START450 Datasheet, PDF (3/7 Pages) STMicroelectronics – NPN Silicon RF Transistor

SPICE PARAMETERS (Gummel-Poon Model, Berkley-SPICE 2G.6 Syntax)
TRANSISTOR CHIP DATA
Symbol
Value
TMEAS
27.0
IS
1.9E-16
ISE
1.9E-12
NR
1
ISC
3.19E-15
IKF
{1.448*((T(^oC)+273.15)/
300.15)^(-1.6)}
TR
7E-10
XTF
20
RB
2.7
RC
1.38
CJE
1462E-15
CJC
660E-15
CJS
425E-15
Symbol
FC
EG
NF
NE
BR
NC
PTF
ITF
RBM
RE
VJE
VJC
VJS
Value
0.8
1.12
1
2.658
13.7
1.5
35
4.8
0.64
0.15
1.1
0.84
0.453
Symbol
XJBC
XTI
BF
VAF
VAR
TF
VTF
MJE
MJC
MJS
IKR
XTB
PACKAGE EQUIVALENT CIRCUIT
C2
C=21 fF
START450
Value
0.3
4.51
295
40
2.5
3.1E-12
27
0.44
0.31
0.281
43.5E-3
-0.32
B.
. ^L4
L3 B’ _Transistor C’ L5
. ^L6
.C
L=0.3 nH
L=0.8 nH
Chip
L=0.1 nH
L=0.3 nH
E’
L1 L=0.15 nH
C1
C=740 fF
. C3
C=785 fF
L2 L=0.05 nH
._E
In order to avoid high complexity of the package equivalent circuit, the two emitter leads of SOT-343
package are combined in one electrical connection.
FOR MORE ACCURACY SIMULATION IN SATURATION REGION :
Adding the 5 Spice parameters showed in Table A and using ST Spice Library (available on request) you
can achieve a more accuracy simulation in the saturation region. ST Spice library is compatible with
following simulators: ELDO MENTOR (any version), SPECTRE CADENCE (any version), ADS (version
2001 only).
Table A (Spice Parameters extracted in saturation region)
RW
Vjj
ENP
VRP
2.594
0.769
2.45
{4.64*((TEMPER+273.15)/300.15)^(1.5)}
RP
1.00E-6
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