Bourns Soldering Profile for Standard (Tin-Lead Terminations) Chip Resistors, Chip Arrays, and Resistor Networks 275 <1> 5 seconds maximum at 245°C <1> 245°C 225 Temperature (°C) 170°C 183°C 175 150°C 60 - 90 seconds 125 Ramp Down 6°C/second 60 - 120 seconds 75 Ramp Up 3°C/second maximum 25 0 50 100 150 Time (seconds) 200 250 300