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BFR93A
Low Noise Silicon Bipolar RF Transistor
• For low-noise, high gain broadband amplifiers at
collector currents from 2 mA to 30 mA
• 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
BFR93A R2s 1=B 2=E 3=C SOT23
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 IC90 mA
Base current IB9
Total power dissipation1)
TS ≤ 111 °C
Ptot 300 mW
Junction temperature TJ150 °C
Storage temperature TSt
g
-55 ... 150
Thermal Resistance
Parameter Symbol Value Unit
Junction - soldering point2) RthJS 130 K/W
1TS is measured on the collector lead at the soldering point to the pcb
2For the definition of RthJS please refer to Application Note AN077 (Thermal Resistance Calculation)
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BFR93A
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 = 2.5 V, IC = 0
IEBO - - 10 µA
DC current gain
IC = 30 mA, VCE = 8 V, pulse measured
hFE 70 100 140 -
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BFR93A
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 = 30 mA, VCE = 8 V, f = 500 MHz
fT4.5 6 - GHz
Collector-base capacitance
VCB = 10 V, f = 1 MHz, VBE = 0 ,
emitter grounded
Ccb - 0.54 0.8 pF
Collector emitter capacitance
VCE = 10 V, f = 1 MHz, VBE = 0 ,
base grounded
Cce - 0.25 -
Emitter-base capacitance
VEB = 0.5 V, f = 1 MHz, VCB = 0 ,
collector grounded
Ceb - 1.9 -
Minimum noise figure
IC = 5 mA, VCE = 8 V, ZS = ZSopt,
f = 900 MHz
f = 1.8 GHz
NFmin
-
-
1.5
2.6
-
-
dB
Power gain, maximum available1)
IC = 30 mA, VCE = 8 V, ZS = ZSopt, ZL = ZLopt,
f = 900 MHz
f = 1.8 GHz
Gma
-
-
14.5
9.5
-
-
Transducer gain
IC = 30 mA, VCE = 8 V, ZS = ZL = 50 Ω,
f = 900 MHz
f = 1.8 MHz
|S21e|2
-
-
12.5
7
-
-
dB
Third order intercept point at output2)
IC = 30mA, VCE = 8 V, ZS = ZL = 50 Ω,
f = 900 MHz
IP3- 15 - dBm
1dB Compression point
IC = 30 mA, VCE = 8 V, ZS = ZL = 50 Ω,
f = 900 MHz
P-1dB - 6 -
1Gma = |S21e / S12e| (k-(k²-1)1/2)
2IP3 value depends on termination of all intermodulation frequency components.
Termination used for this measurement is 50Ω from 0.2 MHz to 12 GHz
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BFR93A
Total power dissipation Ptot = ƒ(TS)
0 15 30 45 60 75 90 105 120 °C 150
TS
0
50
100
150
200
250
mW
350
Ptot
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BFR93A
Package SOT23
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BFR93A
Edition 2009-11-16
Published by
Infineon Technologies AG
81726 Munich, Germany
2009 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee
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
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
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