- What measures minimise the risk of desoldering SMD components?
If this is the case, the heat input for the solder joints of the SMD components positioned in the neighbourhood of the THT component is generally too high. In this case, these SMD components must be protected from excessive heat by means of a mask if it is not possible to adapt the layout of the assembly. This can be a challenge, especially with high packing densities and increasing miniaturisation.
- What do you need to consider when using a solder mask?
In principle, however, the following applies to the use of Solder masks that certain requirements must be taken into account when designing the module:
Surround your THT soldering point with a clearance of at least 1.5 mm and position components that are not too high in the immediate vicinity. This allows you to achieve a comfortable process window and maximum reproducibility with the optimum solder mask. If you still have unchangeable and smaller clearances, please contact us, as we also have special solutions for one or two problems in our wealth of experience.
- What types of solder mask are there?
There are many different types of solder masks for use in selective soldering. These can be manufactured with different geometries and from a wide variety of materials so that they can also be used for large wave soldering. There are also specific solder masks that only fulfil their function in selective soldering in conjunction with the right material and the right solder nozzle. In addition, solder masks can also be used for Laser and Induction soldering and Piston soldering masks can be used. In this case, they also protect the assembly and surroundings from reflections as well as solder and flux splashes.
For further information and your customised solder mask, please contact us at any time.
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