Defective components in DIP plug-in processing
3. Poor soldering after DIP plug-in processing - component foot length
Features: After the lead of the part eats tin, the length of the lead of the solder joint exceeds the specified height.
Acceptable standard: φ≦0.8mm → the length of the wire is less than 2.5mm; φ＞0.8mm → the length of the wire is less than 3.5mm
Influence: 1. It is easy to cause tin cracking. 2. The amount of tin is easy to be insufficient. 3. It is easy to form insufficient safety distance.
1. Reasons for the length of the component feet:
1. The parts are inclined when inserting, causing one long and one short.
2. The cutting is too long during processing.
2. Remedy for component foot length:
1. Make sure that the parts are upright when inserting, and can be machined to avoid tilting.
2. When processing, it must be ensured that the length of the wire legs reaches the specified length.
3. Pay attention to the length of the upper and lower lines when assembling.
Shenzhen Baiqiancheng Electronics Co., Ltd. has 19 years of PCB processing experience, and has rich experience in quality management in the production process. Before production, we will inspect the plug-in materials. If the pins are long, we will cut the feet first to facilitate the online plug-in and ensure the quality.
