Curious if a Qorvo SiC JFET block up to the rated voltage in either direction?
No, the Qorvo SiC JFET can block high voltage in one direction, but very limited voltage in the other direction. It is theoretically possible to make a symmetrically blocking JFET, but the on-resistance would at least double, so it is more practical to connect two back-to-back. For more details on this, please refer to the JFET Primer. You may also find the JFET User Guide useful.