Gang Mask - SOP Most Density Solder Mask

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   When I create a SOP package at Most density the solder mask is larger than I what my setting is. 
My solder mask X & Y is +- 0.05
padstack created is r135_48m145_65
should be r135_48m145_58.

Please help understand what is going on.

Jeff

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jmeinert Members Profile Send Private Message Find Members Posts Add to Buddy List Advanced User Joined: 27 Jun 2016 Status: Offline Points: 66	Post Options Post Reply Quote jmeinert Report Post Thanks(0) Quote Reply Topic: Gang Mask - SOP Most Density Solder Mask Posted: 20 Jul 2017 at 11:39am
	When I create a SOP package at Most density the solder mask is larger than I what my setting is. My solder mask X & Y is +- 0.05 padstack created is r135_48m145_65 should be r135_48m145_58. Please help understand what is going on. Jeff



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5717	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 20 Jul 2017 at 11:44am
	Can you send me the FPX file so I can review? I need to check if the program is expanding the mask to Gang it. If the Nominal Density Level it may not Gang the mask because it does not violate the Minimum Solder Mask Web rule. But Most Density the Pad Size is larger and the solder mask might swell to Gang it together.
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