Overview | ACCUFRAME® | Laser Cut| Quality | Technology | Quote
Advantages of Laser Cut
1. Smooth internal pad walls(<= 3µm)
2. Aperture consistency reduces dpm’s
3. High Pad positional accuracy.
4. Stencil to PCB registration (caused by film distortion)
5. No chemicals – Environmentally friendly process.
6. Drastic reduction in print rejects
7. Clean and exact printing image of the solder paste
8. Fine-pitch screen <= 250µM can be realised without problems>
See for yourself:
The images shown below were produced by a University Institute using a scanning electron microscope.
Stencil produced by etching technology
pad screen 300µm
Stencil produced by laser technology
pad screen 250µm, pad aperture 120µm
This comparison test of a well-known German electronics company produced the following results:
| Etched stencil: | laser-cut stencil: |
| 6300 dpm ends | 150 dpm ends |
5230 dpm
soldered connections | 55 dpm
soldered connections |
Straight vertical walls, wall smoothness, and
dimensional precision define SMT stencil performance.
Typical PNC Stencil walls are
shown below:
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| Uniform apertures with
smooth walls render consistent paste volume. |
Laser cut precision with
software driven repeatability affords exceptional
dimensional accuracy. |
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