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differences between silkscreen & assembly layers

malih

 hi

what differences between silkscreen & assembly layers in allegro?

best regards

  • C Shiva

      Silkscreen text and lines are used to identify component refdes and outline (outline maynot be exact dimension) which you seeing on a board. But assembly line has a exact length of a componet, it will not be drawn on a board.

  • malih

     hi

    so wath differences between place bound & assembly

     thanks

  • C Shiva

      Placebound is used as a boundary of a component. It contains the height info of component and will be used for mechanical purpose like enclosure drawing.

  • Goblin60

    Malih,

    I think what you asking is why do you need silkscreen and an assembly drawing. I know a lot of people use only silkscreens and don't bother with assembly drawings. The adavantage of having an assembly layer is that it more accurately describes where a part is located. For example, when you are placing a refdes, you are placing with respect to other components, component leads, etc. In the assembly drawing you can place the text directly on the part in question. This makes it easier on the manufacturing folks. Hope that helps.

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