https://devzone.nordicsemi.com/f/nordic-q-a/25076/difference-between-nrf51822-batch-2015-week33-and-batch-2016-week-27Hi everybody, We have used both nrf51822 from batch 2015 week 33 and 2016 week 27 and found big discrepencies on BLE connections (stability issues) Is there major differences between these batches ? Thanks in advance Regards, Cédricen-USTelligent Community 13Wed, 13 Sep 2017 13:09:18 GMThttps://devzone.nordicsemi.com/thread/98792?ContentTypeID=1Wed, 13 Sep 2017 13:09:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d9bad783-cd9b-44f7-9836-85c6a8b76b31cedric<p>Hi Martin, here are the serial number: N51822QFAAH01533KA for the batch &quot;in defect&quot; N51822QFAAH01627WO for the &quot;good&quot; one Thanks Regards,</p> <p>Cédric</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/98793?ContentTypeID=1Tue, 12 Sep 2017 09:21:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2cb6b11-98fc-4d21-a186-844302c47d85MartinBL<p>What are the complete serial numbers on the chips?</p><div style="clear:both;"></div>