What is the Max die temperature of the nRF52832?

[Ronny Vrijelinck]

In the spec TA is specified with a max of 85°C I assume that this is the Max Ambient temperature and that the die temperature may be higher Is my assumption correct? may the Die get a temperature of 105°C?

[Stefan Birnir Sverrisson]

Hi Ronny

Yes, the operationg temperature specification for nRF52832 is -40 to 85 deg C. The storage temperature specification is -40 to +125 deg C. Yes, this is the ambient temperature specification, but the nRF52832 die temperature is approximately the same as the ambient temperature, as the nRF52832 chip is an ultra low power device and produces very little heat.

For nRF51, I have measured around 2 deg C increase in die temperature when measuring with the internal temperature sensor, when having close to full activity on the chip, so close to maximum heat generation. The nRF52 is more energy efficient than nRF51 and should produce less heat for the same activity level.

Just to mention, if you are interested in device capable of 105 deg C, then nRF51822 can do that, see the nRF51822 Extended Industrial Temperature range document. For nRF52, there is no specification/device available at this point for 105 deg C. The current nRF52832 might still operate at 105 deg C, but most likely its operation will be out of specification.

[victor]

Do you have any plans for high temperature quailification of NRF52?