ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-frequently-asked-questions
. Two process changes may be possible to minimize or eliminate the problem. Aperture reductions designed to decrease the quantity of paste trapped between the part and board solder mask
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/RSS_smt-paste-mask-stencil-printer-for-beginners_topic2592.xml
. What is the stencil thicknesses that you use? Do these Stencil Printers use laser technology? Are the aperture openings Rounded Rectangle?
| http://etasmt.com/cc?ID=te_news_bulletin,23574&url=_print
from the solder before it solidifies. Process and design-related causes: • Improper solder volume due to improper land design • Improper solder volume due to blocked stencil aperture
1st Place Machinery Inc. | http://www.firstplacemachinery.com/first_place_smt_pcb_test_xray_faxitronxray.html
. The Control Panel is straight forward and easy to operate. Controls include: Field of View = Increase / Decrease, Zoom = In / Out, Camera Aperture
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914.html
. There are several controls in V2021 Footprint Expert that allow you to control the paste mask aperture sizes and openings. If you need to control the aperture size and spacing, you must move the QFN footprint to FP Designer and edit the pad stack / Paste Mask layer. In " Tools > Options > Pad Stack Rules > SMD Thermal Tabs
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914_post11617.html
. They almost never recommend corner radius on a thermal pad. A rectangle thermal pad is a Flash Aperture for Gerber data. A Chamfered or Radius thermal pad is drawn copper ploy shape and takes long to process
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/qfn-thermal-via-pitch_topic2914_post11613.html
. They almost never recommend corner radius on a thermal pad. A rectangle thermal pad is a Flash Aperture for Gerber data. A Chamfered or Radius thermal pad is drawn copper ploy shape and takes long to process
PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/topic2914&OB=ASC.html
. There are several controls in V2021 Footprint Expert that allow you to control the paste mask aperture sizes and openings. If you need to control the aperture size and spacing, you must move the QFN footprint to FP Designer and edit the pad stack / Paste Mask layer. In " Tools > Options > Pad Stack Rules > SMD Thermal Tabs
PCB Libraries, Inc. | https://www.pcblibraries.com/forum/qfn-thermal-via-pitch_topic2914.html
. There are several controls in V2021 Footprint Expert that allow you to control the paste mask aperture sizes and openings. If you need to control the aperture size and spacing, you must move the QFN footprint to FP Designer and edit the pad stack / Paste Mask layer. In " Tools > Options > Pad Stack Rules > SMD Thermal Tabs
