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Suresh R
11/08/05 03:09
Read: 1051 times
Chennai
India


 
#103408 - Thermal relief's
Responding to: Andy Peters's previous message
The suggestions were useful.

Andy Peters said:


The ground plane on the top layer should connect to all of the components on the top that have ground nodes (make sure to use thermal relief pads!). Finally, stitch the two ground planes together using lots of vias.



I have used the top layer copper pour to connect the ground node of all components.The top layer copper pour is stitched to the bottom layer copper pour through vias.

now my doubt is,
Should the thermal relief pads be used only at ground pins of components or even in vias which connect the top layer copper pour to the bottom layer copper pour (ground plane).


Andy Peters said:


The ground track and Vcc track runs on both sides of the board


I'm not sure what you mean by this. There shouldn't be a ground "track" (meaning trace?) on either layer.

-a



from the above statement I mean that the component gnd and vcc tracks are routed on both the sides of PCB using vias. will it give rise to any noise in the design

your comments please.

Suresh.

List of 16 messages in thread
TopicAuthorDate
two layer PCB      Suresh R      11/04/05 23:56      
   +5VDC also drives PhotoMOS relays      Suresh R      11/05/05 00:13      
   Solid ground plane is needed!      Kai Klaas      11/06/05 05:18      
      what i have done is      Suresh R      11/07/05 10:19      
         what you have done ...      Andy Peters      11/07/05 11:36      
            Thermal relief's      Suresh R      11/08/05 03:09      
               You need a solid ground plane      Kai Klaas      11/08/05 08:03      
                  I want the best money can buy, but do no      Erik Malund      11/08/05 08:22      
                  Thermal relief in PCB's      Suresh R      11/08/05 11:24      
                     An illustration...      Kai Klaas      11/09/05 06:26      
                        went through the design but      Suresh R      11/10/05 04:46      
                           Thermal reliefs were demonstrated      Kai Klaas      11/10/05 05:30      
                           who are you posting to????      Erik Malund      11/10/05 06:14      
               thermal reliefs only ease soldering        Sasha Jevtic      11/08/05 12:37      
                  Resistance calculation for thrmal relief      Suresh R      11/08/05 22:35      
                     you better read .....        Abhishek Singh      11/10/05 05:56      

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