HEIGHT DIM INCLUDES TERMINALS ALSO, TURNS RATIO: 1:2.42:1:2.42
高度
7.24 mm
长度
28.58 mm
制造商序列号
TX1299NL
安装特点
SURFACE MOUNT
最高工作温度
85 °C
最低工作温度
-40 °C
包装方法
TUBE
物理尺寸
L28.58XB12.32XH7.24 (mm)
表面贴装
YES
变压器类型
TELECOM TRANSFORMER
宽度
12.32 mm
文档预览
T1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port SMT Transformer Modules with
IC Side Protection
RoHS peak reflow temperature rating 245°C
Eight transformers in a low profile surface mount package
Includes IC Side Protection Circuit on each channel to suppress
low voltage transients
Compatible with PMC-Sierra’s Comet chip (PM4354)
Extended temperature range
Minimum Isolation voltage: 1500 V
RMS
UL recognized
Electrical Specifications @ 25°C — Operating Temperature -40°C to +85°C
RoHS
Compliant
Part Number
TX1299NL
Turns Ratio
(Pri:Sec ±2%)
Transmit
1:2.42
Receive
1:2.42
OCL Lineside
(mH MIN)
1.2
C
W
/
W
(pF MAX)
25 & 25
L
L
(µH MAX)
.50 & .50
DCR
( MAX)
.70 & .50
Note: When ordering Tape & Reel packaging, add a “T” suffix at the end of the part number, e.g. TX1299NLT.
Mechanical
QTERA
Schematic
Weight
.............. 5.0 grams
Tape & Reel
.......... 250/reel
Tube
......................15/tube
Dimensions:
Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
USA 858 674 8100
Germany 49 7032 7806 0
Singapore 65 6287 8998
Shanghai
86 21 62787060
China 86 755 33966678
Taiwan 886 3 4356823
www.pulseeng.com
T677.C (10/09)
T1/CEPT/ISDN-PRI TRANSFORMERS
Quad Port SMT Transformer Modules with
IC Side Protection
Application Notes
1. ET Product:
All coils have an ET product of 10 V-µsec minimum.
2. Flammability:
Materials used in the 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 longitudi-
nal balance of FCC part 68.
4. Common Mode Rejection Ratio:
The CMRR for all transformers is better than
50 dB at 1 MHz. A typical test circuit is shown below.
6. Return Loss:
ITU-T G.703 and European national regulatory documents specify
minimum return loss levels. The transformers will allow these limits to be com-
plied within the situations where they are applicable.
Frequency
Return Loss
XMIT
REC
50-100 KHz
9 dB
12 dB
100 KHz-2 MHz
15 dB
18 dB
2-3 MHz
11 dB
14 dB
7. Surge Voltage Capability:
All transformers and chokes meet surge voltage
tests according to the most stringent regulatory documents when system
designs include 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:
These transformers are specifically designed for use
in 1.544 Mbps (T1), 2.048 Mbps (CEPT) and ISDN Primary rate (PRI) interface
applications. 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.
5. Crosstalk Attenuation:
In the dual 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 50 dB or better from 100 KHz
to 10 MHz. This result was established with the test circuit shown below.
For More Information:
Pulse Worldwide
Headquarters
Pulse Europe
Pulse China Headquarters Pulse North China
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
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
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
Tel: 49 7032 7806 0
Fax: 49 7032 7806 135
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.
