Imagineering, Inc. | https://www.pcbnet.com/blog/the-role-of-pcb-assembly-and-fabrication-in-the-aerospace-industry/
with immersion gold coating (ENIG) and immersion silver. Hot air solder leveling (HASL) is a type of PCB finish that involves dipping the PCB into molten solder, which covers exposed copper surfaces. The PCB is then passed between hot air knives to
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2018/07/pan_APEX06.pdf
% Sn finish OSP over Cu pad Sn63Pb37, Type 3 powder, No-clean flux 1206, 0805, 0603, 0402 all 100% Sn finish HASL SnPb over Cu pad The test vehicle designed is shown in Figure 1
Heller Industries Inc. | https://hellerindustries.com/wp-content/uploads/2022/04/pan_APEX06-1.pdf
% Sn finish OSP over Cu pad Sn63Pb37, Type 3 powder, No-clean flux 1206, 0805, 0603, 0402 all 100% Sn finish HASL SnPb over Cu pad The test vehicle designed is shown in Figure 1
Surface Mount Technology Association (SMTA) | https://www.smta.org/icsr/speaker_forms/Paper-Format-Requirements.doc
. Immersion silver surface finish eliminated due to corrosion risk Alternative finish must meet ICT and solderability requirements Investigate several alternatives (OSP, ImSn, ENIG, and LF HASL) PCB laminate may change from what was used on DT and NB products
Surface Mount Technology Association (SMTA) | https://www.smta.org/knowledge/journal.cfm
Abhijit Dasgupta Abstract 29-1 A Comparative Study of Copper Corrosion Products Formed at Two Hot Spring Sites Masamitsu Watanabe, Masaaki Takaya, Morihiko Matsumoto, Jun'ichi Sakai Abstract 2015 28-4 Effect of PCB Surface Finish on Sn Grain Morphology and
