Electronics Forum | Thu Oct 14 04:28:29 EDT 1999 | Grace Chua
Hi there, I have quite a number of problematic bd due to warpage problem. I would like to know the method on how to measure PCB warpage, thus to decide on the dispositon of these boards. Another question, can these warp bd be rework/fix. Is there
Electronics Forum | Wed Sep 02 11:41:29 EDT 2020 | pradeep14
How to reduce the PCBA warpage issue after Reflow oven for 1mm PCB Thickness
Electronics Forum | Wed Sep 02 15:30:35 EDT 2020 | researchmfg
1. Reflow carrier 2. Reduce panel quantity and size
Electronics Forum | Wed Sep 02 16:55:29 EDT 2020 | emeto
Just what was said plus 3. the number of solid tabs can be increased for stability.
Electronics Forum | Sat Sep 12 09:24:33 EDT 2020 | majdi4
at first , you need to optimise your panel design ( lenght width & postage stamp ) , use an anti-buckling cable during first reflow , and you can put trays under your panel during first reflow..
Electronics Forum | Mon Sep 14 18:40:39 EDT 2020 | dwl
A reflow oven with Center rail support can help. If your volumes are too low to justify spending $$ on a proper carrier, titanium stiffeners applied to the PCB before it goes into reflow is a cheap, albeit manual solution.
Electronics Forum | Thu Aug 18 06:06:07 EDT 2016 | technotronix
Here is a PCBA Warpage calculate method after complete SMT/Through hole assembly Warpage calculation method = warping height / length of the curved edge
Electronics Forum | Fri Apr 08 05:10:10 EDT 2005 | siverts
What is Your customers requirements? Is the PCBA mounted with front/back connectors? Will the PCBA be mounded in a rack and connected to opposite connectors on the other side? In this case, if the warpage is more than approx 1-1.5 % You will then n
Electronics Forum | Wed Aug 17 06:30:50 EDT 2016 | thaneshsivanadian
Hi Guys, i have some doubt, may i know how to calculate the PCBA warpage after complete of SMT and through hole process? Do we have any calculation for that? And What is the acceptance level of warpage after complete assembly? Thanks, Thanesh
Electronics Forum | Wed Aug 17 17:17:45 EDT 2016 | davef
Warpage of a completed assembly is an uncommon requirement. I would ask whoever is laying that requirement on you to define how they would like you to measure it.
