nAN-40: aQFN center pad paste stencil recommendationshttps://devzone.nordicsemi.com/f/nordic-q-a/33258/nan-40-aqfn-center-pad-paste-stencil-recommendationsThe aQFN app note suggests a fully open paste stencil (opening size = pad size) for the center pad of the aQFN. Our assembly house is suggesting a windowed paste stencil. Like shown below: The rationale is to reduce voiding by providing an escapeen-USTelligent Community 13Wed, 11 Apr 2018 15:16:02 GMTRE: nAN-40: aQFN center pad paste stencil recommendationshttps://devzone.nordicsemi.com/thread/127877?ContentTypeID=1Wed, 11 Apr 2018 15:16:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0be30170-f960-44a7-91d0-a6f6b98cf606bpiquette<p>Thanks for your feedback.</p><div style="clear:both;"></div>RE: nAN-40: aQFN center pad paste stencil recommendationshttps://devzone.nordicsemi.com/thread/127758?ContentTypeID=1Wed, 11 Apr 2018 08:33:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1ff92231-e934-4fbc-853d-ecf6a5385048Andreas<p>Hi,</p> <p>&nbsp;</p> <p>If your assembly house recommends this then you should go with that. Regardless, we&#39;ve seen multiple various solder paste solutions, both fully open and multiple windows, and have not had reports of any problems on any.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>