T1/E1/CEPT/ISDN-PRI
INTERFACE MODULES
Dual Surface Mount Transformer Modules,
1500 Vrms, Extended Temperature Range
RoHS peak reflow temperature rating 245°C
Optimized for enhanced EMC performance
Extended temperature range
Dual SMT package contains transformers with common
mode chokes on both transmit and receive channels
Models matched to leading transceiver ICs
Patented Interlock Base construction for high reliability
UL1950 approved
Electrical Specifications @ 25°C
RoHS
Compliant
Part Number
T1212NL
T1215NL
T1217NL
T1219NL
Turns Ratio
2
(Pri:Sec ± 2%)
Secondary
OCL @ 25°C
(mH MIN)
1.20
1.20
1.20
1.20
L
L
(µH MAX)
C
W
/
W
(pF MAX)
DCR Pri
(Ω MAX)
Package/
Schematic
Primary Pins
EXTENDED TEMPERATURE RANGE MODELS
1
–
OPERATING TEMPERATURE
-40°C
TO
+85°C
.60
.60
.60
.60
35
30
25
35
.90
.70
.60
.90
AN/1
AN/1
AN/1
AN/1
1-3, 4-6
1-3, 4-6
1-3, 4-6
1-3, 4-6
1CT:1CT & 1CT:2CT
1CT:1.41CT & 1CT:1.41CT
1CT:2.42CT & 1CT:2.42CT
1CT:2.4CT & 1CT:1CT
1. Extended Temperature Range Models
— For extended temperature range transformers (-40°C to +85°C operating temperature range), OCL (Open Circuit Inductance)
is specified at both -40°C and +25°C. At -40°C, OCL is 600 µH minimum. All other parameters are specified at +25°C only. Standard temperature range is 0°C to +70°C.
2. Turns ratio
is specified primary:secondary (CT = Center Tap).
3. Standard packaging
for the surface mount package is anti-static tubes. Optional Tape & Reel packaging can be ordered by adding a “T” suffix to the part number,
(i.e. T1212NLT).
Mechanical
AN
.675
MAX
17,15
12X
7
Part Number
1
.085
2,16
DATE CODE
Schematic
.120
3,05
.050
TYP
1,27
.030
0,76
1
1
12
11
10
9
8
7
.640
16,26
.400
10,16
12
.600
MAX
15,24
.456
MAX
11,58
6
.500
12,70
2
3
4
5
6
.100
2,54
.100
TYP
2,54
SUGGESTED PAD LAYOUT
.340
MAX
8,64
.010 / .020
0,25 / 0,51
.040 / .050
1,02 / 1,27
0°-8°
.004/0,10 MAX
Dimensions:
Inches.
.010
Unless otherwise specified, all tolerances are ±
mm
0,25
Weight
. . . . . . . . . . . . . . .4.0 grams
Tape & Reel
. . . . . . . . . . . . 250/reel
Tube
. . . . . . . . . . . . . . . . . . 30/tube
USA 858 674 8100 • Germany 49 7032 7806 0 • Singapore 65 6287 8998 • Shanghai 86 21 32181071 • China 86 755 33966678 • Taiwan 886 3 4643715
www.pulseeng.com
1
T660.C (10/09)
T1/E1/CEPT/ISDN-PRI
INTERFACE MODULES
Dual Surface Mount Transformer Modules,
1500 Vrms, Extended Temperature Range
Application Notes
1.
2.
ET Product
— All coils have an ET product of 10 V-µsec minimum.
Flammability
— Materials used in these products are recognized as
UL94-VO approved. Products meet the requirements of IEC 695-2-2
(Needle Flame Test).
Balance Characteristics
— The transformers meet the requirements
for longitudinal balance of FCC part 68.
Common Mode Rejection Ratio
— the CMRR for all transformers is
better than 50 dB at 1 MHz.
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.
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.
50-100 KHz
100 KHz-2 MHz
2-3 MHz
8.
9.
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:
Longitudinal Voltage:
800 V peak, 10/560 µsec
2,400 V peak, 10/700 µsec
3.
4.
5.
Isolation Voltage
— 100% of transformers are tested during production to the
specified isolation voltage level.
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.
6.
10. Transformer Selection Guide
— Please contact Pulse Application Engineering
or see our website for the latest Pulse Transformer Selection Guide.
Frequency
Return Loss
XMIT
RCV
9 dB
12 dB
15 dB
18 dB
11 dB
14 dB
For More Information:
Pulse Worldwide
Headquarters
Pulse Europe
Pulse China Headquarters 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
Einsteinstrasse 1
12220 World Trade Dr. D-71083 Herrenberg
San Diego, CA 92128
Germany
U.S.A.
www.pulseeng.com
Tel: 858 674 8100
Fax: 858 674 8262
B402, Shenzhen Academy of
Aerospace Technology Bldg.
10th Kejinan Rd.
High-Tech Zone
Nanshan District
Shenzen, PR China 518057
Tel: 49 7032 7806 0
Tel: 86 755 33966678
Fax: 49 7032 7806 135 Fax: 86 755 33966700
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.
www.pulseeng.com
2
T660.C (10/09)
Analog electronics
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