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How to put via in the center of BGA pins

ColinLiu

Hi sir,

How to put VIA in the center of BGA pins in below case. You can see Distance a is smaller than b. 

When i set Route/create fanout/ pin via space-centered, it put the via as picture shows.

It seems it is just the center of distance a. But I think it is better to put via in point C.

I can not find easy way to put it. And I am afraid it is not exact center If i move it by manual .

Is there any proper command to achieve it?

  • oldmouldy

    It doesn't look like dimensions "a" and "b" are the same. A BGA fanout would be expecting a regular X / Y matrix and being able to use a 45 degree "dogbone".

  • ColinLiu
    in reply to oldmouldy

    thanks，sir.

    yes, the distance a is not the same as distance b. do you means it is not proper to using FANOUT in this case? and what is the proper command in this case?  i am afraid it is not exact center if add vias by manual and adjust it to the center by observe. what is your normal pratice?thanks.

  • steve
    in reply to ColinLiu

    The only choice you have is to add one via based on the centre (draw a line from pin to pin diagonally then add the via using right click - snap pick to - segment midpoint) then once you have one create a via structure (Route menu) then use that for the fanout tool.

  • ColinLiu
    in reply to steve

    Thanks steve, I got your point. And create such via structure successful.

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