Two reflow passes: one traceable assembly routeTwo reflow passes: one traceable assembly route01 · Side APrint → inspect paste → place → reflow → inspect02 · Support and invertVerify underside clearance, carrier and component retention03 · Side BPrint → inspect paste → place → reflow → inspect both sides04 · Finish the routeThrough-hole work if needed → test → clean/coating if specified³Ô¹Ïtv | Engineering schematic · not to scale · illustrative, not measured evidence