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Allegro PCB SI,Allegro PCB Editor

  • Want to change D2PAK footprint with TO263-3 on Orcad/Allegro PCB Editor

    I have a PCB *.BRD file. No schematic no netlist. On board 03 D2PAK footprint placed U28, U29, U30. I want to replace a only U29 footprint D2PAK with To263-3. Any body know the procedure to replace the footprint without schematic and netlist.
    Posted to PCB Design (Forum) by AamirZ on Tue, Nov 20 2012
  • Allegro 16.6: Easing PCB Design for Multi-Gigabit/Second Signals

    Got a few picoseconds to spare? If you're a PCB designer working with a multi-Gbit/second serial link interface such as PCI Express 3.0 or a DDR memory interface, maybe not. Two new features in the Cadence Allegro 16.6 PCB design solution - announced today (Sept. 25, 2012) at PCB West - aim to help...
    Posted to Industry Insights (Weblog) by rgoering on Tue, Sep 25 2012
  • What's Good About PCB SI PDN Analysis? 16.5 Has Many New Enhancements!

    As clock and data frequencies increase and high-speed systems become more densely populated, noise-free power delivery becomes a major challenge for PCB design. When fast switching devices change state simultaneously, power flow ripple propagates through the power delivery system as noise that varies...
    Posted to PCB Design (Weblog) by Jerry GenPart on Wed, Jun 6 2012
  • NetList export from OrCAD to PADS or ALLEGRO

    Exploring more options to "communicate" through different CAD software. I'm now using Cadence Design Entry CIS to work on the schematic, and would like to export the netlist and import it into PADS and also ALLEGRO board design. For PADS, when I export the netlist through: Tools -->...
    Posted to PCB Design (Forum) by PCB EXPERT on Tue, Oct 18 2011
  • What's Good About Retaining Electrical Constraints? Look to SPB16.5 and See!

    Currently, many of the SPB products support extended nets, better known as Xnets. Xnets are created automatically when a signal model is assigned to a component and that signal model defines that a connection is to be made between two pins of the component. This creates an Xnet that connects the nets...
    Posted to PCB Design (Weblog) by Jerry GenPart on Mon, Aug 8 2011
  • converting library footprints from protel to allegro

    Hi All, I have some basic doubt in converting library footprints from protel to allegro. Is it possible to convert ? Moreover am using allegro 15.2ver .In this there is no option to import protel board files. It has only import-->pads & pcad. Please help me with the procedure to do this if its...
    Posted to PCB Design (Forum) by Anonymous on Thu, Nov 25 2010
  • PCB autorouter(spectraa) not converging

    Hi, I am making my first pcb with a xilinx fpga device(256 pin BGA package).I am simply connecting the all I/O's to 4 standard 40 pin connectors.Are padstacks necessary for PCB routing??.I have drawn the schematic in Capture imported it to Layout_Plus and autorouted it. But after 3 hours of autorouting...
    Posted to PCB Design (Forum) by bennyn1 on Thu, Sep 2 2010
  • Regarding Xnet properties getting lost

    Hi, I am currently using 15.7 Allegro PCB Design XL. I have assigned Models to components to assign XNET properties. Whenever iam importing the latest netlist the Xnet properties are getting lost. Our schematic engineers are using Mentor Dx Designer to generate netlist in .tel format. Every time I import...
    Posted to PCB Design (Forum) by kingshar on Wed, May 26 2010
  • Regarding Models

    Hi All, I am currently using 15.7 Allegro PCB Design XL. I have assigned Models to components to assign XNET properties. Whenever I am changing the board file name is getting changed or when i am sharing the .brd filw iwth any of my collegues the Models are getting lost and thenit is throwing DRC's...
    Posted to PCB Design (Forum) by kingshar on Wed, May 26 2010
  • launch allegro_free_viewer_16-3 with a Macro

    Hello, I would like to automatize the opening of Allegro free viewer and the display of my test-points all-in-one. I did some macro to display test-points and now I wondering how to launch-it automaticaly (by script) Let me know if you have any sugestion. Regards, Florent PS: I work on Windows XP OS
    Posted to PCB Design (Forum) by Flta on Wed, Mar 3 2010
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