/nordic/nordic-blog/b/blog/posts/nrf51822-now-available-as-ultra-thin-csp-variantThe award winning nRF51822 is now available as an ultra-thin Chip Scale Package) CSP variant. Measuring just 3.38mm x 3.38mm and with a height profile (including ball grid array) of just 0.35mm it is tiny, tiny enough to fulfill the requirements of ten-USTelligent Community 13https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/nrf51822-now-available-as-ultra-thin-csp-variantFri, 15 Apr 2016 09:50:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7c6461b-e4e2-4b4b-8a2a-730311e32536Stefan Birnir Sverrisson0<p>The dimensions for different nRF51822 variants are presented in the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf51/dita/nrf51/pdflinks/51822_ps.html?cp=2_3_0">nRF51822 PS 3.2 document</a>, chapter 9 about &quot;Mechanical Specification&quot;. Thinnest QFN is maximum 0.9mm and thinnest &quot;original&quot; WLCSP is maximum 0.55mm. The ultra-thin CTAC variant is maximum 0.41mm, typically 0.35mm.</p> <img src="https://devzone.nordicsemi.com/aggbug?PostID=915&AppID=4&AppType=Weblog&ContentType=0" width="1" height="1">https://devzone.nordicsemi.com/nordic/nordic-blog/b/blog/posts/nrf51822-now-available-as-ultra-thin-csp-variantFri, 15 Apr 2016 08:04:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d7c6461b-e4e2-4b4b-8a2a-730311e32536BodyBeacon0<p>What is the height of the smallest &quot;original&quot; WLCSP and QFN variants of the nRF51822?</p> <img src="https://devzone.nordicsemi.com/aggbug?PostID=915&AppID=4&AppType=Weblog&ContentType=0" width="1" height="1">