There are two basic processes for stencil production: for those with less stringent requirements and the component pin spacing ≥ 0.5mm, etching stencils are generally used, while those ≤0.5mm are used for precision laser stencils.
Features of Stencil in SMT process
1. The steel sheet is made of 304# stainless steel, the hardness is about 400, the carbon content is less than 8%, and the thickness is between 0.1mm~0.5mm, which can be reasonably selected according to customer requirements;
2. Use solvent-resistant AB glue for sealing the net, high-tensile Tedolon mesh, the tension is stable above 40 Newtons, not easy to fall off, and durable for long-term printing;
3. The opening position is accurate, and the hole wall is free of burrs, and different opening shapes can be designed according to different requirements of the product;
4. The regular size of the outer frame is 30*40cm/37*47cm/42*52cm/52*52cm/29*29 inches, etc.; special specifications can be customized on demand. The profiles are high-strength aluminum alloys, and the tensile properties are similar to those of cast iron solid frames, which can be used for a long time without deformation.