Electronics Forum | Wed Sep 29 11:25:49 EDT 2010 | mazjal7
Hi, We are placing a Surface Mount connector on a flex circuit, we are planing on using SMT carriers to support the flex through the SMT process. Underneath the connector a stiffener needs to be adhere, I'm not sure if we should have the flex manu
Electronics Forum | Fri Sep 23 06:08:09 EDT 2011 | prakashpatil2609
Process Details for manufacturing Flex Circuit PCBA
Electronics Forum | Fri Oct 01 10:05:29 EDT 2010 | rrpowers
You don't necessarily have to bake the flex circuits, but you do have to worry about moisture. Polyimide is very hydroscopic, and depending on the flex construction, any moisture in the product can lead to delamination. Adhesive based flex circuits
Electronics Forum | Wed Sep 29 14:24:34 EDT 2010 | mazjal7
SWAG, Thank you for your suggestion, you brought a very good point.
Electronics Forum | Wed Sep 29 12:17:03 EDT 2010 | swag
You might try assembly carrier tape such as Tacsil on your fixtures. Beware - arrays are very diffult to run in SMT flex unless you have no fine pitch.
Electronics Forum | Fri Oct 01 08:15:02 EDT 2010 | rgduval
Is the stiffener a piece of FR4, or a component that needs to be installed? We've done a number of flex assemblies taht have a rigid stiffener, generally a piece of rigid flex, or FR4 that has the components mounted on it. This type of stiffener
Electronics Forum | Fri Oct 01 09:47:36 EDT 2010 | noid
Yes, they should be baked prior. We pre-bake all polyimide fabs, flex or not. They are prone to delam.
Electronics Forum | Fri Oct 01 13:09:18 EDT 2010 | clampron
Good Afternoon, How is the stiffener adheared? If it is laminated to the flex, it may help you with the surface planarity through reflow. If it put on with PSA, it may cause more problems then it would solve. PSA gets soft through the reflow. It may
Electronics Forum | Thu Nov 19 17:36:03 EST 1998 | Christopher Lampron
| Can someone please tell me where I might find detailed information on the processing of a double-sided flex circuitry design. I am looking for specifics such as methods of fixturing,printing,placing and reflowing.Things to keep in mind when process
Electronics Forum | Fri Jan 29 10:03:25 EST 2010 | jamyboy
The SMT MFG Process for Flex circuits is relatively the same as traditional SMT process, the key is your PCB supplier. The good flex circuit shops will supply the circuits in a rigid carrier or if Rigid/Flex the supplier will create a support structu
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