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 | Tue Oct 07 22:15:12 EDT 2014 | padawanlinuxero
How to avoid /reduce warpage in long length PCB & > _1.6MM THICK PCB. You need to put it in a fixture or pallet to run it in the reflow oven, most common material use here is durostone for the pallets that we run in the reflow oven, we use Durosto
Electronics Forum | Tue Oct 07 08:44:49 EDT 2014 | emeto
Hi, 1. I will run the board on the mesh if single sided. 2. For double sided board, I will try stiffeners. 3. If stiffeners don't work, then you have to create a handling fixture(holds the board and has enough openings to let the air flow to the PC
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 | Fri Dec 17 02:52:40 EST 2010 | Jacki
Hi Dave Thanks however the Forums you mentioned isn't enough to solve my proble, PCB warpage after cooling down. Hope someone can advise me more.
Electronics Forum | Mon Jan 10 23:05:32 EST 2011 | aungthura
Hi Eadthem Your way isn't work for our big size Board(620x440x7mm).After pressing the Alu Bars on the edges, the warpage happened more wider.So, we r using clamps to adjust PCB expension. Anyway, thx for sharing.
Electronics Forum | Mon Dec 20 10:56:40 EST 2010 | remullis
7' is a typo, sorry for that. We have 7"x13". But I will be running some at 18" in a few months.
Electronics Forum | Sun Dec 19 23:22:11 EST 2010 | Jacki
Hi Rem Woo, ur board is such long one,7'. Our PCB is only 2' long but 3.5kg weight b4 solder. We use wave machine to solder it and PCB was sit on the pallet. all PCB side lengths are pressed by clamps. PCB was flat just after wave, however there was
Electronics Forum | Tue Dec 07 04:23:27 EST 2010 | Jacki
Dear All I hope I can get some advice of PCB experts in here.My problem is - after wave, our big board, 640x420x1.7mm, had a warpage when the board was cooled down after wave. PCB was flat while being warm.I had tried with many type of pallet and mad
Electronics Forum | Mon Jan 10 18:22:43 EST 2011 | eadthem
What we use for boards the engineers made to big is aluminum flat bar 1/8 to 1/16 thick about 1 inch wide. we fold it in 1/2 so it fits snuggly on the pcb and just press it on the ends before reflow. id assume the same thing would work on wave but
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