Electronics Forum: flexible boards (Page 1 of 25)

smt on flexible board

Electronics Forum | Sun Dec 19 10:02:55 EST 1999 | ron chua

Hi, how to ensure flexible boards do not warp after reflow and still remain flat for subsequent operations. What is the best way to hold and transport these strips from one process to another. Thanks!

Re: smt on flexible board

Electronics Forum | Mon Dec 20 07:09:03 EST 1999 | Christopher Lampron

Ron, The simplest way to process fexible PCB's that I have found is to use a process carrier fixture. There are companies that manufacture process carriers that are capable of holding flex through stencil, placement and reflow. The carriers are capab

Re: smt on flexible board

Electronics Forum | Mon Dec 20 17:34:17 EST 1999 | Dave F

Ron: Chris is correct that there is a bunch of fixture fabricators that make good products that will serve your purpose. Other fixture fabricators can be found in the archives. Problems with these fixtures are: 1 Out-rageously expensive 2 Very lo

Re: smt on flexible board

Electronics Forum | Mon Dec 20 19:09:54 EST 1999 | Chris

If your flex circuit is only populated on one side, you can have the PCB vendor palletize the flex for you. What you do is have the flex circuit laminated to 062" FR4 using a thermoset adhesive like Dupont WA. Standard flex circuit adhesive. Howev

Assemby of flexible printed circuits

Electronics Forum | Fri May 18 23:48:02 EDT 2012 | mspcb

Hi, Since you're looking information about flexible printed circuits,a book entitled "Printed Circuit Boards R. S. Khandpur" could give you lot of information about flex circuits from Design, Fabrication, and Assembly Phase. The book contains compr

Assemby of flexible printed circuits

Electronics Forum | Mon May 21 10:25:16 EDT 2012 | swag

Ask for board fiducials if you're running arrays. Global fids on the panel do not work well. One handy product we use on flex is "Tacsil". Works well on SMT pallets as well as router operation. It's double sticky stuff that helps hold on to the P

Flexi boards and uBGA

Electronics Forum | Thu Jul 06 12:06:12 EDT 2006 | pavel

Rob, do you have any tip on reliable supplier of "really flat" flexible pcb? We tried several but all with issues. Thank you. Pavel

laser marking boards

Electronics Forum | Thu Jun 28 09:11:19 EDT 2012 | davef

I though this was a good article on picking a part numbering scheme and since you weren't getting any takes figured I throw this out there and maybe get a conversation going. Part number system: How to get started Filed under: Item and File Man

Assembly of flexi (flexible) circuit boards

Electronics Forum | Thu Jun 26 09:04:43 EDT 2003 | caldon

We had a "Spring loaded" fixture that pulled the Flex tight and used loads of Board supports. There were pins that went through the Connectors holes and held the flex firm. We only had a few components so it was no problem. Lucky for us because the f

Assembly of flexi (flexible) circuit boards

Electronics Forum | Thu Jun 26 03:27:35 EDT 2003 | loz

We currently have a requirement to build flexi circuits and mount two 40 way, 20 thou connectors at each end. The flexi pcb's arrived in singlulated format. Ideally we would like to have the circuits panelised for machine building as hand placing the

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