SPICE Model Parameter of MOSFET

from :http://www.seas.upenn.edu/~jan/spice/spice.MOSparamlist.html



LEVEL         Model type (1, 2, or 3)                            1                          
L             Channel length                    meters           DEFL                       
W             Channel width                     meters           DEFW                       
LD            Lateral diffusion length          meters           0                          
WD            Lateral diffusion width           meters           0                          
VTO           Zero-bias threshold voltage       Volts            0                          
KP            Transconductance                  Amps/Volts2      2E-5                       
GAMMA         Bulk threshold parameter          Volts1/2         0                          
PHI           Surface potential                 Volts            0.6                        
LAMBDA        Channel-length modulation         Volts-1          0                          
             (LEVEL = 1or 2)                                                               
RD            Drain ohmic resistance            Ohms             0                          
RS            Source ohmic resistance           Ohms             0                          
RG            Gate ohmic resistance             Ohms             0                          
RB            Bulk ohmic resistance             Ohms             0                          
RDS           Drain-source shunt resistance     Ohms             [[infinity]]               
RSH           Drain-source diffusion sheet      Ohms/square      0                          
             resistance                                                                    
IS            Bulk p-n saturation current       Amps             1E-14                      
JS            Bulk p-n saturation/current area  Amps/meters2     0                          
PB            Bulk p-n potential                Volts            0.8                        
CBD           Bulk-drain zero-bias p-n          Farads           0                          
             capacitance                                                                   
CBS           Bulk-source zero-bias p-n         Farads           0                          
             capacitance                                                                   
CJ            Bulk p-n zero-bias bottom         Farads/meters2   0                          
             capacitance/length                                                            
CJSW          Bulk p-n zero-bias perimeter      Farads/meters    0                          
             capacitance/length                                                            
MJ            Bulk p-n bottom grading                            0.5                        
             coefficient                                                                   
MJSW          Bulk p-n sidewall grading                          0.33                       
             coefficient                                                                   
FC            Bulk p-n forward-bias                              0.5                        
             capacitance coefficient                                                       
CGSO          Gate-source overlap               Farads/meters    0                          
             capacitance/channel width                                                     
CGDO          Gate-drain overlap                Farads/meters    0                          
             capacitance/channel width                                                     
CGBO          Gate-bulk overlap                 Farads/meters    0                          
             capacitance/channel width                                                     
NSUB          Substate doping density           1/centimeter3    0                          
NSS           Surface-state density             1/centimeter2    0                          
NFS           Fast surface-state density        1/centimeter2    0                          
TOX           Oxide thickness                   meters           [[infinity]]               
TPG           Gate material type: + 1 =                          + 1                        
             opposite of substrate, - 1 =                                                  
             same as substrate,   0 =                                                      
             aluminum                                                                      
XJ            Metallurgical junction depth      meters           0                          
                  
UCRIT         Mobility degradation critical     Volts/centimete  1E4                        
             field (LEVEL = 2)                 r                                           
UEXP          Mobility degradation exponent                      0                          
             (LEVEL = 2)                                                                   
UTRA          (Not Used) mobility degradation                                               
             transverse field coefficient                                                  
VMAX          Maximum drift velocity            meters/seconds   0                          
NEFF          Channel charge coefficient                         1                          
             (LEVEL = 2)                                                                   
XQC           Fraction of channel charge                         1                          
             attributed to drain                                                           
DELTA         Width effect on threshold                          0                          
THETA         Mobility modulation (LEVEL = 3)   Volts-1          0                          
ETA           Static feedback (LEVEL = 3)                        0                          
KAPPA         Saturation field factor                            0.2                        
             (LEVEL=3)                                                                     
KF            Flicker noise coefficient                          0                          
AF            Flicker noise exponent                             1