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 Shenzhen KingshengPCBA Tech Co.,Ltd (HK C-Alley Co.,Ltd), an professional PCBA manufactuer and electronics manufacturing service (EMS) provider for 12years.SMT factory has ISO9001, ISO14001, TS16949 certification, advanced production equipment and rich experience in the production of PCBA. more

How to avoid the case where the pad does not match the component pin size
How to avoid the case where the pad does not match the component pin size
 
(1) In principle, the design of the surface mount pad must be done in two ways: the pin center is matched with the pad center, and the pad should be 0.05 mm or more larger than the pin periphery.
 
(2) For the arc-shaped surface end welding surface, the pad must be in contact with the welding end due to the influence of the arc.
 
(3) For similar package exclusion, in addition to the above requirements, the design of the external expansion pad can also be used. This method is mainly to use the surface tension of the tetragonal solder paste after melting to position, pull the component to the center position, so that the intermediate pad can be accurately aligned and soldered well.