bjt


Model Description

References

Parameter Values

NameDescriptionDefault ValueRangeType
AreaArea scaling factor1 from (0.0:inf] real
TempDevice temperature override [C]-all xreal
IsTransport saturation current [A]1e-16 from (0.0:inf] real
BfIdeal max fwd beta100 from (0.0:inf] real
NfForward current emission coeff1.0 from (0.0:inf] real
VafForward early voltage [v]1e9 from [0.0:inf] real
IkfForward beta high-current roll-off [A]1e9 from (0.0:inf] real
IseB-E leakage current [A]0 from [0.0:inf] real
NeB-E p-n leakage emission coeff1.5 from (0.0:inf] real
BrIdeal max rev beta1.0 from (0.0:inf] real
NrReverse current emission coeff1.0 from (0.0:inf] real
VarForward Early voltage [v]1e9 from [0.0:inf] real
IkrReverse beta high-current roll-off [A]1e9 from (0.0:inf] real
IscB-C leakage current [A]0 from [0.0:inf] real
NcB-C p-n leakage emission coeff2.0 from (0.0:inf] real
RbZero-bias maximum base resistance [Ohm]0.0 from [0.0:inf] real
IrbCurrent where Rb falls halfway [A]1e9 from [0.0:inf] real
RbmZero-bias minimum base res (def = Rb) [Ohm]Rb from [0.0:inf] real
ReEmitter ohmic resistance [Ohm]0.0 from [0.0:inf] real
RcCollector ohmic resistance [Ohm]0.0 from [0.0:inf] real
CjeB-E zero-bias p-n cap [F]0.0 from [0.0:inf] real
VjeB-E built-in potential [v]0.75 from [0.0:inf] real
MjeB-E p-n grading factor0.33 from (0.0:inf] real
CjcB-C zero-bias p-n cap [F]0.0 from [0.0:inf] real
VjcB-C built-in potential [v]0.75 from [0.0:inf] real
MjcB-C p-n grading factor0.33 from (0.0:inf] real
XcjcFraction of Cjc connected to Rb1.0 from [0.0:inf] real
CjsC-S zero-bias p-n cap [F]0.0 from [0.0:inf] real
VjsSubstrate built-in potential [v]0.75 from [0.0:1e9] real
MjsSubstrate p-n grading factor0.0 from [0.0:inf] real
FcForward bias depletion cap coeff.0.5 from (0.0:inf] real
XtfTransit time bias coeff0.0 from [0.0:inf] real
TfIdeal forward transit time [s]0.0 from [0.0:inf] real
VtfTransit time dependency on Vbe [v]1e9 from [0.0:inf] real
ItfTransit time dependence on Ic [A]0 from [0.0:inf] real
PtfExcess phase at 1/(2*pi*TF) [deg]0.0 from [0.0:inf] real
TrIdeal reverse transit time [s]0.0 from [0.0:inf] real
KfFlicker noise coeff0 from [0.0:inf] real
AfFlicker noise exponent1 from (0.0:inf] real
IssUnused: Substrate P-N staturation current [A]0 from [0.0:inf] real
NsUnused: Substrate p-n emission coeff1.0 from (0.0:inf] real
NkUnused: High current roll-off coeff0.5 from (0.0:inf] real
TnomParam meas temp [C]25 from (-273.15:inf) real
EgBandgap voltage [eV]1.11 from [0.0:inf] real
XtbFwd and rev beta temp coeff0.0 from [0.0:inf] real
XtiIS temperature effect exponent3.0 from [0.0:inf] real
ImaxIgnored!1e3all xreal
AbIgnored!0all xreal
FbIgnored!0all xreal
FfeIgnored!0all xreal
LateralIgnored!0all xinteger
ApproxqbIgnored!0all xinteger
RbModelIgnored!0all xinteger
ModeIgnored!0all xinteger
NoiseIgnored!0all xinteger
Delaydelay of Ice(Vbe)0 from [0.0:inf] real
NPNVerilog-A parameter1 from [0:1] integer
PNPVerilog-A parameter0 from [0:1] integer
LbBase inductance [H]0 from [0:inf] real
LcCollector inductance [H]0 from [0:inf] real
LeEmitter inductance [H]0 from [0:inf] real

Copyright 2003 Tiburon Design Automation, Inc. All rights reserved.