Electronics Forum | Tue Sep 08 16:32:23 EDT 2015 | duso02
Commonly done with Parylene.
Electronics Forum | Wed Dec 22 21:14:53 EST 2004 | davef
IPC-FA-251 recommends 121*C for 30-60 minutes for 1 and 2 flex layer circuits. A rigid flex can take easily an hour per layer depending on the construction.
Electronics Forum | Fri Jul 24 16:39:16 EDT 2015 | cnotebaert
have done it in the past, used silicon as it will flex,, however its not the most robust material! tends to peel/flake off.
Electronics Forum | Wed Jul 29 11:28:54 EDT 2015 | pankyb1261
How many times does it have to flex. There are acrylic conformal coatings that can be bent once to 90 degrees or so
Electronics Forum | Wed Oct 26 14:28:12 EDT 2022 | emeto
Hello colleagues, I have a very long flex assembly that I run on a SMT carrier by bending assembly in the middle. This crates a curve after reflow, which I want to get rid if. Any ideas.
Electronics Forum | Tue Mar 21 19:34:32 EST 2006 | Tom Smykowski
Omar: I dealt with this so called "hot bar" process also, and you're right; it's neither reliable nor repeatable. The goal was to attach a flex LCD display to another flex circuit. The flex LCD was constructed of resin and conductive silver particl
Electronics Forum | Thu Jun 29 04:50:42 EDT 2023 | SMTA-70263692
This looks like it could be related to oxidation.Do you per-bake your pcb before assembly to remove any moisture inside your board panel?
Electronics Forum | Wed Nov 02 02:04:43 EDT 2022 | angela t
Bend it for mounting，if it can't be mounted by bending assembly. you can choose other pick and place machine which can handle this flex pcb. How long is this flex board? And do you use jigs when reflow? Could you please send a picture of the jig yo
Electronics Forum | Fri May 26 04:58:19 EDT 2023 | auriga2001
I agree with the two other replies. Left alone, it is a defect. If it's just excess adhesive or coating, you can use IPC-7711/7721 'Rework, Modification and Repair of Electronic Assemblies' for guidance on removing. Section 2.3.1 explains how to te
Electronics Forum | Fri Jan 08 10:11:15 EST 1999 | Tim
This is a question for those of you who actually assemble components onto a board. Any idea what the "industry standard" is for fall out on assembled PCB's? I realize that the controls put in place in your processes will effect your overall quality
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