Mextram_Model:Mextram Bipolar Transistor Model
The SPICE Q model is translated to the ADS NPN or PNP BJT_Model. For translation information on the BJT device, refer to BJT Device.
For more information on the ADS model, place the model in a schematic and choose Edit > Component > Edit Component Parameters to view the model parameters. You can also click Help in the component editor dialog box for additional information.
Example SPICE Command Line:
.model mex504 npn level=vers=504 tref=25.0 is=22.0e-18 ...
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SPICE Dialect and Netlist Syntax:
Spice2/3:
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Does not exist.
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PSpice:
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Does not exist.
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HSpice:
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.model mname NPN | PNP LEVEL=6 VERS=504[param=value]*
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ADS Netlist Syntax:
model mname MextramBJT NPN=[0|1] PNP=[0|1] Release=504 [param=value]*
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ADS Schematic Symbol: 
Model Parameters:
For information on parameter format, refer to Using Parameter Mapping Tables to Understand a Translation.
Table 8-7. Mextram_Model Parameters
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LEVEL
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6
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x
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x
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6
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MULT
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1.0
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x
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x
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Tref
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C
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25.0
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x
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x
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25
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DTA
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0.0
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x
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x
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EXMOD
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1
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x
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x
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1
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EXAVL
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0
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x
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x
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0
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Is
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A
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22.0e-18
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x
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x
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2.20E-17
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Ik
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A
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0.1
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x
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x
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0.1
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Ver
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V
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2.5
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x
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x
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2.5
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Vef
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V
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44.0
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x
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x
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44
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Bf
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215.0
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x
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x
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215
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Ibf
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A
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2.75e-15
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x
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x
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2.70E-15
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Mlf
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2.0
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x
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x
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2
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Xibi
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0.0
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x
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x
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0
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Bri
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7.0
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x
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x
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7.8
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Ibr
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A
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1.0e-15
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x
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x
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1.00E-15
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Vlr
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V
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0.2
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x
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x
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0.2
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Xert
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0.63
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x
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x
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0.63
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Wavl
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gMeters
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1.1e-6
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x
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x
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1.00E-06
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Vavl
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V
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3.0
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x
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x
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3
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Sfh
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0.3
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x
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x
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0.3
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Re
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ohms
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5.0
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x
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x
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5
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Rbc
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ohms
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23
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x
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x
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23
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Rbv
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ohms
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18
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x
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x
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18
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Rcc
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ohms
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12
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x
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x
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12
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Rcv
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ohms
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150
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x
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x
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150
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SCRcv
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ohms
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1250
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x
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x
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1250
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Ihc
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A
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4e-3
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x
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x
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4.00E-03
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axi
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0.3
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x
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x
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0.3
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Cje
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farads
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73e-15
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x
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x
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73E-15
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Vde
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V
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0.95
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x
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x
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0.95
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pe
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0.4
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x
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x
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0.4
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XCje
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0.4
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x
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x
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0.4
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Cbe0
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0.0
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x
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x
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0.0
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Cjc
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F
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78e-15
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x
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x
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7.80E-14
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Vdc
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V
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0.68
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x
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x
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0.68
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pc
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0.5
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x
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x
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0.5
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Xp
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0.35
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x
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x
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0.35
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mc
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0.5
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x
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x
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10.5
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XCjc
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32e-3
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x
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x
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32E-3
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Cbc0
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0
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x
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x
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mt
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1
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x
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x
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1
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te
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s
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2e-12
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x
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x
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2E-12
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tb
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s
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4.2e-12
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x
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x
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4.2E-12
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tepi
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s
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41e-12
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x
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x
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4.10E-11
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tr
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s
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520e-12
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x
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x
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5.20E12
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dEg
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Elec. V
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0
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x
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x
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0
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Xrec
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V
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0
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x
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x
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0
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Aqb0
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0.3
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x
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x
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0.3
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Ae
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0
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x
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x
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0
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Ab
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1
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x
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x
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1
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Aepi
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2.5
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x
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x
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2.5
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Aex
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0.62
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x
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x
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0.62
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Ac
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2.0
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x
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x
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2.0
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dVgbf
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V
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0.05
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x
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x
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5.00E-02
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dVgbr
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V
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0.045
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x
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x
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Vgb
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V
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1.17
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x
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x
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1.17
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Vgj
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V
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1.15
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x
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x
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1.15
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dVgte
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V
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0.05
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x
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x
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0.05
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Af
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2
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x
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x
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2
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Kf
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2e-11
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x
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x
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2.00E-11
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Kfn
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2e-11
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x
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x
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2e-11
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Iss
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A
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4.8e-18
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x
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x
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4.80E-17
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Iks
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A
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2.5e-4
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x
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x
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2.50E-04
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Cjs
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F
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3.15e-13
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x
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x
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3.15E-13
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Vds
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V
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0.62
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x
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x
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0.62
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ps
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0.34
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x
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x
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0.34
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Vgs
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V
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1.2
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x
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x
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1.2
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As
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1.58
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x
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x
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1.58
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Rth
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300
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x
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x
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300
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Cth
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3e-9
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x
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x
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300
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Comments:
- The Mextram 503 model is not currently supported in this translator.
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