Hi Steve!

The formula that has been floating around for a while is that you get
30-grams of surface tension for every square inch of pad surface....

-Steve Gregory-


> Question?
>
> There is a formula somewhere which I can use to calculate the maximum
> allowable mass of a component in relation to the pad lands. Basically I
> want to make sure our designers do not put components on the underside
> of the PCB which are going to fall off during doublesided reflow.
>
> I would like to point out that this is a design for manufacturability
> question, not an attack on the tentative grasp on reality some card
> designers have.
>
> Steve.
>