The most thermally stable soft grade, with the highest coercive field and Curie point of the Type II set.

| Navy type | Type II |
|---|---|
| Density | 7.90 g/cm³ |
| Curie temperature (Tc) | 380 °C |
| Dielectric constant (Kᵀ₃₃) | 1450 |
| Dielectric loss | 0.013 |
| Coercive field (Ec) | 25 kV/cm |
| Piezoelectric coefficient (d33) | 300 pm/V |
| Transverse coefficient (d31) | -121 pm/V |
| Shear coefficient (d15) | 350 pm/V |
| Electromechanical coupling (k33) | 0.51 |
| Thickness coupling (kt) | 0.45 |
| Planar coupling (kp) | 0.54 |
| Shear coupling (k15) | 0.60 |
| Planar frequency constant (Np) | 2215 Hz·m |
| Thickness frequency constant (Nt) | 2071 Hz·m |
Every High-Sensitivity Soft PZT grade on its piezoelectric coefficient.
Shapes, poling modes, markets and documents for TRS 203.
