Standard Reflow Profile for Leaded vs. Lead-Free 300 Temperature (°C) 250 Lead-Free Peak Temp. 235-250°C Leaded Peak Temp. 205-215°C 200 150 100 Soak Zone 60-90 sec 2 min max Reflow Zone 180-240 sec 50 0 0 50 100 150 Time (seconds) Lead-Free Profile 200 Leaded Profile 250 300