1 Reply Latest reply on Jan 18, 2012 1:05 AM by yu.yanfeng

    Holes overlapped or milling plated?


      Good morning,


      I have to create a new cell in Expedition for the next power relay. This relay has the power contacts in rectangular shape and the manufacturer recommend to create a rectangular milling plated but I don't know how to created. What's the best option? some holes overlapped or to do a milling plated in the pad. In this case, how to do it? ?


      Best regards.



        • 1. Re: Holes overlapped or milling plated?

          There is no a best option to deal with this case, whatever you use Expeditionpcb or Allegro.  A common method is use special drill symbol  and add notes in fab drawing ,tell pcb fabs to route those slot holes. Not like Allegro which allows to define mutiple holes for padstack, Expeditionpcb doesn't allow it.  However, In Expeditionpcb, you  have two options:

          Option# 1: define a rectangle hole(punch) for the padstack, add a note like "all punched holes should be routed..." in fab drawing. You get the benifit, however, your pcb fabs have to prepare the route data. Due to Expeditonpcb seperately output those puched holes, so it's easy to prepare the route data.

          Option #2: define a normal hole(drill) for the padstack. At last stage of work, you add  rectangle contour around the padstack. You pcb fabs will get benifits becaue Expeditiopcb will automatically output the route data


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