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SMF05C
PROTECTION PRODUCTS
Applications Information
Device Connection for Protection of Five Data Lines
The SMF05C is designed to protect up to five unidirec-
PRELIMINARY
SMF05C Circuit Diagram
tional data lines. The device is connected as follows:
1
3
4
5
6
1. Unidirectional protection of five I/O lines is
achieved by connecting pins 1, 3, 4, 5 and 6 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 SMF05C near the input terminals or
connectors to restrict transient coupling.
Minimize the path length between the SMF05C 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.
Matte Tin Lead Finish
Matte tin has become the industry standard lead-free
replacement for SnPb lead finishes. A matte tin finish
is composed of 100% tin solder with large grains.
Since the solder volume on the leads is small com-
pared to the solder paste volume that is placed on the
land pattern of the PCB, the reflow profile will be
determined by the requirements of the solder paste.
Therefore, these devices are compatible with both
lead-free and SnPb assembly techniques. In addition,
unlike other lead-free compositions, matte tin does not
have any added alloys that can cause degradation of
the solder joint.
2
Protection of Five Unidirectional Lines
? 2004 Semtech Corp.
4
www.semtech.com
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相关代理商/技术参数
SMF05C_04 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:TVS Diode Array For ESD and Latch-Up Protection
SMF05C_05 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:5−Line Transient Voltage Suppressor Array
SMF05C_11 制造商:PROTEC 制造商全称:Protek Devices 功能描述:MULTI-LINE TVS ARRAY
SMF05C_12 制造商:PROTEC 制造商全称:Protek Devices 功能描述:MULTI-LINE TVS ARRAY
SMF05C-L 制造商:SEMTECH 功能描述:12V 8A TVS DIODES ARRAY 4 UNIDIRECTIONAL LINES
SMF05CT1 功能描述:TVS二极管阵列 5 Line TVS Array RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
SMF05CT1G 功能描述:TVS二极管阵列 5 Line TVS Array RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C
SMF05CT2 功能描述:TVS二极管阵列 5 Line TVS Array RoHS:否 制造商:Littelfuse 极性: 通道:4 Channels 击穿电压: 钳位电压:11.5 V 工作电压:2.5 V 峰值浪涌电流:20 A 安装风格:SMD/SMT 端接类型:SMD/SMT 系列: 最小工作温度:- 40 C 最大工作温度:+ 85 C