2) Lead Temperature Soldering T °C SLD Reflow (SMD styles only), Leaded, 60−150 s above 183, 30 s max at peak − 240 Reflow (SMD styles only), Lead Free, 60−150 s above 217, 40 s max at peak − 265 Wave Solder (through hole styles only), 12 sec max − 310 2. Per IPC/JEDEC J−STD−020C. Table 4. THERMAL CHARACTERISTICS