PCB Stencil
1. What materials are commonly used for PCB stencil manufacturing? +
The most commonly used materials for PCB stencil manufacturing are 304/316 stainless steel sheets, with thickness ranging from 0.1mm to 0.3mm for standard SMT applications.
2. What is the standard thickness of a PCB stencil for general SMT assembly? +
The standard stencil thickness for general SMT assembly is 0.12mm (4.7mil), suitable for most 0402, 0603, and SOIC package components.
3. What is the minimum aperture size that can be manufactured for a PCB stencil? +
The minimum manufacturable aperture size for a standard stainless steel stencil is 0.2mm x 0.2mm, with a minimum aperture wall thickness of 0.1mm.
4. What is the difference between laser-cut and chemically-etched PCB stencils? +
Laser-cut stencils offer higher precision, smoother aperture walls, and better dimensional stability for fine-pitch components; chemically-etched stencils are more cost-effective for standard designs with larger apertures.
5. What is the typical tolerance for PCB stencil aperture dimensions? +
The typical dimensional tolerance for laser-cut stencil apertures is ±0.01mm, and ±0.02mm for chemically-etched stencils.
6. Can PCB stencils be reused for multiple production runs? +
Yes, high-quality stainless steel stencils can be reused for thousands of production runs, provided they are properly cleaned and maintained to prevent solder paste buildup and aperture damage.
7. What is the maximum size of PCB stencil you can manufacture? +
We can manufacture PCB stencils with a maximum size of 1200mm x 600mm, suitable for large-format PCB panel assembly.
8. Can you provide step stencils for mixed-package PCB designs? +
Yes, we can manufacture step stencils with varying thicknesses in different areas of the stencil, ideal for mixed-package designs with both fine-pitch ICs and large through-hole components.
9. What is the typical lead time for PCB stencil manufacturing? +
The standard lead time for PCB stencil manufacturing is 1-2 business days for standard designs, and 2-3 business days for complex step stencils or large-format designs.
10. Do you provide stencil verification and inspection reports? +
Yes, we provide a full dimensional inspection report for every stencil, including aperture size verification, position accuracy, and wall smoothness measurements, to ensure compatibility with your PCB design.
