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CHAPTER 3 SOLDERING CONDITIONS
| (3) Moisture removal characteristics |
Figure 3-2-5 shows the moisture absorption of a sample equivalent to when the sample is baked at 125°C for 10 and 20 hours, respeclively, when the sample is baked at the lower temperatures. This data is shown for reference. If it is necessary to bake at the lower temperature 90°C, it will take seven times as long to remove the moisture as if bake at 125°C. If the sample is based at 70°C, the baking time is about 15 times longer than at 125°C. Note that please bake at 125°C when possible. Because the package cannot be dried further depending on the environments. Also note that too long a baking time may cause oxidization of the leads. |
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