1. Correct components:SMT patch processing requires that the type, model, nominal value and polarity of each assembly number component must comply with the product assembly drawing and BOM requirements, and must not be pasted in the wrong position.2. Accurate position:During SMT patch processing, the ends or pins of the components should be aligned and centered with the pad pattern as much as possible, and it is also necessary to ensure that the component solder end contacts the solder paste pattern.The self-positioning effect of the chip components at both ends is relatively large. When mounting, more than 3/4 of the width direction of the component overlaps the pad, and the two ends in the length direction overlap the corresponding pad and contact the solder paste pattern. It can be self···