We are using a W5100 with a Pulsejack (J1011F01PNL) RJ45 on a PCB, and have been using this PCB design for many years without issue.
Recently we have added an additional POE++ PCB to the product which is the same as the MAX5996C Eval kit. This POE++ PCB plugs into our original W5100 PCB with a normal network cable.
The W5100 circuit we are using is the same as in the Hardware Design Guide Schematics V2.1
Data sheet links are below.
A few of the W5100 appear to be failing to function and get very hot after a few weeks of operation.
They seem to fail after a power cycle, ie they never fail during usage.
Is this a known issue with the W5100 and POE?
Is the W5100S version more resilient to POE usage?
Any help would be greatly appreciated.
W5100 Hardware Design Guide Schematics V2.1 :