| Xj | Junction depth |
| Vsat | Saturation velocity |
| U0 | Mobility |
| Nch | Doping concentration near channel interface |
| Vth0 | Threshold voltage |
| A0 | Bulk charge coefficient |
| A2 | Second non-saturation factor |
| Cpd | Parasitic capacitance at drain contact |
| Cps | Parasitic capacitance at source contact |
| Rsol | Resistance of electrolyte |
| tox | Oxide thickness |
| Cox | Oxide capacitance |
| Aox | Gate-oxide interface area |
| εox | Permittivity of oxide |
| gm | Transconductance parameter |
| Cfb | Feedback capacitance |
| Rfb | Feedback resistance |
| Cbio | Capacitance due to biomolecules |
| Rbio | Resistance due to biomolecules |
| tbio | Thickness of biomolecular layer |
| κbio | Relative permittivity of biomolecules |
| εbio | Permittivity of biomolecules |
| γ | Capacitance per unit area of biomolecules |
| λ | Resistance per unit area of biomolecules |
| A | Area of contact with source or drain |
| d | Thickness of passivation layer |