PCB surface finishhttps://devzone.nordicsemi.com/f/nordic-q-a/49466/pcb-surface-finishHello. I would like to know which PCB surface finish would be used for bluetooth application. There are HASL, OSP and ENIG. nRF51822 IC chip and PCB trace antenna will be used. Thanks.en-USTelligent Community 13Mon, 08 Jul 2019 07:50:00 GMTRE: PCB surface finishhttps://devzone.nordicsemi.com/thread/197009?ContentTypeID=1Mon, 08 Jul 2019 07:50:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d8ee236-88b5-481b-b7b7-1df145a7d29dAndreas<p>Hi,</p> <p>&nbsp;</p> <p>Typically any of them can be used, we do not require any specific finish, but you need to make sure with your EMS that they can support the necessary pitch etc.</p> <p>&nbsp;</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>