Home > Community > Forums > PCB Design > BGA Package Design

Email

* Required Fields

Recipients email * (separate multiple addresses with commas)

Your name *

Your email *

Message *

Contact Us

* Required Fields
First Name *

Last Name *

Email *

Company / Institution *

Comments: *

 BGA Package Design 

Last post Wed, Jun 27 2007 2:37 AM by archive. 4 replies.
Started by archive 27 Jun 2007 02:37 AM. Topic has 4 replies and 1276 views
Page 1 of 1 (5 items)
Sort Posts:
  • Wed, Jun 27 2007 2:37 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
    • Posts 88
    • Points 4,930
    BGA Package Design Reply

    Hi all, well first of all I'm very novice using Allegro PCB Editor but have some experience with Orcad Layout. I have to design a 516 BGA package for a freescale MPC8313E and I'm using the Package Symbol Wizard of the PCB editor with the default bgapad.pad but after compiling the symbol into a .psm file I get the error "No match for begin or end pad layer in layout" and the symbol appears without pads. Does anybody know what I'm doing wrong? And, Is there another tool that comes along with PCB Editor for designing BGA packages? Thank's in advance.


    Originally posted in cdnusers.org by luissito
    • Post Points: 0
  • Wed, Jun 27 2007 2:55 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
    • Posts 88
    • Points 4,930
    RE: BGA Package Design Reply

    Hi, The padstack bgapad.pad is incorrect and has no top pad features and no soldermask. Create your own smd padstack and it works fine. KP


    Originally posted in cdnusers.org by kp
    • Post Points: 0
  • Wed, Jun 27 2007 3:11 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
    • Posts 88
    • Points 4,930
    RE: BGA Package Design Reply

    But the default padstack "bgapad.pad" should have top layer, soldermask_top layer and pastemask_top features defined on it!!
    I think the library file has been edited.
    Pls check your padstack by opening in a "Pad designer" which can be found in your installation files.
    Other option is try running DBDoctor on your padstack file.

    Hope this helps.
    Best Regards,
    Kishore


    Originally posted in cdnusers.org by kishore
    • Post Points: 0
  • Mon, Jul 2 2007 4:54 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
    • Posts 88
    • Points 4,930
    RE: BGA Package Design Reply

    Thank's all,
    I have another question regarding the pads. Well, I have created the BGA footprint and the pads seem to be void, I mean I only see void circles instead of filled pads. I have reviewed the classes and subclasses against a TI BGA footrpint and the classes\subclasses => Pin\Top and Pin\Soldermask_Top are activated. I wonder what I'm doing wrong.
    Thank's in advance.


    Originally posted in cdnusers.org by luissito
    • Post Points: 0
  • Mon, Jul 2 2007 5:01 AM

    • archive
    • Top 75 Contributor
    • Joined on Fri, Jul 4 2008
    • Posts 88
    • Points 4,930
    RE: BGA Package Design Reply

    Go to "Setup"->"Drawing options" and on the "Display" tab, enable the check box "Filled pads".


    Originally posted in cdnusers.org by kishore
    • Post Points: 0
Page 1 of 1 (5 items)
Sort Posts:
Started by archive at 27 Jun 2007 02:37 AM. Topic has 4 replies.