Diode Array for Full-Wave Rectifier for PoE
A diode array can save you money and board space. 

But I don't think a common cathode array like you selected is especially useful in a full bridge, since only two of the diodes are in common cathode configuration. 

You can look for a series connected one like this:



Or just an isolated array:



You might even find a full bridge array like this one:



Unfortunately the one I found doesn't meet your 40 V reverse requirement.