https://devzone.nordicsemi.com/f/nordic-q-a/71770/nrf52811---anomalies-and-build-codes-questionHi, We have the nRF52811 in QFN48 fitted to a number of products, with the chip showing &#39;QAAA0 1850AA&#39;. Does this mean that it&#39;s an early Revision 1 ? The Errata in the product specification states &quot; This Errata document contains anomalies for the nRF52811en-USTelligent Community 13Fri, 19 Feb 2021 12:28:11 GMThttps://devzone.nordicsemi.com/thread/295330?ContentTypeID=1Fri, 19 Feb 2021 12:28:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b31dbb44-54d3-44dd-bf00-2fe5c6333f59Pete W<p>Thanks&nbsp;<span>J&oslash;rgen.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/295061?ContentTypeID=1Thu, 18 Feb 2021 11:32:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:261a7afb-484a-4a55-bbca-79f29a342bd0J&#248;rgen Holmefjord<p>Hi,</p> <p>The last 0 is part of the build code and means that the chip is delivered without any firmware, see &lt;F&gt; in&nbsp;<a title="Code ranges and values" href="https://infocenter.nordicsemi.com/topic/ps_nrf52811/ordering_info.html?cp=4_4_0_9_3#code_range">Code ranges and values</a>. This parameter is&nbsp;not part of the <a title="IC marking" href="https://infocenter.nordicsemi.com/topic/ps_nrf52811/ordering_info.html?cp=4_4_0_9_0#ic_marking">IC marking</a>. See fotnote 2 in the nRF52811&nbsp;<a title="SoC revisions and variants" href="https://infocenter.nordicsemi.com/topic/comp_matrix_nrf52811/COMP/nrf52811/nrf52811_ic_revision_overview.html?cp=4_4_3_0">SoC revisions and variants</a>&nbsp;compatibility matrix regarding the x.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>