BZX884-B3V3 Zener Diode
Is it feasible to get Vz, Iz data across temperature?
Iz is rather external parameter for the diode.
Vz is equal to Vz(25C) + Sz * (T - 25), where Vz(25C) is Vz at 25C, T is diode's temperature in Celsius.
Note that Sz depends on the Iz, see figure 3 of the data sheet.
Regards,
Bulat