It’s clearly to get rid of moisture, probably to keep the steam from pushing BGAs or CSP packages off the board (maybe from moisture trapped in tented vias, micro vias or other places).
Lees verder: Alleen PCB: Een beginnershandleiding voor definitie, Voordelen, en testen
#PCB-productie
We plan to visit factory next week. Could we know more about how many basic PCB testings in EMS field?
Some online tutorials about soldering TH components, like transistors and ICs, are delicate components and can be easily damaged by heat. When it comes to soldering surface mount IC and components, some prefer to use a reflow oven which heats up the them to a temperature above the melting point of solder. So why?
I have some PCBs that were wave soldered but the vias still remain open, they are not filled nor plugged form what I can see. I do not see any solder on the annular rings of the vias either. How do they go about doing so?
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