Difference between revisions of "User:Asj/Notes about laser cutting solder stencils"
< User:Asj
Jump to navigation
Jump to search
(Created page with "Most pads are ok - perhaps a bit large. Small pitch QFN packages are a problem. To do these, * For each QFN pad, downsize "solder paste absolute clearance" to -0.09 and prod...") |
|||
| Line 7: | Line 7: | ||
** 100mm/s at 30% | ** 100mm/s at 30% | ||
** Line interval of 0.02mm | ** Line interval of 0.02mm | ||
| + | |||
| + | It might also be a good idea to apply this globally since other pads also end up a bit large. This can be done: | ||
| + | |||
| + | * File -> Board Setup -> Solder Mask Paste | ||
| + | * "Solder paste absolute clearance" -> -0.09mm | ||
Revision as of 18:20, 19 May 2024
Most pads are ok - perhaps a bit large.
Small pitch QFN packages are a problem. To do these,
- For each QFN pad, downsize "solder paste absolute clearance" to -0.09 and produce solder mask svg
- Configure Light burn to engrave at
- 100mm/s at 30%
- Line interval of 0.02mm
It might also be a good idea to apply this globally since other pads also end up a bit large. This can be done:
- File -> Board Setup -> Solder Mask Paste
- "Solder paste absolute clearance" -> -0.09mm