As most of the northern hemisphere is experincing extreme heat so are the routers. Among my pasively cooled devices an idle rpi3 is at 62°C the coolest. The wired router is at 76°C and my at the the hotest at 82°C.
I guess some of you already have similar experiences.
Were any of these fatal to your devices? If that is the case how hot were and for how long it survived?