The demand for Prototypehas always occupied an important position in the electronic assembly industry, such as the testing of new products, the quality testing of new cooperative SMT plants, etc.
The SMT factory itself attaches great importance to the product quality inspection of Prototypeand large-scale . The yield rate of the product is the best display of the factory.
Linke Electronics, a professional SMT PCBA factory, briefly introduces some common product inspection points.
Solder paste printing requirements
1. The position of solder paste printing is moderate, which can be well pasted, and there is no phenomenon such as less tin and too much tin paste.
2. The solder paste points are well formed, and there can be no continuous tin, unevenness, etc.
Component placement requirements
1. The model and specification of the components at the mounting position should be correct; the components should be free of missing or wrongly pasted.
2. SMT components cannot be reversed.
3. SMD devices with polarity requirements should be installed according to the correct polarity marking.
4. Component placement should be neat and centered, without offset and skew.
Component soldering requirements
1. There should be no solder paste and marks that affect the appearance on thefor Assembly.
2. The bonding position of components should be free of rosin or flux that affects the appearance and soldering.
3. The tin points under the components are well formed, and there is no abnormal wire drawing or sharpening.
The appearance requirements of the
1. There should be no cracks or cuts on the bottom of the, the surface of the , copper foil, lines, through holes, etc., and no short circuit caused by poor cutting.
3. The screen-printed text of the marked information characters has no blur, offset, reverse printing, offset printing, ghosting, etc.
4. There should be no swelling and foaming on the outer surface of the circuit board.
5. The aperture size requirements meet the design requirements.
Shijiazhuang Linke Electronics Tech Co.,Ltd, specializes in, providing electronic OEM processing, DIP plug-in processing, PCBA contracting, manufacturing and other services, with advanced production equipment and perfect after-sales service system.