https://devzone.nordicsemi.com/f/nordic-q-a/83330/identify-exact-model-from-chip-label-n51822qfaah01621utI have a module using a Nordic chip labelled &quot;N51822QFAAH01621UT&quot;. I know it&#39;s the NRF51822-QFAA, but I am not sure which model exactly? Looking on DigiKey these are the 3 models: NRF51822-QFAA-T NRF51822-QFAA-R7 NRF51822-QFAA-R I&#39;m not sureen-USTelligent Community 13Tue, 04 Jan 2022 16:17:32 GMThttps://devzone.nordicsemi.com/thread/345965?ContentTypeID=1Tue, 04 Jan 2022 16:17:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c8756953-3571-4afb-b266-ead089e83633J&#248;rgen Holmefjord<p>Hi,</p> <p>This information is described in <a href="https://infocenter.nordicsemi.com/pdf/nRF51822_PS_v3.4.pdf#page=73">chapter 10 of the nRF51822 Product Specifications v3.4</a>.</p> <p>The last part of the order code you see at DigiKey is the&nbsp;Container code, which is not part of the chip markings.</p> <p>You chip markings indicates a <a href="https://infocenter.nordicsemi.com/topic/comp_matrix_nrf51/COMP/nrf51/nRF51822_ic_revision_overview.html">nRF51822 QFAA H0 chip</a>, produced in week 16-2021, with Wafer Lot code UT.</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>