There are two silicon carbide families. The first generation is called G1 and the second generation is called G2. The G1 family basically has lower forward conduction losses or Vf. The G2 has VF that is a little higher, but it has a better surge current rating which is related to surge robustness. There are some applications, especially offline applications, like a server power supply or a desktop power supply where users care specifically about surge robustness. There is overall better efficiency linked to VF, but that does not matter for all applications. There is going to be some power factor correction circuits where the VF does not make as big of a deal as does the switching performance. The G2 family is going to be used more in offline applications like power factor correction circuits optimized for telecom or for server power supplies. G1 will be used more where there is DC inputs like solar where the input is from a PV panel, or in a uninterruptible power supplies (UPS) where the input is a battery. The bottom line is STMicro has two kinds of silicon-carbide diodes for different needs.