What is the premise of this PCB assembly

What is the premise of this PCB assembly note?

2016/4/4 18:45:39

pcb assembly pcb production

I have read a note:Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125 degree for 24 hours.What does this mean?

Guillaume?Leblanc

2016/11/18 18:29:28

Having this note is because that a pcb should be free from moisture prior to processing. Moisture can migrate into tiny holes, which will influence the performance of this PCB.

dogukansahin94

2016/9/4 3:07:46

It is for gettimg rid of moisture, probably to keep the steam from pushing BGAs or CSP packages off the board.

nagysusu

2016/6/19 2:03:20

In order to avoid copper oxide and moisture make solderability poor. It is also the resaon PCBs are sealed in plastic in storage for production.

What is the premise of this PCB assembly note?

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