Solder Profile for Bourns Model DR221, DR331 and DR332 Data Line Chokes 300 <3> 260°C 255°C 250 <1> Max. of 70 seconds > 200°C <2> Max. of 50 seconds > 230°C <3> Max. of 10 seconds > 255°C 230°C <2> Temperature (°C) 200 <1> 150 120 - 150 seconds 100 Ramp-down 5°C/second maximum 50 Ramp-up 4°/second maximum 0 0 50 100 150 Time (seconds) 200 250 300