Page 194 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards
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• Soak. Warm the whole board to just below the solder melting point.
• Spike. Fast as you can, heat the board to above the melting point to reflow the board.
• Cool. Cool everything down before the components and board are damaged.
Each of this stages has precise temperatures and timings associated with it. A commercial reflow
oven will allow you to select from preset profiles to match the paste you are using and control all
aspects of the heating. Figure 7-19 shows the temperature profile of some leaded solder paste, and
Figure 7-20 shows the board in the author’s home-made oven.
FIGURE 7-19 Leaded solder paste reflow profile.
