Contents
What causes a solder bridge on a PCB?
A solder bridge is formed when two points on the circuit board that should not be electrically connected are inadvertently connected by solder during PCB soldering. This will form an electrical short circuit, which may cause various damages, depending on the circuit structure.
What to do if your solder bridge is too big?
If not detected, it may cause a short circuit and burn out the components. The solder bridge can be secured by fixing a soldering iron in the middle of the bridge to melt the solder and then pulling it out to destroy the bridge. If the solder bridge is too large, the excess solder can be removed with a suction cup. 2. Too much Solder
What happens when solder melts in a circuit?
When the solder melts, the components will usually align on their own, but try to align them as precise as possible in advance anyway. With all the components in place, you are ready for the reflow process. The basic idea is to heat the circuit board to a temperature where the solder melts, then let it cool.
Why is my soldering iron not working properly?
If can not liquefy stubborn solder joints, it may indicate a problem with the design. If not properly corrected, cracks may form over time and eventually cause failure. It is recommended to use an electric soldering iron to remove the cold-soldering solder, and then add solder wire to re-solder.
Can a large ring pad cause a solder bridge?
An annular ring pad that is too large decreases the distance between the solderable surfaces of two adjacent pins. This decreased distance, especially in a wave solder operation, greatly increases the risk of a solder bridge. So follow datasheets to correctly size both the plated through hole and the pad.
Which is an example of a solder bridge?
This creates an electrical short that can wreak all kinds of havoc, depending on what the two points that are shorted together are designed to do. An example of a solder bridge.
Why do I use too much solder on my SMT pads?
Using too much solder on SMT pads because of an incorrect stencil specification. Having a bad seal between a stencil and bare board during the printing process. Designing solder pads that are too big in relation to the gap between pads. Placing components imprecisely or having a reduced component lead to pad size relationship.