START450TR STMicroelectronics, START450TR Datasheet - Page 3

• Manufacturer Part Number: START450TR
• Description: RF Bipolar Small Signal NPN High Frequency
• Manufacturer: STMicroelectronics

Specifications of START450TR

• Dc Collector/base Gain Hfe Min: 160
• Dc Current Gain Hfe Max: 160
• Mounting Style: SMD/SMT
• Configuration: Single
• Transistor Polarity: NPN
• Maximum Operating Frequency: 42000 MHz
• Collector- Emitter Voltage Vceo Max: 4.5 V
• Emitter- Base Voltage Vebo: 1.5 V
• Continuous Collector Current: 100 mA
• Power Dissipation: 450 mW
• Maximum Operating Temperature: + 150 C
• Package / Case: SOT-323-4
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TRANSISTOR CHIP DATA
PACKAGE EQUIVALENT CIRCUIT
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.
SPICE PARAMETERS (Gummel-Poon Model, Berkley-SPICE 2G.6 Syntax)
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)
Symbol
TMEAS
CJC
XTF
CJE
CJS
ISE
ISC
NR
IKF
RC
TR
RB
IS
2.594
RW
{1.448*((T(
B
B
300.15)^(-1.6)}
.
.
1462E-15
3.19E-15
660E-15
425E-15
1.9E-16
1.9E-12
7E-10
Value
27.0
1.38
2.7
20
o
0.769
1
C)+273.15)/
Vjj
L=0.3 nH
L=0.3 nH
L4
L4
.
.
ENP
2.45
L=0.8 nH
L=0.8 nH
Symbol
RBM
C=740 fF
C=740 fF
VJC
PTF
VJE
VJS
EG
NC
ITF
FC
NF
NE
BR
RE
L3
L3
C1
C1
B’
B’
C=21 fF
C=21 fF
Transistor
Transistor
L2
L2
Chip
Chip
L1
L1
C2
C2
.
.
.
.
{4.64*((TEMPER+273.15)/300.15)^(1.5)}
E’
E’
L=0.15 nH
L=0.15 nH
L=0.05 nH
L=0.05 nH
E
E
Value
2.658
0.453
1.12
13.7
0.64
0.15
0.84
0.8
1.5
4.8
1.1
35
1
C=785 fF
C=785 fF
C’
C’
C3
C3
L=0.1 nH
L=0.1 nH
L5
L5
VRP
.
.
Symbol
XJBC
MJC
VAF
VAR
VTF
MJE
MJS
XTB
IKR
XTI
BF
TF
L=0.3 nH
L=0.3 nH
L6
L6
.
.
C
C
3.1E-12
43.5E-3
Value
0.281
-0.32
4.51
0.44
0.31
295
START450
0.3
2.5
40
27
1.00E-6
RP
3/7