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Recent content by ngkl99

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    Can anyone share more about "Transplant PCB"

    yeah, how to request supplier to control this process. (guideline or know how) we ourself also lack of experience
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    Can anyone share more about "Transplant PCB"

    Hi all, the transplant PCB means the X-out PCB: http://us.jetpcb.com/service/faq_detail.aspx?CategoryID=17&fid=445&b=h http://www.dataweek.co.za/news.aspx?pklNewsId=25207 If anyone has more info how the PCB maker manage this process, can you share with me. My company is initiating a project...
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    PCB Design Mistake-Forgot to Import Latest DXF

    Hi marce, I like your idea of update the dxf filename with version/numbers. About correlate to other data, it means if we don't follow the latest DXF, then we can't proceed to nxt process right? But I need some examples to be clearer... TQ! - - - Updated - - - I can think of one. Do DXF...
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    Can anyone share more about "Transplant PCB"

    Hi, I come across the term transplant PCB. It means if the PCB panel has 2 cavity, and if cavity 1 quality has problem, PCB maker will take it out and proceed manufacturing of cavity 2. Can anyone share more details? Thanks!
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    PCB Design Mistake-Forgot to Import Latest DXF

    u r right. checklist: forgot job flow: forgot add new: meet the requestor face to face before cad out, to avoid missed email (actual cause)
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    PCB Design Mistake-Forgot to Import Latest DXF

    Hi, recently my colleague did a mistake. He forgot to import the latest DXF into the PCB data and modify accordingly. May I know what is the best preventive counter measure to avoid repeating the mistake? Thanks!
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    Mouse Bite PCB Perforation Design

    Hi FvM, it means in this case, use hand separation right? But is hand separation OK even when SMD parts are on the board?
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    Mouse Bite PCB Perforation Design

    Hi, may I know if mouse bite design is applicable for 1) FR-4 PCB material and 2) automatic cutter instead of hand separation process? Thanks! - - - Updated - - - attached is the mouse bite design
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    to find the root cause...
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    The problem is before soldering process, the board warps more (initial condition). Soldering process only slightly increase the warp value... can't go for double-sided because cost up...
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    hi marce, single-sided pcb with 1/2 oz copper...
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    hi Barry, our members went to the PCB maker site, they found the boards were within specs. Usually maker will send to us immediately after the PCB has been made. But when the boards reached us, it was warped.
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    currently this board has solder mask at one side of board only, i am thinking whether solder mask at both side will improve the board or not. means : A side: copper and solder mask B side: no copper, but have solder mask
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    Hi Barry, thanks for the reply Initial condition means from the manufacturer (blank board). Soldering process is reflow (lead free solder)... board stiffeners / pallette is not preferable by production because cost reason... headache.. thanks!
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    FR4 Single-sided PCB (244x256mm) 1.2mm thickness warp

    Hi, i am facing problem with pcb warpage (>1.5mm) at initial condition. Any novel solution? I tried, different cavity direction, add/remove copper, but still fail. Thanks! - - - Updated - - - here is the image of my board
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