START540 Datasheet, PDF (4/7 Pages) STMicroelectronics – NPN Silicon RF Transistor

START540
SPICE PARAMETERS (Gummel-Poon Model, Berkley-SPICE 2G.6 Syntax)
TRANSISTOR CHIP DATA
Symbol
Value
TMEAS
27.0
IS
1.00E-16
ISE
1.58E-11
NR
1
ISC
1.55E-15
IKF
{0.217*((T(^oC)+273.15)/
300.15)^(-1.63)}
TR
7E-10
XTF
9.84
RB
10.8
RC
3.77
CJE
421E-15
CJC
160E-15
CJS
112E-15
Symbol
FC
EG
NF
NE
BR
NC
PTF
ITF
RBM
RE
VJE
VJC
VJS
Value
0.66
1.12
1
3.27
9.52
1.495
32.0
0.498
2.94
0.42
1.03
0.6
0.4
Symbol
XJBC
XTI
BF
VAF
VAR
TF
VTF
MJE
MJC
MJS
IKR
XTB
PACKAGE EQUIVALENT CIRCUIT
C2
C=66 fF
Value
0.53
3.76
320
70
2.3
3.0E-12
27.9
0.497
0.292
0.245
8.32E-3
-0.54
B.
. ^L4
L3 B’ _Transistor C’ L5
. ^L6
.C
L=0.6 nH
L=0.35 nH
Chip
L=0.3 nH
L=0.6 nH
E’
L1 L=0.1 nH
C1
C=436 fF
. C3
C=334 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 Table A (Spice Parameters extracted in saturation region)
RW
Vjj
ENP
VRP
1.173
0.8
2.085
{4.12*((TEMPER+273.15)/300.15)^(0.303)}
RP
1.00E-6
4/7