Soldering Profile for Bourns' Large SMD Components (per JEDEC J-STD-020D) 275 <1> Maximum of 20 seconds between +245°C and +250°C <1> 245°C 250°C peak 225 220°C Temperature (°C) 190°C 60 - 90 seconds 175 Ramp Down 3°C/second 150°C 125 60 - 120 seconds 10 seconds minimum 75 Ramp Up 3°C/second maximum 25 0 50 100 150 Time (seconds) 200 250 300