Table 2 Reflow Profiles (per Jedec J-STD-020D.1) Profile Feature Sn-Pb Eutectic Assembly Pb-Free Assembly 100 °C 150 °C 60-120 seconds 3 °C/second max. 183 °C 60-150 seconds For users Tp must not exceed the Classification temp in Table 2A. For suppliers Tp must equal or exceed the Classification temp in Table 2A 150 °C 200 °C 60-120 seconds 3 °C/second max. 217 °C 60-150 seconds For users Tp must not exceed the Classification temp in Table 2B. For suppliers Tp must equal or exceed the Classification temp in Table 2B Preheat/Soak Temperature Min (Tsmin) Temperature Max (Tsmax) Time (ts) from (Tsmin to Tsmax) Ramp-up rate (TL to Tp) Liquidous temperature (TL) Time (tL) maintained above TL Peak package body temperature (Tp) Time (tp)* within 5 °C of the specified classification temperature (Tc), see Table 2a & 2B 20* seconds 30* seconds Figure 5-1. J-STD-020D.1 Ramp-down rate (Tp to TL) 6 °C/second max. 6 °C/second max. Time 25 °C to peak temperature 6 minutes max. 8 minutes max. * Tolerance for peak profile temperature (Tp) is defined as a supplier minimum and a user maximum . Table 2A SnPb Eutectic Process - Classification Temperatures (Tc) Volume mm3 Volume mm3 <350 Package Thickness >=350 235 °C <2.5 mm 220 °C 220 °C 220 °C >=2.5 mm Table 2B Pb-Free Process -Classification Temperatures (Tc) Package Thickness <1.6 mm 1.6 mm - 2.5 mm >2.5 mm Volume mm3 <350 260 °C 260 °C 260 °C Volume mm3 350 - 2000 260 °C 250 °C 245 °C Volume mm3 >2000 260 °C 245 °C 245 °C Note: 1. The use of a higher Tp does not change the classification temperature (Tc). 2. All temperatures refer to topside of the package, measured on the package body surface. 3. Package volume excludes external terminals (e.g., balls, bumps, lands, leads) and/or nonintegral heat sinks. 4. Moisture sensitivity levels of components intended for use in a Pb-free assembly process shall be evaluated using the Pb-free classification temperatures and profiles defined in Tables 2 and 2B, whether or not Pb-free. Appendix A Solder Reflow Temperature Profile Classification Profile (Not to scale)