user10442: I'm making a thermometer and, so I can graph the data, I have an Uno with the WizNet shield sending the data to a LAN ip. The chip itself is oddly hot, its temperature measures at around 110-120ºF (43.33-48.89ºC). I want the program to be running almost 24/7. Is it okay for the chip to be this hot?

user11086: According to the WizNet forums this is normal for these shields. Their justification being that it is a PHY and controller on a single chip. (Note this post only specifically mentions the W5100, which is among the more commonly used chips on these kinds of shields, however, I suspect that this is typical for most of the WizNet line, e.g. W5200 etc.)

10442: <p>I'm making a thermometer and, so I can graph the data, I have an Uno with the WizNet shield sending the data to a LAN ip. The chip itself is oddly hot, its temperature measures at around <strong>110-120ºF</strong> (43.33-48.89ºC). I want the program to be running almost 24/7. Is it okay for the chip to be this hot?</p>
 11086: <p>According to the <a href="http://wizwiki.net/forum/viewtopic.php?f=20&amp;t=2108&amp;p=6933&amp;hilit=w5100%20temperature#p6933" rel="nofollow">WizNet forums</a> this is normal for these shields. Their justification being that it is a PHY and controller on a single chip. (Note this post only specifically mentions the W5100, which is among the more commonly used chips on these kinds of shields, however, I suspect that this is typical for most of the WizNet line, e.g. W5200 etc.)</p>
