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SM712.TCT PDF预览

SM712.TCT

更新时间: 2024-11-29 07:03:51
品牌 Logo 应用领域
商升特 - SEMTECH 二极管电视
页数 文件大小 规格书
6页 147K
描述
Asymmetrical TVS Diode for Extended Common-Mode RS-485

SM712.TCT 数据手册

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SM712  
Asymmetrical TVS Diode for  
Extended Common-Mode RS-485  
PROTECTION PRODUCTS  
Features  
Description  
The SM712 transient voltage suppressor (TVS) diode is  
designed for asymmetrical (12V to -7V ) protection in  
multi-point data transmission standard RS-485 applica-  
tions. The SM712 may be used to protect devices  
from transient voltages resulting from electrostatic  
discharge (ESD), electrical fast transients (EFT), and  
lightning.  
‹ 400 watts peak pulse power (tp = 8/20µs)  
‹ Transient protection for asymmetrical data lines to  
IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact)  
IEC 61000-4-4 (EFT) 40A (5/50ns)  
IEC 61000-4-5 (Lightning) 12A (8/20µs)  
‹ Protects two +12V to -7V lines  
‹ Low capacitance  
‹ Low clamping voltage  
‹ Solid-state silicon avalanche technology  
The SM712 features 400 Watts (tp = 8/20µs) of  
power handling capability to accommodate the higher  
transient voltage levels which may be expected in  
extended common mode applications. This provides  
higher equipment reliability and eliminates the “guess  
work” required when using zener diodes that are not  
rated to handle such transient conditions.  
Mechanical Characteristics  
‹ JEDEC SOT23 package  
‹ Molding compound flammability rating: UL 94V-0  
‹ Marking : 712  
‹ Packaging : Tape and Reel per EIA 481  
The SM712 replaces four discrete components by  
integrating two 12V and two 7V TVS diodes in a single  
package. The integrated design aids in reducing  
voltage over-shoot associated with trace inductance.  
The low clamping voltage of the SM712 minimizes the  
stress on the protected transceiver. The SOT23  
package allows flexibility in the design of “crowded”  
circuit boards.  
Applications  
‹ Protection of RS-485 transceivers with extended  
common-mode range  
‹ Security systems  
‹ Automatic Teller Machines  
‹ HFC systems  
‹ Networks  
Circuit Diagram  
Schematic & PIN Configuration  
SOT23 (Top View)  
www.semtech.com  
Revision 11/17/04  
1

SM712.TCT 替代型号

型号 品牌 替代类型 描述 数据表
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Asymmetrical TVS Diode for Extended Common-Mode RS-485
SM712 SEMTECH

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Asymmetrical TVS Diode for Extended Common-Mode RS-485
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