Electronics Forum | Wed Jun 15 10:38:41 EDT 2016 | laynefelix
Hi everyone..i am new here. I am hardware design engineer and as per my experience PCBAs came out cold soldered after being reflowed the first time with ALPHA WS-820. The flux gel ALPHA WS 609 was supposed to be applied only onto the terminations of
Electronics Forum | Wed Jun 17 16:08:37 EDT 1998 | upinder singh
We are facing a problem of high contamination on boards after wave soldering. We want the contamination to be under 24 ugm/inch square. We are using a no clean flux with the spray fluxer unit of wave soldering. The contamination is higher on the end
Electronics Forum | Fri Jul 09 06:51:46 EDT 2010 | cobar
Try titanium edge stiffners on the PCB before making solder pallets.
Electronics Forum | Fri Jun 25 22:30:47 EDT 2010 | smthexi
i think you need to use a PCB central support. do you know that part ? it specializes in preventing PCB board from bowing during wave soldering.
Electronics Forum | Tue Jun 29 00:23:11 EDT 2010 | dontfeedphils
Is this a single PCB or a multi-up array? At the very least you should probably pick up a universal wave pallet, check out AGI or DMI. -Phil
Electronics Forum | Thu Jun 24 15:33:56 EDT 2010 | davef
Our best suggestion - get the copper balanced and if possible go to higher Tg materials.
Electronics Forum | Fri Jun 25 15:04:39 EDT 2010 | siddharth
Thanks for you suggestions, guys. davef, I am gonna get with my PCB suppliers and talk to them about copper balancing and checking the Tg of the materials they use. SC, I am working towards designing wave pallets for my boards and try your suggesti
Electronics Forum | Tue Jun 29 14:44:26 EDT 2010 | rgduval
There are some good suggestions here...reflow pallets, and copper balancing. We would also suggest verifying that your problem is not caused by moisture. How much time passed between first side and second side reflow, and how humid is the environme
Electronics Forum | Fri Jun 18 17:36:10 EDT 2010 | sid
Good afternoon all, I have been trying to find a solution to a defect I just noticed. After stencil printing and smt part placement on the secondary side of my boards, I run them through a wave soldering system. All my components got soldered perfe
Electronics Forum | Thu Jul 01 15:12:16 EDT 2010 | siddharth
Thanks to all for their inputs. @Hexielectronics, I am now trying to assemble the board by attaching it to a frame and removing the frame while waving it. I plan to put the boards back on the frame after the board cools down. Could you explain more
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