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参数资料
| 型号： | SMF12.TGT |
| 元件分类： | TVS二极管 - 瞬态电压抑制 |
| 英文描述： | 200 W, UNIDIRECTIONAL, 4 ELEMENT, SILICON, TVS DIODE |
| 封装： | PLASTIC, SC70-5L, 5 PIN |
| 文件页数： | 5/8页 |
| 文件大小： | 184K |
| 代理商： | SMF12.TGT |
5
2003 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
SMF05 and SMF12
SMF Circuit Diagram
Protection of Four Unidirectional Lines
Device Connection for Protection of Four Data Lines
The SMFxx is designed to protect up to four unidirec-
tional data lines. The device is connected as follows:
1. Unidirectional protection of four I/O lines is
achieved by connecting pins 1, 3, 4, and 5 to the
data lines. Pin 2 is connected to ground. The
ground connection should be made directly to the
ground plane for best results. The path length is
kept as short as possible to reduce the effects of
parasitic inductance in the board traces.
Circuit Board Layout Recommendations for Suppres-
sion of ESD.
Good circuit board layout is critical for the suppression
of ESD induced transients. The following guidelines are
recommended:
Place the SMFxx near the input terminals or con-
nectors to restrict transient coupling.
Minimize the path length between the SMFxx and
the protected line.
Minimize all conductive loops including power and
ground loops.
The ESD transient return path to ground should be
kept as short as possible.
Never run critical signals near board edges.
Use ground planes whenever possible.
2
13
4
5
Applications Information
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相关代理商/技术参数 |
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| SMF130A | 制造商:EIC 制造商全称:EIC discrete Semiconductors 功能描述:ZENER OVERVOLTAGE TRANSIENT SUPPRESSOR |
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