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PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_minimum-gang-solder-mask-web_topic2381.xml
:29amIn my 36 year PCB design career, I have never seen a Gang Mask on a BGA. And I would not recommend that you do that. There must be Solder Mask between every BGA pad to prevent solder bridging under the package. 
Precision PCB Services, Inc | https://precision-pcb-services-inc.com/products/srt-training-calibration-and-certification
. Solder mask breakdown - how to prevent it, how to fix it. Basic Design Considerations BGA removal and replacement process. Inspection and interpreting x-ray results
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/minimum-gang-solder-mask-web_topic2381_post9770.html
. And I would not recommend that you do that. There must be Solder Mask between every BGA pad to prevent solder bridging under the package
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/minimum-gang-solder-mask-web_topic2381_post9766.html
. And I would not recommend that you do that. There must be Solder Mask between every BGA pad to prevent solder bridging under the package
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/minimum-gang-solder-mask-web_topic2381_post9766.html
. And I would not recommend that you do that. There must be Solder Mask between every BGA pad to prevent solder bridging under the package
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2381&OB=ASC.html
. And I would not recommend that you do that. There must be Solder Mask between every BGA pad to prevent solder bridging under the package
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/minimum-gang-solder-mask-web_topic2381.html
. There must be Solder Mask between every BGA pad to prevent solder bridging under the package. Stay connected - follow us! Twitter - LinkedIn Batiskaff Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 30 Apr 2018 Status: Offline Points
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_pcb-via-terms-and-applications_topic1596.xml
. Tenting means covering via with solder mask. This is a requirement for any vias under a BGA to prevent solder bridging short circuits during the assembly process. Capped Vias
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_blind-via-with-smaller-solder-mask-opening_topic1110.xml
? Possible to send the contact please. Many thanks. Best Regards,NB. Blind Via With Smaller Solder Mask Opening : All vias under BGA's need... Author: Tom HSubject: 1110Posted: 18 Sep 2013 at 7:04pmAll vias under BGA's need to be "Tented" with solder mask to prevent solder bridging under the component