6. Recommended Reflow Temperature Profile

Temp(°C)

240 °C

230 °C

180 °C

0° C

60-120sec

10-30sec

Time (s)

5 sec (Peak 245°C)

6.1 Flux, Solder

6.2 Reflow soldering conditions

6.3 Reworking with soldering iron

• Use rosin-based flux. Don’t use highly acidic flux with halide content exceeding 0.2wt%(chlorine conversion value).

• Use Sn solder.

• Pre-heating should be in such a way that the temperature difference between solder and product surface is limited to 150℃ max.

Cooling into solvent after soldering also should be in such a way that temperature difference is limited to 100℃ max.

Unwrought pre-heating may cause cracks on the product, resulting in the deterioration of products quality.

Pre-heating

150°, 1 min

Tip temperature

290° max

Soldering iron output

30w max

Soldering time

3 second max

• The following conditions must be strictly followed when using a soldering iron