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BFP181
1
2
3
4
Low Noise Silicon Bipolar RF Transistor
• For low noise, high-gain broadband amplifiers at
collector currents from 0.5 mA to 12 mA
• fT = 8 GHz, NFmin = 0.9 dB at 900 MHz
• Pb-free (RoHS compliant) package
• Qualification report according to AEC-Q101 available
ESD (Electrostatic discharge) sensitive device, observe handling precaution!
Type Marking Pin Configuration Package
BFP181 RFs 1 = C 2 = E 3 = B 4 = E - - SOT143
Maximum Ratings at T
A
= 25 °C, unless otherwise specified
Parameter Symbol Value Unit
Collector-emitter voltage VCEO 12 V
Collector-emitter voltage VCES 20
Collector-base voltage VCBO 20
Emitter-base voltage VEBO 2
Collector current IC20 mA
Base current IB2
Total power dissipation1)
TS ≤ 75 °C
Ptot 175 mW
Junction temperature TJ150 °C
Storage temperature TSt
g
-55 ... 150
Thermal Resistance
Parameter Symbol Value Unit
Junction - soldering point2) RthJS 430 K/W
1TS is measured on the collector lead at the soldering point of the pcb
2For the definition of RthJS please refer to Application Note AN077 (Thermal Resistance Calculation)
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Electrical Characteristics at TA = 25 °C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
DC Characteristics
Collector-emitter breakdown voltage
IC = 1 mA, IB = 0
V(BR)CEO 12 - - V
Collector-emitter cutoff current
VCE = 20 V, VBE = 0
ICES - - 100 µA
Collector-base cutoff current
VCB = 10 V, IE = 0
ICBO - - 100 nA
Emitter-base cutoff current
VEB = 1 V, IC = 0
IEBO - - 1 µA
DC current gain
IC = 5 mA, VCE = 8 V, pulse measured
hFE 70 100 140 -
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BFP181
Electrical Characteristics at T
A
= 25 °C, unless otherwise specified
Parameter Symbol Values Unit
min. typ. max.
AC Characteristics (verified by random sampling)
Transition frequency
IC = 10 mA, VCE = 8 V, f = 500 MHz
fT6 8 - GHz
Collector-base capacitance
VCB = 10 V, f = 1 MHz, VBE = 0 ,
emitter grounded
Ccb - 0.19 0.4 pF
Collector emitter capacitance
VCE = 10 V, f = 1 MHz, VBE = 0 ,
base grounded
Cce - 0.3 -
Emitter-base capacitance
VEB = 0.5 V, f = 1 MHz, VCB = 0 ,
collector grounded
Ceb - 0.4 -
Minimum noise figure
IC = 2 mA, VCE = 8 V, ZS = ZSopt,
f = 900 MHz
IC = 2 mA, VCE = 8 V, ZS = ZSopt,
f = 1.8 GHz
NFmin
-
-
0.9
1.2
-
-
dB
Power gain, maximum stable1)
IC = 5 mA, VCE = 8 V, ZS = ZSopt, ZL = ZLopt ,
f = 900 MHz
IC = 5 mA, VCE = 8 V, ZS = ZSopt, ZL = ZLopt ,
f = 1.8 GHz
Gms
-
-
21
17.5
-
-
dB
Transducer gain
IC = 5 mA, VCE = 8 V, ZS = ZL = 50 Ω,
f = 900 MHz
IC = 5 mA, VCE = 8 V, ZS = ZL = 50 Ω,
f = 1.8 GHz
|S21e|2
-
-
17.5
12.5
-
-
1Gms = |S21 / S12|
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BFP181
Total power dissipation Ptot = ƒ(TS)
0 20 40 60 80 100 120 °C 150
TS
0
20
40
60
80
100
120
140
160
mW
200
Ptot
Permissible Pulse Load RthJS = ƒ(tp)
10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0
s
tp
1
10
2
10
3
10
K/W
RthJS
0.5
0.2
0.1
0.05
0.02
0.01
0.005
D = 0
Permissible Pulse Load
Ptotmax/PtotDC = ƒ(tp)
10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 0
s
tp
0
10
1
10
2
10
-
Ptotmax/PtotDC
D = 0
0.005
0.01
0.02
0.05
0.1
0.1
0.5
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Package SOT143
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BFP181
Edition 2009-11-16
Published by
Infineon Technologies AG
81726 Munich, Germany
2009 Infineon Technologies AG
All Rights Reserved.
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of conditions or characteristics. With respect to any examples or hints given herein,
any typical values stated herein and/or any information regarding the application of
the device, Infineon Technologies hereby disclaims any and all warranties and
liabilities of any kind, including without limitation, warranties of non-infringement of
intellectual property rights of any third party.
Information
For further information on technology, delivery terms and conditions and prices,
please contact the 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 the nearest Infineon
Technologies Office.
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only 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
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reasonable to assume that the health of the user or other persons may be
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