4. Then apply tin to the bottom of the chip. After the tin is applied, it should be flattened to reduce the tin as much as
possible, but it cannot be eliminated.
5.Adjust the temperature of the hot air gun, the actual air output is about 240 degrees, because the quality of the air gun
is different, adjust it according to the actual situation.
6. Put the chip on the pad, be sure to place it straight, and then blow it with a hot air gun at a uniform speed until the
tin melts, usually within 20 seconds.
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