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P3100SBLRP 其他数据使用手册 - Littelfuse（力特）
制造商:
Littelfuse（力特）
分类:
晶闸管
封装:
DO-214AA-2
描述:
LITTELFUSE P3100SBLRP 电路保护器, 275V, DO-214AA
Pictures:
3D模型
符号图
焊盘图
引脚图
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P3100SBLRP数据手册
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若手册格式错乱，请下载阅览PDF原文件
High Speed Transmission Equipment
http://www.littelfuse.com 3 - 8 © 2004 Littelfuse, Inc.
+1 972-580-7777 SIDACtor
®
Data Book and Design Guide
Protection Circuitry
Longitudinal protection was not used at either the ADSL Transceiver Unit – Central Office
(ATU-C) interface or the ADSL Transceiver Unit – Remote (ATU-R) interface due to the
absence of earth ground connections. (Figure 3.8) In both instances, the P3500SC MC
SIDACtor device and the 0461 1.25 TeleLink fuse provide metallic protection. For ATUs not
isolated from earth ground, reference the HDSL protection topology.
Figure 3.8 ADSL Protection
Component Selection
The P3500SC MC SIDACtor device and 0461 1.25 TeleLink fuse were chosen to protect
the ATUs because both components meet GR 1089 surge immunity requirements without
the use of additional series resistance. Although the P3100 series SIDACtor device may be
used to meet current ANSI specifications, Littelfuse recommends the P3500 series to avoid
interference with the 20 V
P-P
x DSL signal on a 150 V rms ringing signal superimposed on a
56.5 V battery.
HDSL Circuit Protection
HDSL (High-bit Digital Subscriber Line) is a digital line technology that uses a 1.544 Mbps
(T1 equivalent) transmission rate for distances up to 12,000 feet, eliminating the need for
repeaters. The signaling levels are a maximum of ±2.5 V while loop powering is typically
under 190 V. (Figure 3.9)
TIP
RING
ADSL
chip set
P3500SC MC
0461 1.25
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