The problem: It is the heat that is not caused by the voltage drop of 0.7V going. In the 10A respectively 7Watt are power dissipation. If you switch 4 diodes as a bridge has one 14 Watt. I have therefore set up an experiment in which I have connected 4 diodes as a bridge, with approximately 5A flowed. after about 25 seconds, the diodes have become so hot that they have desoldered of itself.