https://devzone.nordicsemi.com/f/nordic-q-a/117763/nrf5340-low-power-hardware-designHi, We found a very strange problem when designing a product using nrf5340: The equipment is coated with a layer of UV tri-proof paint on the chip of nRF5340 and the peripheral equipment. At the beginning, the current of the normal temperature testen-USTelligent Community 13Mon, 06 Jan 2025 15:21:54 GMThttps://devzone.nordicsemi.com/thread/517060?ContentTypeID=1Mon, 06 Jan 2025 15:21:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:54eeec21-4c22-4b76-a288-44cdf4976eccZion<p>We have seen this phenomenon on all the devices that plays uv three anti-paint.Will do.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/517058?ContentTypeID=1Mon, 06 Jan 2025 15:17:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:67ac9f4a-1e4c-433a-b317-b8a0a8ed3fc9ketiljo<p>Do you see this on more than one device? Maybe contact the manufacturer of the coating material to get advice?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/517054?ContentTypeID=1Mon, 06 Jan 2025 15:13:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9321b443-8cef-499e-b856-a43cabe2ecd3Zion<p>Is there anything we can do to prevent this from happening? Our boards need to operate in a working environment of -40℃ to 60℃.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/517052?ContentTypeID=1Mon, 06 Jan 2025 15:10:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1da59646-ec2d-4c49-82e5-0a2010ee5226Zion<p>Yes,the coating completely covering the nrf5340 chip,however,&nbsp;the board&nbsp;can return to normal temperature after a period of time.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/517041?ContentTypeID=1Mon, 06 Jan 2025 14:54:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a79d9aa-10a9-4f47-a700-e0bc331ed0b2ketiljo<p>Sounds like moisture has gotten under the coating and caused corrosion or short circuit? Is the coating completely covering the board?</p><div style="clear:both;"></div>