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SLVU2.8 Datasheet(PDF) 5 Page - Weitron Technology |
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SLVU2.8 Datasheet(HTML) 5 Page - Weitron Technology |
5 / 7 page WEITRON http://www.weitron.com.tw 5/7 19-Apr-07 SLVU2.8 Application Note Unidirectional Common-Mode Protection (Fig.9) The SLVU2.8 provides one line of unidirectional protection in a common-mode configuration as depicted in figure 9. Circuit connectivity is as follows: Line 1 is connected to Pin 3 Pins 1 and 2 are connected to ground Bidirectional Common-Mode Protection (Fig.10) Two SLVU2.8 devices provide one line of bidirectional protection in a common-mode configuration as depicted in fig.10 Circuit connectivity is as follows: * Line 1 is connected to Pin1 of Device 1 & Pin 2 of Device 2 * Pin 2 of Device 1 and Pin 1 of Device 2 are connected to ground * Pin 3 of both devices is not connected Bidirectional Differential-Mode Protection (Fig.11) Circuit connectivity is as follows: * Line 1 is connected to Pin1 of Device 1 & Pin 2 of Device 2 * Line 2 is connected to Pin 2 of Device 1 & Pin 1 of Device 2 Fig.9 Fig.10 Fig.11 The SLVU2.8 is ideal for providing protection for electronic equipment that is susceptible to damage caused by Electrostatic Discharge (ESD), Electrical Fast Transients (EFT) and tertiary lightning effects. This product is offered in a unidirectional configuration and provides both commonmode or differential-mode protection. Circuit Board Layout Protection 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. Two SLVU2.8 devices provide up to two lines of bidrectional protection in a differenitalmode configuration as depicted in fig.11 |
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