Electronics Forum | Fri Jan 21 13:27:38 EST 2011 | mosborne1
Try baking your boards first to remove the moisture. Moisture and boards that have not been drilled properly will cause pin hole or blow holes in PTH. Also take a look the surface of the pads before printing. You maybe contaminating the surfaces of t
Electronics Forum | Sun Jan 23 17:26:48 EST 2011 | piter
Hi In my experience try to change component to another batch or anther manufacturer it is very often problem in reflow when components have strange finish
Electronics Forum | Thu Apr 07 10:33:23 EDT 2011 | markhoch
The Part Data sheet should specify whether or not the part can withstand the Wave Solder. (I've wave soldered many Tant Caps)It sounds like you need a higher volume of SMD Adhesive. How are you applying the adhesive?
Electronics Forum | Fri Apr 29 08:28:17 EDT 2011 | markhoch
Is it possibly being caused by surface contaminants on your PCB? Or possibly flux residue? Is this a one time occurance, or are you seeing it regularly? Is it happening in other areas on your PCB or in just this location? Can you please provide more
Electronics Forum | Wed Jul 11 22:48:54 EDT 2012 | joeion
It is correct to remove moisture in PCB by baking. But I think the time and temperature is too little. According to our experience, it should be more than 60min at 120 centigrade degrees.
Electronics Forum | Sun Nov 16 19:05:45 EST 2014 | warwolf
Seen it. We use a lead free process, sometimes our supplier will use a lead process silk screen that burns at a lower temp. The HASL coat was still SN100CL.
Electronics Forum | Sun Apr 12 18:16:28 EDT 2015 | davef
Beveling machine: * Seetrax Bevcut [ http://www.seetrax.com/edge_finishers.htm ] * Radoll Design Bevel Master
Electronics Forum | Wed Aug 19 03:58:47 EDT 2015 | pcbman
hello , friend, it is better to finish the bevel process before assembly,you can send me the pcb gerber file I'll check for you the best panlization.
Electronics Forum | Tue Jun 07 21:10:53 EDT 2016 | deanm
The first thing I would do is give Alpha a call and talk to their tech support about it.
Electronics Forum | Sun Jun 12 09:29:41 EDT 2016 | davef
I'd guess that the interconnect pads on the BGA have poor solderability. Confirm this with testing at an independent lab. Work with your supplier to resolve the issue.
