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参数资料
| 型号： | SMF24C-T7 |
| 厂商： | PROTEK DEVICES |
| 元件分类： | 参考电压二极管 |
| 英文描述： | 100 W, UNIDIRECTIONAL, 5 ELEMENT, SILICON, TVS DIODE |
| 封装： | SC-70, 6 PIN |
| 文件页数： | 4/5页 |
| 文件大小： | 81K |
| 代理商： | SMF24C-T7 |
SMF05C
thru
SMF24C
4
05138.R9 5/07
www.protekdevices.com
APPLICATION NOTE
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic
Compatibility (EMC) protection. The following
guidelines are recommended:
The protection device should be placed near the
input terminals or connectors, the device will
divert the transient current immediately before it
can be coupled into the nearby traces.
The path length between the TVS device and
the protected line should be minimized.
All conductive loops including power and ground
loops should be minimized.
The transient current return path to ground
should be kept as short as possible to reduce
parasitic inductance.
Ground planes should be used whenever
possible. For multilayer PCBs, use ground vias.
The SMFC Series are TVS arrays designed to protect I/O or data lines from the damaging effects of ESD or EFT. This product provides both
unidirectional and bidirectional protection, with a surge capability of 100 Watts P
PP per line for an 8/20s waveshape and ESD protection > 25
kilovolts.
UNIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 1)
The SMFC Series provides up to four (4) lines of protection in a common-mode
configuration as depicted in Figure 1.
Circuit connectivity is as follows:
Line 1 is connected to Pin 1.
Line 2 is connected to Pin 3.
Line 3 is connected to Pin 4.
Line 4 is connected to Pin 6.
Pin 2 is connected to ground.
BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 2)
The SMFC Series provides up to five (5) lines of protection in a differential-mode
configuration as depicted in Figure 2.
Circuit connectivity is as follows:
Line 1 is connected to Pin 1.
Line 2 is connected to Pin 3.
Line 3 is connected to Pin 4.
Line 4 is connected to Pin 5.
Line 5 is connected to Pin 6.
Pin 2 is not connected.
Figure 1 - Unidirectional Configuration
Common-Mode I/O Port Protection
3
1
5
6
2
4
LINE 1
LINE 2
LINE 3
LINE 4
I/O
PORT
Figure 2 - Bidirectional Configuration
Differential-Mode I/O Port Protection
3
1
5
6
2
4
LINE 1
LINE 2
LINE 3
LINE 4
I/O
PORT
LINE 5
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