Common PCB soldering defects and their causes
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PCB soldering defects?are a common issue in?PCB assembly. In this article, we will discuss the most common soldering defects and their causes.
Solder Bridges: When excess solder forms a connection between two adjacent conductive points, causing a short circuit.
Solder Splatter: Tiny solder droplets or splashes that may occur during the soldering process, leading to potential shorts or reduced reliability.
Cold Solder Joints: Occurs when the soldering temperature is too low or the soldering time is insufficient, leading to a weak or incomplete bond between the components and the PCB pads.
Tombstones: One end of a surface-mount component lifts off the PCB pad during reflow, resembling a tombstone.
Lifted Pads: The solder joint or the copper pad is detached from the PCB surface, resulting in a non-functional connection.
Component Misalignment: Components are not placed correctly on the PCB pads, leading to poor electrical connections or shorts.
Solder Voids: Air pockets or gaps within the solder joint, reducing the strength and reliability of the connection.
Solder Balling: Formation of small balls of solder on the PCB surface, causing shorts or poor connections.
Too Much Solder：These joints are easily identifiable on a circuit board as they appear round and bulging, resembling a bubble. Excess solder coverage can result in inadequate electrical conductivity, rendering the joint incapable of fulfilling its intended function. Although it may not be prone to stress fractures, it will not serve its purpose.
When it comes to?PCB soldering defects, prevention is the best cure. By using the different technologies and methods available, you can catch potential defects before they cause issues, and they will save you time and money in the long run. So, don’t wait until there’s a problem; be proactive and prevent soldering defects before they happen.
If you have any questions about soldering defects or how to prevent them, reach out to the experts at Highleap.We are more than happy to help with all of your?PCB assembly projects.