T606.F (04/12)1pulseelectronics.com
T3/DS3/E3/STS-1 TRANSFORMERS
Designed for T3, DS3, E3 and STS-1 Interfaces
RoHS peak reflow temperature rating: 245�C
Return loss meets requirements of G.703
Fast rise time compatible with standards
Through hole and surface mount packages available
UL recognized
USA 858 674 8100 Germany 49 7032 7806 0 Singapore 65 6287 8998 Shanghai 86 21 62787060 China 86 755 33966678 Taiwan 886 3 4356768
Electrical Specifications @ 25°C - Operating Temperature 0°C to +70°C
RoHS
Compliant
Part Number
Turns
Ratio
(±2%)
OCL Primary
(μH MIN)
OCL @ -40�C
(μH MIN)
L
(μH MAX)
w/w
(pF MAX)
Bandwidth
75 System
(MHzTYP)
Isolation Voltage
(Vrms MIN)
Package/
Schematic
Primary Pins
PE-65664NL 1:2CT 35 20 .12 10 - 1500 QC-1/B THT 2-6
PE-65779NL 1:4CT 150 - .30 15 - 1500 QC-1/B THT 2-6
PE-65856NL 1:1.73CT 50 - .10 12 .60-300 1500 LC-1/C THT 4-6
PE-65966NL 1:1 40 - .10 10 .200-340 1500 LC-1/E THT 4-6
PE-65967NL 1:1 40 - .10 10 .200-340 1500 LS-1/E SMT 4-6
PE-65968NL 1:2CT 19 - .06 10 .250-500 1500 LS-1/C SMT 4-6
PE-65969NL 1:2CT 19 - .06 10 .250-500 1500 LC-1/C THT 4-6
PE-68629NL 1:1 40 - .10 5 - 3000 HC-1/A THT 1-5
Electrical Specifications @ 25°C
RoHS
Compliant
Part Number
Turns Ratio
(Pri:Sec ±5%)
OCL @ 25�C
(mH MIN)
w/w
(mH MIN)
L
(μH MAX)
DCR Pri
(Ω MAX)
DCR Sec
(Ω MAX)
Isolation Voltage
(Vrms MIN)
Package/
Schematic
Primary
Pins
PE-64934NL 1:1 1.20 25 0.50 0.70 0.70 1500 HC-1/1S 1-2
Packaging Information
Package Type Part Weight Parts/Tube Parts/Reel Reel Diameter Tape Width Pitch
LS-1 SMT 0.6 grams 70 600 13 inches 24mm 16mm
LC-1 THT 0.6 grams 65 - - - -
HC-1 THT 1.2 grams 60 - - - -
QC-1 THT 0.8 grams 60 - - - -
L
L
C
C
T606.F (04/12)2pulseelectronics.com
T3/DS3/E3/STS-1 TRANSFORMERS
Designed for T3, DS3, E3 and STS-1 Interfaces
QC-1
LC-1
Mechanicals Schematics
Dimensions: Unless otherwise specified, all tolerances are ±
Dimensions: Unless otherwise specified, all tolerances are ±
Inches
mm
Inches
mm
.010
0,25
.010
0,25
B
6
2
5
1
3
C
3
1
4
6
2
E
3
1
4
6
T606.F (04/12)3pulseelectronics.com
T3/DS3/E3/STS-1 TRANSFORMERS
Designed for T3, DS3, E3 and STS-1 Interfaces
HC-1
LS-1
Mechanicals Schematics
1S
5
6
1
2
6
2
5
1
A
C
3
1
4
6
2
E
3
1
4
6
Dimensions: Unless otherwise specified, all tolerances are ±
Dimensions: Unless otherwise specified, all tolerances are ±
Inches
mm
Inches
mm
.010
0,25
.010
0,25
4pulseelectronics.com
T3/DS3/E3/STS-1 TRANSFORMERS
Designed for T3, DS3, E3 and STS-1 Interfaces
T606.F (04/12)
Application Notes
For More Information
Pulse Worldwide
Headquarters
12220 World Trade Drive
San Diego, CA
92128
U.S.A.
Tel: 858 674 8100
Fax: 858 674 8262
Pulse Europe
Einsteinstrasse 1
D-71083 Herren-
berg
Germany
Tel: 49 7032 78060
Fax: 49 7032 7806 135
Pulse China Headquarters
B402, Shenzhen Academy of
Aerospace Technol-
ogy Bldg.
10th Kejinan Road
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 Road
West
Shanghai 200336
China
Tel: 86 21 62787060
Fax: 86 2162786973
Pulse South Asia
135 Joo Seng Road
#03-02
PM Industrial Bldg.
Singapore 368363
Tel: 65 6287 8998
Fax: 65 6287 8998
Pulse North Asia
3F, No. 198
Zhongyuan Road
Zhongli City
Taoyuan County 320
Taiwan R. O. C.
Tel: 886 3 4356768
Fax: 886 3 4356823 (Pulse)
Fax: 886 3 4356820 (FRE)
Performance warranty of products oered 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, 2012. Pulse Electronics, Inc. All rights reserved.
Transformer Selection Guide
Chip
Manufacturer IC
Surface Mount Through Hole (3000 VRMS)
Transmit Receive Transmit Receive Transmit Receive
Lucent T7296 PE-65967NL - PE-65966NL - PE-68629NL -
Exar XR-T7296 PE-65967NL - PE-65966NL - PE-68629NL -
SSI 78P236, DS3 PE-65968NL PE-65967NL PE-65969NL PE-65966NL - PE-68629NL
SSI 78P7200, DS3 PE-65968NL PE-65967NL PE-65969NL PE-65966NL - PE-68629NL
SSI 78P7200, E3 PE-65968NL PE-65968NL PE-65969NL PE-65966NL - -
SSI 78P2361, STS-1 PE-65968NL PE-65967NL PE-65969NL PE-65966NL - PE-68629NL
SSI 78P2362, E3 PE-65968NL PE-65967NL PE-65969NL PE-65966NL - PE-68629NL
MRT TXC-02050 E3 PE-65968NL PE-65967NL PE-65969NL PE-65966NL - PE-68629NL
ART 02020 DS3, STS-1 PE-65967NL PE-65967NL PE-65966NL PE-65966NL PE-68629NL PE-68629NL
Silicon
Systems
Transwitch
Through Hole (1500 VRMS)
1. The transformers have been developed for use as
transmit and receive transformers in T3 or DS3 links,
using bit rates of 44.736 Mbps and B3ZS coding on
coaxial cable. The characteristics allow compliance
with the Pulse templates of CCITT G.703 as well as
ATT T.A.34. The transformers are also suitable for E3
interfac at 34.368 Mbps with HDB3 coding or STS-1
applications, at 51.84 Mbps according to Bellcore TA-
NWT-000253. The LC-1 and QC-1 packages are pin -
compatible with T1-1 and T4-1 6-pin DIP packages.
2. Bandwidth specifications are typical in a 75 Ω system.
Return loss meets the requirements of G.703. Materials
used in the products are UL94-V0 recognized. Products
meet the requirements of IEC 695-2-2 (Needle Flame
Test).
3. The surface mount LS-1 package is available with
optional Tape & Reel packaging. To order, add a “T”
sux to the part number (e.g. PE-65967NLT).
4. The Transwitch MRT TXC-02050 chip is also designed
to operate in 6.312 and 8.448 Mbps interfaces. A 1:1
transformer (PE-64934) is recommended.
