3004202330-1-Wang Huiquan-1. How to weld the smd ic on the chip adapter board? Prepare tools for welding the integrated circuit of the table, such as a good soldering iron (the finer the head, the better) and solder paste. For fine pin spacing, first apply a layer of solder paste on the clean pad, and then use a clean constant temperature soldering iron to thin a layer of Solder Pad (according to observation, some transfer board has been painted for the students), put the elements to align, the tin on the fixed diagonal, and then randomly pick one side with the vertical pin of the soldering iron to slide slowly, at the same time, press the edge of the component with a little effort; then weld the opposite side in the same way; then the other sides. At last, use a magnifier to check the pins one by one to prevent re-welding of bad contacts. -Good! 2. What should I do if I weld components on the lab board wrong? There are two methods to remove components from the lab board. One is to dial the crude wire (copper wire) to the outer skin, use a soldering iron to heat the tin on the lab board to take down the components to the liquid, put a bunch of copper wire on it, press it with a soldering iron, and then slowly pull out, more than the soldering tin will be cleaned up, very useful and very clean; the other is to add the soldering tin after the experiment board, the excess tin can be knocked off, however, when a component is removed, the component is easily damaged, which is not conducive to reuse. Of course, you can also purchase or borrow a "Tin suction device", which is very useful. -Good!
