Electronics Forum: how to fix coplanarity (Page 1 of 5)

Micro BGA coplanarity

Electronics Forum | Thu Feb 20 11:57:48 EST 2003 | mdm4ua

I placed a micro bga using flux paste and ran it through my oven and it came out as if someone had pushed down on one side. I can find no reason for this, has anyone ever seen this and how did you fix it?

How to fix flex bent after reflow

Electronics Forum | Wed Nov 02 01:35:07 EDT 2022 | angela t

How long is the whole strip? Also, what type of pick and place machine are you using?

How to fix flex bent after reflow

Electronics Forum | Mon Oct 31 13:00:46 EDT 2022 | emeto

:) Yes, I was thinking on this too. Still looking for other options though.

How to fix flex bent after reflow

Electronics Forum | Mon Oct 31 13:01:58 EDT 2022 | emeto

It travels on the SMT carrier bent through all he process.

How to fix flex bent after reflow

Electronics Forum | Mon Oct 31 20:31:06 EDT 2022 | stephendo

Are you calibrated to NIST traceable standards?

How to fix flex bent after reflow

Electronics Forum | Tue Nov 01 19:36:58 EDT 2022 | emeto

This is the concept

How to fix flex bent after reflow

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

How to fix flex bent after reflow

Electronics Forum | Thu Oct 27 13:11:03 EDT 2022 | proceng1

so you bend it to go in? Can you not let it lay flat? We run flex on carriers, but nothing that large. We also run 48inch long boards, but they are aluminum.

How to fix flex bent after reflow

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.

How to fix flex bent after reflow

Electronics Forum | Thu Oct 27 18:34:33 EDT 2022 | emeto

I don't have equipment that can handle this size of a board. Do you see any challenges on printing 48" board?

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