[DonRotolo]

Also note Figure 2 - if there is a thermal resistance of 15C/w then at 50C you can handle around 10 amps only. In other words, don't just read the shecs, look at (and understand) the graphs.

You might be better off finding discrete diodes in a larger package. One idea would be to find diodes from an old car alternator, they are usually rated quite high. Also, diodes can be put in parallel to increase their current capacity (to a point)

Don