BFP420
Low Noise Silicon Bipolar RF Transistor
• For high gain and low noise amplifiers
3
• Minimum noise figure NFmin = 1.1 dB at 1.8 GHz
2
4
Outstanding G ms = 21 dB at 1.8 GHz
1
• For oscillators up to 10 GHz
• Transition frequency fT = 25 GHz
• Pb-free (RoHS compliant) and halogen-free package
with visible leads
• Qualification report according to AEC-Q101 available
ESD (Electrostatic discharge) sensitive device, observe handling precaution!
Type
BFP420
Marking
AMs
1=B
Pin Configuration
2=E
3=C
4=E
-
Package
-
SOT343
Maximum Ratings at TA = 25 °C, unless otherwise specified
Parameter
Symbol
Collector-emitter voltage
VCEO
Value
Unit
V
TA = 25 °C
4.5
TA = -55 °C
4.1
Collector-emitter voltage
VCES
15
Collector-base voltage
VCBO
15
Emitter-base voltage
VEBO
1.5
Collector current
IC
60
Base current
IB
9
Total power dissipation1)
Ptot
210
mW
Junction temperature
TJ
150
°C
Storage temperature
TStg
mA
TS ≤ 98 °C
1T
S is
-55 ... 150
measured on the emitter lead at the soldering point to the pcb
Thermal Resistance
Parameter
Symbol
Junction - soldering point1)
RthJS
1
Value
Unit
250
K/W
2013-09-19
BFP420
Electrical Characteristics at T A = 25 °C, unless otherwise specified
Parameter
Symbol
Values
Unit
min.
typ.
max.
4.5
5
-
V
ICES
-
-
10
μA
ICBO
-
-
100
nA
IEBO
-
-
3
μA
hFE
60
95
130
DC Characteristics
Collector-emitter breakdown voltage
V(BR)CEO
IC = 1 mA, I B = 0
Collector-emitter cutoff current
VCE = 15 V, VBE = 0
Collector-base cutoff current
VCB = 5 V, IE = 0
Emitter-base cutoff current
VEB = 0.5 V, IC = 0
DC current gain
-
IC = 20 mA, VCE = 4 V, pulse measured
1For
the definition of RthJS please refer to Application Note AN077 (Thermal Resistance Calculation)
2
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BFP420
Electrical Characteristics at TA = 25 °C, unless otherwise specified
Parameter
Symbol
Values
Unit
min.
typ.
max.
18
25
-
Ccb
-
0.15
0.3
Cce
-
0.37
-
Ceb
-
0.55
-
NFmin
-
1.1
-
dB
Gms
-
21
-
dB
14
17
-
IP3
-
22
-
P-1dB
-
12
-
AC Characteristics (verified by random sampling)
Transition frequency
fT
GHz
IC = 30 mA, VCE = 3 V, f = 2 GHz
Collector-base capacitance
pF
VCB = 2 V, f = 1 MHz, VBE = 0 ,
emitter grounded
Collector emitter capacitance
VCE = 2 V, f = 1 MHz, VBE = 0 ,
base grounded
Emitter-base capacitance
VEB = 0.5 V, f = 1 MHz, VCB = 0 ,
collector grounded
Minimum noise figure
IC = 5 mA, VCE = 2 V, f = 1.8 GHz, ZS = ZSopt
Power gain, maximum stable1)
IC = 20 mA, VCE = 2 V, ZS = ZSopt,
ZL = ZLopt , f = 1.8 GHz
|S21|2
Insertion power gain
VCE = 2 V, IC = 20 mA, f = 1.8 GHz,
ZS = ZL = 50 Ω
Third order intercept point at output2)
dBm
VCE = 2 V, IC = 20 mA, f = 1.8 GHz,
ZS = ZL = 50 Ω
1dB compression point at output
IC = 20 mA, VCE = 2 V, ZS = ZL = 50 Ω,
f = 1.8 GHz
1G
ms = |S21 / S12 |
value depends on termination of all intermodulation frequency components.
