smd = solder mask defined pad. nsmd = non solder mask defined ...
PCB Design For Solder Mask Defined Footprints
To Be or Not To Be NSMD or SMD - that IS the Question - Nexlogic
Introduction of Solder Mask and Applications - The Engineering Knowledge
Should you place solder mask over BGA pads? Do you know why? | Tom Hausherr | #HighlightsRF - YouTube
BGA Pad Creation: SMD vs NSMD? | MacroFab
What is a Pad in PCB Design and Development | Sierra Circuits
Thin Foil Printing in Today's Miniaturized World: Do Printing Rules Change?
BGA Design Guidelines for PCB designers – zfpcba
Copper Defined Pads & Soldermask Defined Pads - ALLPCB.com
How does solder mask layer work? - FAQ - KiCad.info Forums
How to Order Boards with Solder Mask Defined Pads - JLCPCB: Help & Support
BGA Land Patterns. BGA Pads. SMD (Solder Mask Defined Pads) and NSMD (Non-Solder Mask Defined Pads) , SMD & NSMD
Copper Defined vs. Solder Mask Defined pad design for BGA soldering strength | I am a Manufacturing Process Engineer (MPE)
Solder Mask Defined and Non-Solder Mask Defined in PAD - Digikey.com Navigation and Terminology - Engineering and Component Solution Forum - TechForum │ Digi-Key
pcb - Eagle - non solder mask defined (NSMD) pads - Electrical Engineering Stack Exchange