FIXED RESISTORS Updated Reflow Soldering Profile Riverside, California - November 12, 2007 - Bourns® Fixed Resistors Product Line has updated the recommended Reflow Soldering Profile on its datasheets for the following product families: - CR Series (CR0201, CR0402, CR0603, CR0805, CR1206, CR2010, CR2512) - CRP Series (CRP0603, CRP0805, CRP1206) - CRH Series (CRH0603, CRH0805, CRH1206) - CRT Series (CRT0402, CRT0603, CRT0805, CRT1206) - CA Series (CAT10, CAY10, CAY16, CAY17, CAT25) - PWR Series (PWR1913/2615/4525/6327) The recommended reflow profile is shown below: 275 <1> Maximum of 20 seconds between 260 °C peak +255 °C and +260 °C <1> 255 °C 225 Temperature (°C) 220 °C 190 °C 175 60 - 90 seconds Ramp Down 6 °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 N0711