What is Solder mask bridge?
Views : 2554
Author : meidear
Update time : 2020-07-16 12:02:53
Solder Mask Bridge:
The oil between two pins of component is solder mask bridge, generally refers to intensive IC pin (check the below picture). If the distance of pin is too small, it will be recommended to cancel the solder mask bridge and take advantage of solder mask opening technology.
The solder resist between the SMD pads is called solder mask bridge (solder mask dam), which serves to prevent bridging and short circuit when welding. Sometimes the solder mask bridge breaking off happens in many printed circuit board companies, greatly affecting the product quality and production efficiency. With the rapid development of PCB industry, the requirements of customers are getting higher and higher.
The oil between two pins of component is solder mask bridge, generally refers to intensive IC pin (check the below picture). If the distance of pin is too small, it will be recommended to cancel the solder mask bridge and take advantage of solder mask opening technology.
The solder resist between the SMD pads is called solder mask bridge (solder mask dam), which serves to prevent bridging and short circuit when welding. Sometimes the solder mask bridge breaking off happens in many printed circuit board companies, greatly affecting the product quality and production efficiency. With the rapid development of PCB industry, the requirements of customers are getting higher and higher.
The main reason of solder mask bridge breaking off is that the intensity of UV decreases rapidly with transmission depth of solder mask ink, and when the ink is more than a certain thickness, it will not be fully photo-polymerized, so undercut and solder mask bridge breaking off happen when developing. Meantime, the exposure energy, developing time, precure time and so on will have an influence on breaking off solder mask bridge.
Solder Mask Openings:
Meidear PCB can accept the min distance between IC pins is 0.2mm (check the below picture), if the distance less than 0.2mm, we recommend to do solder mask openings.
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