For lead-free products, what types of solder pastes are available and would work in board reflow at 260°C maximum temperature?
At 260°C and below, the predominant lead-free solder pastes are: Sn/Ag4.0/Cu.5 217°C (240-255°C) Sn/Ag2.5/Cu.8/Sb.5 216°C (225-240°C) Sn/Ag3.5 221°C (245-255°C) Sn/Cu.75 227°C (250-260°C) Sn/Bi3.0/Ag3.0 213°C (225-244°C) NOTE: This list is a summary of solder paste types commonly used in the industry. Maxim Integrated Products doesn’t recommend any usage of these pastes nor guarantees any benefits by using them.
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