Electronics Forum | Wed Feb 19 11:21:18 EST 2020 | john_kim
Thank you for your advice Jer. BTW, may I ask the model name which you have used ? I'd like to buy and try it. Does it work well for the bridge underneath of components ? Regards, John
Electronics Forum | Fri Aug 07 16:45:35 EDT 2020 | duso02
All URs require a long time to fully cure. And actually, most users do not reach full-cure before using the board. Even Humiseal 1A33 will be dry enough to handle after a very short time.
Electronics Forum | Wed Jun 17 15:20:18 EDT 2020 | rsatmech
Thank you for your valuable inputs. Current two SMT line is running and I have initiated to use two different pcb suppliers in each line. Do I need to check the plating details in issue pcba or random pcb. Kindly suggest.
Electronics Forum | Thu Jun 18 12:43:45 EDT 2020 | emeto
I would say you check FAB drawing and see if there is any strange value on the stackup. Usually board house should inform you of these.
Electronics Forum | Fri Jun 19 03:17:45 EDT 2020 | rsatmech
We also don't inspect any things in incoming PCBs. We have CMM but will be used when we see any abnormality. Kindly advise me on this.
Electronics Forum | Tue Jun 30 09:59:44 EDT 2020 | cph4w
Hi SRINI, Are you able to show X-ray of these 2 locations from other board w/o bridging? Void looks almost perfect circle which I never encountered before.
Electronics Forum | Tue Jun 30 10:25:37 EDT 2020 | rsatmech
Hi CPH, Thanks for your response. Sure I will share. But give me some time since we stopped SMT as of now. I will share you on 7/07/2020
Electronics Forum | Wed Jul 08 02:50:30 EDT 2020 | rsatmech
Hi DucHoang, Thanks for the response. I will share the images. We are using OSP boards and issue is not at particular BGA. Can you suggest me any methods to identify the pad contamination.
Electronics Forum | Sat Jul 11 03:01:29 EDT 2020 | researchmfg
The bubble inside BGA ball locate at via in pad and apply the resin plug hole.You shall check the cooper plating quality on PCB pad. If there is thin plating or broken on the pad then air will come from the resin plugged via and be trapped inside the
Electronics Forum | Tue Aug 04 11:14:54 EDT 2020 | rsatmech
Could you please enlight me on how to prove the issues by using RESIN PLUG HOLE method.
