: 858 674 8100
Fax: 858 674 8262
Pulse Europe
Einsteinstrasse 1
D-71083 Herrenberg
Germany
Tel: 49 7032 7806 0
Fax: 49 7032 7806 135
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Rd.
High-Tech Zone
Nanshan District
Shenzen, PR China 518057
Tel: 86 755 33966678
Fax: 86 755 33966700
Pulse North China
Room 2704/2705
Super Ocean Finance Ctr.
2067 Yan An Rd. West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South
Asia
135 Joo Seng Rd.
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: 65 6287 8998
Fax: 65 6287 8998
Pulse North Asia
3F, No. 198
Zhongyuan Rd.
Zhongli City
Taoyuan County 320
Taiwan R. O. C.
Tel: 886 3 4356768
Fax: FRE 886 3 4356820
Pulse: 886 3 4356823
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
© Copyright, 2009. Pulse Engineering, Inc. All rights reserved.
1. ET Product — All coils have an ET product of 10 V-µsec minimum.
2. Flammability — Materials used in these products are recognized as
UL94-VO approved. Products meet the requirements of IEC 695-2-2
(Needle Flame Test).
3. Balance Characteristics — The transformers meet the requirements
for longitudinal balance of FCC part 68.
4. Common Mode Rejection Ratio — the CMRR for all transformers is
better than 50 dB at 1 MHz.
5. Crosstalk Attenuation — In the packages which contain transmit
and receive transformers side by side, sufficient crosstalk attenuation
is achieved by the inherent characteristics of the toroid cores as well
as by their proper positioning. The crosstalk attenuation is typically
65 dB or better.
6. Return Loss — ITU-T G.703 and the European national regulatory
documents specify minimum return loss levels. The transformers will
allow these limits to be complied within the situations where they
are applicable.
Frequency 50-100 KHz 100 KHz-2 MHz 2-3 MHz
Return Loss
XMIT 9 dB 15 dB 11 dB
RCV 12 dB 18 dB 14 dB
7. Surge Voltage Capability – All transformers and chokes meet surge voltage
tests according to the most stringent regulatory documents, when used with the
proper voltage and current suppression devices:
Metallic Voltage: 800 V peak, 10/560 µsec
Longitudinal Voltage: 2,400 V peak, 10/700 µsec
8. Isolation Voltage — 100% of transformers are tested during production to the
specified isolation voltage level.
9. General Information — The transformers are specifically designed for use in
1.544 Mbps (T1), 2.048 Mbps (CEPT) and ISDN Primary Rate Interface (PRI)
applications. They are matched to the majority of the line interface transceiver
ICs currently available. Use of the proper transformer allows the interface circuit
to comply with ITU-T G.703 and other standards regarding pulse waveform,
return loss, and balance.
10. Transformer Selection Guide — Please contact Pulse Application Engineering
or see our website for the latest Pulse Transformer Selection Guide.
Application Notes
T1/E1/CEPT/ISDN-PRI
INTERFACE MODULES
Dual Surface Mount Transformer Modules,
1500 Vrms, Extended Temperature Range
