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Solder Mask concern

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martin 6 years ago

Hello! I have a couple of fine-pitch smd ICs over which I have a concern with the output of the solder mask performed by EasyEDA. See images: In EasyEDA: ![Viewed in EasyEDA layout editor][1] [1]: /editor/20180208/5a7b3135dcae4.png Gerber-viewer solder mask layer: ![no mask between pads?][2] [2]: /editor/20180208/5a7b31872dcd4.png Just looking for some reassurance here. The pitch for this IC isn't out of the ordinary (DFN-MF10), about 0.2mm between pads. Thanks for any pointers.

Comments

andyfierman 6 years ago

Does it look like that if you check using `gerbv`? http://gerbv.geda-project.org

martin 6 years ago

Hmmm, gerbv install not so straightforward on OSX. But, yeah, same result: ![enter image description here][1] [1]: /editor/20180209/5a7cb37bdcfca.png

martin 6 years ago

Andy, has something changed as far as solder mask tolerances? I am pretty sure this footprint was better than that on my last order: ![enter image description here][1] [1]: /editor/20180209/5a7cbcc419fff.png Result:

martin 6 years ago

![enter image description here][1] [1]: /editor/20180209/5a7cbcf90bda3.png

martin 6 years ago

OK, as far as I can tell, the solder mask layer expands 4 mils around pads. Maybe that's actually OK and I noticed for the first time just recently.

andyfierman 6 years ago

Hi Martin, Sorry but I don't know if the soldermask spacing has changed. Maybe ask Support directly?

Tutorials 6 years ago

Hi @andyfierman @martin We didn't change the solder mask spacing. thanks

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