https://devzone.nordicsemi.com/f/nordic-q-a/19136/relation-of-power-consumption-and-temperature-nrf51822Hello, I am using a RFDigital Simblee module (nRF51822 chip) and an ADC with thermocouples to measure high temperatures and process the temperature data via BLE. So I&#39;m using it like a wireless temperature sensor module. Now the ambient temperatureen-USTelligent Community 13Fri, 20 Jan 2017 14:16:35 GMThttps://devzone.nordicsemi.com/thread/74054?ContentTypeID=1Fri, 20 Jan 2017 14:16:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8febbb68-e1db-42a8-9f4e-86b104af8301awneil<p>Quite a well known rule of thumb is that leakage current in semiconductors doubles with each 10 C increase.</p> <p>There are many other factors, too: <a href="http://www.springer.com/cda/content/document/cda_downloaddocument/9781461407478-c1.pdf?SGWID=0-0-45-1268751-p174130080">www.springer.com/.../9781461407478-c1.pdf</a></p> <p>This is why all semiconductor manufacturers - including Nordic - specify a maximum operating temperature for their devices. If you exceed this (or any other) limit, then the device will not operate within its specifications.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/74055?ContentTypeID=1Fri, 20 Jan 2017 13:48:40 GMT137ad170-7792-4731-bb38-c0d22fbe4515:57eb97a1-b71b-4dc0-af12-f69d9c9c08efSigurd<p>Hi,</p> <p>The max operating temperature of the nRF51822 is 75 °C. (See page 39 in the <a href="http://infocenter.nordicsemi.com/pdf/nRF51822_PS_v3.3.pdf">PS</a>). Exposure to temperatures above the max ratings is not recommend, and various things will be outside specification, such as the current consumption. The radio and other peripherals might not work either if they are exposed to temperatures above the max ratings.</p> <p>I recommend that you switch to the <strong><a href="https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF51824">nRF51824</a></strong>, which is auto grade AEC-Q100 qualified(Grade 2: -40 to 105ºC).</p><div style="clear:both;"></div>