Soldering Profile for Bourns Lead-Free Chip Inductors and Power Chokes 275 <1> Maximum of 10 seconds between +255°C and +260°C 260°C peak <1> 255°C 225 220°C Temperature (°C) 190°C 60 seconds maximum 175 Ramp Down 5°C/second 150°C 125 120 - 150 seconds 10 seconds minimum 75 Ramp Up 4°C/second maximum 25 0 50 100 150 Time (seconds) 200 250 300