Termination used for this measurement is 50Ω from 0.1 MHz to 6 GHz
2IP3
3
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BFP420
Total power dissipation P tot = ƒ(TS)
Permissible Pulse Load RthJS = ƒ(tp)
10 3
240
mW
K/W
RthJS
Ptot
180
150
10 2
120
0.5
0.2
0.1
0.05
0.02
0.01
0.005
D=0
90
60
30
0
0
30
60
°C
90
10 1 -7
10
150
10
-6
10
-5
10
-4
10
-3
10
-2
TS
s
10
tp
Permissible Pulse Load
Collector-base capacitance Ccb = ƒ(VCB )
Ptotmax/PtotDC = ƒ(tp )
f = 1MHz
10 1
0.3
Ccb
P totmax/PtotDC
pF
D=0
0.005
0.01
0.02
0.05
0.1
0.2
0.5
-
0.2
0.15
0.1
0.05
10 0 -7
10
10
-6
10
-5
10
-4
10
-3
10
-2
s
10
0
0
0
tp
1
2
V
4
VCB
4
2013-09-19
0
BFP420
Transition frequency fT= ƒ(IC)
Power gain Gma, Gms, |S21|² = ƒ (f)
f = 2 GHz
VCE = 2 V, IC = 20 mA
VCE = parameter in V
30
GHz
44
2 to 4
40
1.5
24
1
36
0.75
32
22
fT
20
Gms
18
28
G [dB]
16
14
20
0.5
12
24
Gma
10
16
2
|S21|
8
12
6
8
4
2
4
0
0
5
10
15
20
25
30
mA
40
0
0
IC
1
2
3
4
5
6
f [GHz]
Power gain Gma, Gms = ƒ (IC)
VCE = 2V
Power gain Gma, Gms = ƒ (VCE )
IC = 20 mA
f = parameter in GHz
f = parameter in GHz
30
dB
30
dB
0.9
0.9
24
24
22
22
1.8
18
2.4
16
3
14
4
12
5
10
6
16
3
14
4
12
5
10
6
8
6
6
4
4
2
2
4
8
12
16
20
24
28
32 mA
0
0
40
IC
2.4
18
8
0
0
1.8
20
G
G
20
0.5
1
1.5
2
2.5
3
3.5
V
4.5
VCE
5
2013-09-19
BFP420
Noise figure F = ƒ(IC )
VCE = 2 V, ZS = ZSopt
Noise figure F = ƒ(IC )
VCE = 2 V, f = 1.8 GHz
4
3
dB
dB
3
F
F
2
2.5
2
1.5
ZS = 50 Ohm
ZS = ZSopt
1.5
1
0.5
0
0
1
f = 6 GHz
f = 5 GHz
f = 4 GHz
f = 3 GHz
f = 2.4 GHz
f = 1.8 GHz
f = 0.9 GHz
4
8
12
16
20
24
28
0.5
0
0
32 mA 38
4
8
12
16
20
28 mA
24
IC
36
IC
Noise figure F = ƒ(f)
Source impedance for min.
VCE = 2 V, ZS = ZSopt
noise figure vs. frequency
VCE = 2 V, IC = 5 mA / 20 mA
3
+j50
dB
+j25
+j100
+j10
2
F
2.4GHz
1.8GHz
0.9GHz
3GHz
0
1.5
10
25
50
100
0.45GHz
4GHz
1
5GHz
IC = 20 mA
IC = 5 mA
-j10
6GHz
0.5
-j25
-j100
-j50
0
0
1
2
3
4
GHz
6
f
6
2013-09-19
BFP420
SPICE GP Model
For the SPICE Gummel Poon (GP) model as well as for the S-parameters
(including noise parameters) please refer to our internet website
www.infineon.com/rf.models.
Please consult our website and download the latest versions before actually
starting your design. You find the BFP420 SPICE GP model in the internet
in MWO- and ADS-format, which you can import into these circuit simulation tools
very quickly and conveniently. The model already contains the package parasitics
and is ready to use for DC and high frequency simulations. The terminals of the
model circuit correspond to the pin configuration of the device. The model
parameters have been extracted and verified up to 10 GHz using typical devices.
The BFP420 SPICE GP model reflects the typical DC- and RF-performance
within the limitations which are given by the SPICE GP model itself. Besides the DC
characteristics all S-parameters in magnitude and phase, as well as noise figure
(including optimum source impedance, equivalent noise resistance and flicker noise)
and intermodulation have been extracted.
7
2013-09-19
Package SOT343
8
BFP420
2013-09-19
BFP420
Edition 2009-12-02
Published by
Infineon Technologies AG
85579 Neubiberg, Germany
© Infineon Technologies AG 2009.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be
considered as a guarantee of characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of
non-infringement, regarding circuits, descriptions and charts stated herein.
Information
For further information on technology, delivery terms and conditions and prices
please contact your nearest Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances.
For information on the types in question please contact your nearest Infineon
Technologies Office.
Infineon Technologies Components may only be used in life-support devices or
systems with the express written approval of Infineon Technologies, if a failure of
such components can reasonably be expected to cause the failure of that
life-support device or system, or to affect the safety or effectiveness of that device
or system.
Life support devices or systems are intended to be implanted in the human body,
or to support and/or maintain and sustain and/or protect human life. If they fail,
it is reasonable to assume that the health of the user or other persons may be
endangered.
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