Wiz Heat

Combining the power of the ATmega2560 MCU with onboard Ethernet, a microSD card slot, an efficient switchmode power supply, and a small prototyping area. [Product page]
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JamesBrown
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Joined: Fri Apr 12, 2013 6:27 pm

Wiz Heat

Post by JamesBrown » Fri Apr 12, 2013 6:33 pm

I was having trouble with the serial port on my Ethermega 256 R3 and I noticed that the Wiznet chip (W5100SQFP80) gets too hot to touch. Is this normal? Any way to cool it down?

angusgr
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Re: Wiz Heat

Post by angusgr » Sat Apr 13, 2013 8:48 am

Hi James,

Yes, unfortunately the W5100 is infamous for running unusually hot. It's not a danger to the chip, it can get too hot to touch but should still stay below the standard industrial temperature limit of 85C.

It's such a commonly mentioned characteristic that jonoxer & I were talking the other day about adding a "Chip Runs Hot" warning note on the silk screen of the EtherMega & EtherTen circuit boards. :)

- Angus

JamesBrown
Posts: 7
Joined: Fri Apr 12, 2013 6:27 pm

Re: Wiz Heat

Post by JamesBrown » Sat Apr 13, 2013 1:56 pm

I like it. Would save wondering about it.
Regards...... Jim

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