https://devzone.nordicsemi.com/f/nordic-q-a/81890/nrf9160-dk-pcb-stack-upPlease ask a question about &quot;PCB specification&quot; in &quot;nRF9160HardwareIntegrationGuidev12.pdf&quot;. The board thickness is 1.6 mm. Adding the thickness of the listed copper and FR-4, it becomes 1.506mm (18um + 100um + 35um + 1200um + 35um + 100um + 18um = 1506umen-USTelligent Community 13Fri, 19 Nov 2021 15:28:18 GMThttps://devzone.nordicsemi.com/thread/339870?ContentTypeID=1Fri, 19 Nov 2021 15:28:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8288644f-e2c3-484f-92c8-f29a75c0993cMartin Sivertsen<p>Hello,</p> <p>1.6 mm in this case is the nominal thickness of the board specified by the PCB manufacturer, this is usually given with an error of +/- 10%.</p> <p>In addition to the dimensions given, there is also 20um plating on both outer layers of copper as well as solder mask and silkscreen which add some um to the total thickness.</p> <p>Best regards,</p> <p>Martin S.</p><div style="clear:both;"></div>