In PCBA processing, the processed electronic products need to be inspected. Only the products that pass the inspection can be shipped. Next, Shenzhen PCBA processing manufacturer-Shenzhen VIASION Electronics will introduce the inspection requirements of PCBA processed products.
Inspection requirements for PCBA processed products
1. Quality requirements of printing process
① The position of the tin paste is in the middle, without obvious deviation, and can not affect the paste and soldering;
②The printing tin paste is moderate, and it can be pasted well, and there is no less tin and too much tin paste;
③ The tin paste point is well formed, and there should be no continuous tin and uneven shape.
2. Quality requirements for component placement process
① The component placement must be neat, centered, without offset or skew;
② The type and specification of the components at the mounting position should be correct; the components should be free of missing or wrong pasting;
③ SMD components are not allowed to have reverse paste;
④ SMD devices with polarity requirements should be installed according to the correct polarity markings;
⑤ The component placement must be neat, centered, without offset or skew.
3. Component soldering process requirements
① FPC board surface should be free of solder paste, foreign matter and marks that affect the appearance;
② The bonding position of the components should be free of rosin or flux and foreign matter that affect the appearance and soldering tin;
③ The tin spot under the components is well formed, and there is no abnormal wire drawing or sharpening.
4. Appearance process requirements of components
① There should be no cracks or cuts on the bottom of the board, surface, copper foil, circuits, through holes, etc., and no short circuit caused by poor cutting;
② The FPC board is parallel to the plane, and the board has no convex deformation;
③ The FPC board should have no leakage V/V deviation;
④. There is no blur, offset, reverse printing, printing deviation, ghosting, etc. in the silk-screened characters of the marked information;
⑤ There should be no swelling and blistering on the outer surface of the FPC board;
⑥ The aperture size requirements meet the design requirements.