Hey Tom;
Yes.. there is a reason !!! They breakup the large
copper area, this reduces board warppage.
Unless, for electrical reasons you need a low
impedance path, why do you need a direct connection??
Louis T. Dallara                   
Printed Circuit Design Consultant   Routing for Performance not Connectivity!!
Under contact to Lockheed Martin Fairchild Systems
[log in to unmask]      http://www.waterw.com/~ldallara
 
> Does it make sense to use thermal connections on vias?
> Thermals were originally used on thru hole comps to increase
> solderability of the leads, but now that is not necessary for SMT.
> Is there any reason to use them for vias? 
> I've been using direct connection to the inner planes.
> 
> Tom Kavendek
> Lucent Technologies
> Murray Hill, N.J.
> [log in to unmask]
> 
> 

****************************************************************************
* The mail list is provided as a service by IPC using SmartList v3.05      *
**************************************************************************** 
* To unsubscribe from this list at any time, send a message to:            *
* [log in to unmask] with <subject: unsubscribe> and no text. *
****************************************************************************