Page 193 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards
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Populating the Board
Starting with the smallest, lowest-lying components and at the far end of the board, place components
on the pads using tweezers until all the components are in place (Figure 7-18).
FIGURE 7-18 Populated board.
The board is now ready for cooking.
Baking the Boards
If you have a proper reflow oven, then baking the boards is pretty much as simple as putting them in
and pressing a button. Behind the scenes, there is some fairly careful temperature control going on.
Solder paste requires a certain profile of changing temperature over time for it to do a good job of
soldering components in a reflow oven. It has to go through four distinct stages:
• Preheat. Activate the flux.
