PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/when-should-a-pad-use-windowpane-paste-mask_topic2600_post10599.html
0.05 mm because the hot solder runs out to the Toe, Heel and Side fillet. But the thermal tab is floating on 0.125 mm of solder. The rule is simple. If the terminal lead pad does not have a Toe, Heel and Side fillet then it requires paste mask reduction so that the final result post reflow oven is about
ASCEN Technology | https://www.ascen.ltd/Products/Solder_paste_printer/394.html
) for Reflow Soldering. Send Enquiry Download brochure Product Details Application: SMT PCB Solder Paste Screen Printer for SMT is needed to screen print solder paste onto the printed circuit board (PCB