#Best solder paste professional

Residual solder paste is available between stencil and PCB Ĭ. Pads or components featuring low solderability ī. Tin powder oxidation or uneven metal particles ī. Too much flux or low activity temperature ĭ.

Cold collapse or slightly thermal collapse Ĭ. The causes can be generally classified into two types: material causes and technology causes.ī. It’s obvious that solder balls are generated due to a lot of causes during SMT assembly process. The process engineers from our warehouse have been constantly studying essential measures to defeat solder balls in SMT assembly process and some handy measures have been summarized based on their deep analysis on the cause of solder balls.

#Best solder paste professional

Up to now, PCBCart has become a professional provider of PCB solutions, including PCB fabrication, components sourcing and SMT assembly after more than 10 years’ efforts and focus. On the other hand, solder balls will possibly fall off, leading SMDs (Surface Mount Devices) to be shorts, substantially reducing the reliability of electronic products, which is especially troublesome for assembled PCBs with high density and fine pins. On one hand, solder balls affect the appearance of electronics products. Sometimes, solder balls can be found around the pins of ICs and connectors.

Generally speaking, solder balls feature a diameter in the range from 0.2mm to 0.4mm and are usually found mainly at the side of chip components. As a common defect usually met in SMT (Surface Mount Technology) assembly process, solder balls, however, are caused due to lots of reasons and are so difficult to control that they have become a main concern in SMT assembly process. Up to now, SMCs depend on reflow soldering as the main manner to get them fixed onto PCBs (Printed Circuit Boards) and the performance of reflow soldering is directly close to that of end products. SMCs (Surface Mount Components) have become increasingly popular in the industry of electronics manufacturing due to their merits of small size, low cost and high reliability.