PCB Libraries, Inc. | https://www.pcblibraries.com/forum/topic2306&OB=ASC.html
. The problem is more obvious for QFN parts. When using the "least" setting the it looks like the toe is just too short and the solder creates a bubble shaped contact instead of a nice fillet
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-glossary-of-terms
. B Ball Grid Array (BGA) A surface-mount component containing a processor, and sometimes additional components, where the bottom has a grid of connection points with solder balls attached
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resources/solder-dictionary-of-terms
Solder Dictionary of Terms | Nordson EFD Search Arrow Black Arrow Right Arrow Youtube Twitter Facebook Paper Plane LinkedIn Zoom In Grid Envelope Earth Download File - Document 9 Boxes Browser Calendar Chart Click Icon Close
Heller Industries Inc. | https://hellerindustries.com/parts/7620/
? Reflow Soldering Problems Overview Causes & Defects – Reflow Soldering Solder Ball Defects Opensor Insufficient Solder Wicking Defects Tombstoning PCB Soldering PCB Bridging Defects PCB Dewetting PCB Nonwetting Circuit Board Voids PCB Delamination
Heller Industries Inc. | https://hellerindustries.com/parts/684762/
? Reflow Soldering Problems Overview Causes & Defects – Reflow Soldering Solder Ball Defects Opensor Insufficient Solder Wicking Defects Tombstoning PCB Soldering PCB Bridging Defects PCB Dewetting PCB Nonwetting Circuit Board Voids PCB Delamination
Heller Industries Inc. | https://hellerindustries.com/parts/2277-2/
? Reflow Soldering Problems Overview Causes & Defects – Reflow Soldering Solder Ball Defects Opensor Insufficient Solder Wicking Defects Tombstoning PCB Soldering PCB Bridging Defects PCB Dewetting PCB Nonwetting Circuit Board Voids PCB Delamination
Heller Industries Inc. | https://hellerindustries.com/parts/5833/
? Reflow Soldering Problems Overview Causes & Defects – Reflow Soldering Solder Ball Defects Opensor Insufficient Solder Wicking Defects Tombstoning PCB Soldering PCB Bridging Defects PCB Dewetting PCB Nonwetting Circuit Board Voids PCB Delamination
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/Vacuum-Void-Reduction-Reflow.pdf
/125 °C profiles. The key findings from the thermal cycling tests and subsequent failure analysis are as follows: ▪ X-ray and metallographic inspections showed that the solder paste was effective at producing extreme voiding in many of the ball locations
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/04/Vacuum-Void-Reduction-Reflow-1.pdf
/125 °C profiles. The key findings from the thermal cycling tests and subsequent failure analysis are as follows: ▪ X-ray and metallographic inspections showed that the solder paste was effective at producing extreme voiding in many of the ball locations
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/smd-solder-mask-defined-and-nsmd-pads_topic1768.html
. The NSMD BGA pad stack is necessary for the Ball to fully collapse around the pad edge securing it to the PCB - The SMD (Solder Mask Defined) BGA pad stack prevents the Ball Collapse
