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What is the thickness of SMT (PCB) steel mesh and how to choose it?

Source: Lin Chuan precision article author: Lin Chuan precision time: July 25, 2020 14:18 reading: 655

The thickness of SMT (PCB) steel mesh is very important for SMT manufacturers. It is not only related to the SMT pass rate, but also directly related to the performance stability and durability of products put into the market in the future. Next, Lin Chuan Jingguan will share the thickness classification and thickness selection skills of SMT (PCB) steel mesh accumulated over the years.

   What are the SMT (PCB) steel mesh and the thickness classification of SMT (PCB) steel mesh:

1. Generally, the steel mesh manufacturers usually have their own steel sheets in stock. The commonly used thicknesses are: 0.1 mm, 0.12 mm, 0.13 mm, 0.15 mm, 0.18 mm, etc.

The front 0.1mm-0.15mm is usually used for the production of solder paste steel mesh, and the rear 0.18mm is commonly used for the production of red glue steel mesh.

2. If manufacturers often produce precision steel mesh, they will prepare some more precise materials, such as 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.08mm, etc., which are mainly used to produce precision steel mesh.

   How to choose the thickness of SMT (PCB) steel mesh

The thickness selection of SMT steel mesh mainly depends on the size of minimum spacing element on PCB. If the distance between components is small, the thickness should be thinner. If the components on the whole PCB board are relatively large, the thickness of thicker points can be used.

The thickness of Ŧ 0.13MM, or Ŧ 0.08mm, is the best. If there are such small spacing elements on the whole plate, the thickness of steel mesh of 0.06mm or 0.05mm can be considered.

2. For BGA or IC , whose center distance is equal to or greater than 0.4mm, the thickness of 0.1mm can be used (the thickness of 0.08mm is also recommended for individual BGA containing BGA). By analogy, the larger the component, the thicker the thickness used.

For BGA or IC with center distance equal to or greater than 0.5mm, the thickness of 0.12mm can be used.

If you don't have the thickness of steel net, you can contact us to choose the thickness of steel net.

Next: How to use SMT steel mesh correctly
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