Can two 15A fast recovery diodes be replaced with a 30A in parallel?

Can two 15A fast recovery diodes be replaced with a 30A in parallel?

fast recovery diodes Two 15A fast recovery diodes of the same model in parallel can be used as 30A; Even though different models have the same withstand voltage, due to the different forward voltage drops, although they are made into 30A in parallel, diodes with low voltage drops can pass much more current, so they cannot be simply used in parallel. For example, if a 10A diode with a low voltage drop is connected in parallel with a 20A diode with a high voltage drop, the 10A diode will have more current flow, greater burden, and easier heating than the 20A diode. In addition, even if two 15A diodes of the same model and different batches are connected in parallel, there is still a difference in forward voltage drop, which is not as good as a 30A diode. However, the problem is no longer significant.

Our suggestion is to use two 15 fast recovery diodes of the same model in parallel with one 30A in case of emergency, provided that other parameters are met. The 30A fast recovery diodes is not difficult to find, so try to use 30A in the design.