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BFS481 Datasheet, PDF (1/6 Pages) Siemens Semiconductor Group – NPN Silicon RF Transistor (For low-noise, high-gain broadband amplifier at collector currents from 0.5 to 12 mA)
BFS481
NPN Silicon RF Transistor
 For low-noise, high-gain broadband amplifier
at collector currents from 0.5 mA to 12 mA
 fT = 8 GHz
F = 1.4 dB at 900 MHz
 Two (galvanic) internal isolated
Transistors in one package
C1
E2
B2
6
5
4
4
5
6
3
2
1
VPS05604
TR2
TR1
1
2
3
B1
E1
C2
EHA07196
ESD: Electrostatic discharge sensitive device, observe handling precaution!
Type
BFS481
Marking
RFs
Pin Configuration
Package
1=B 2=E 3=C 4=B 5=E 6=C SOT363
Maximum Ratings
Parameter
Collector-emitter voltage
Collector-emitter voltage
Collector-base voltage
Emitter-base voltage
Collector current
Base current
Total power dissipation
TS  83 °C 1)
Junction temperature
Ambient temperature
Storage temperature
Symbol
VCEO
VCES
VCBO
VEBO
IC
IB
Ptot
Tj
TA
Tstg
Value
Unit
12
V
20
20
2
20
mA
2
175
mW
150
°C
-65 ... 150
-65 ... 150
Thermal Resistance
Junction - soldering point2)
RthJS
1TS is measured on the collector lead at the soldering point to the pcb
2For calculation of RthJA please refer to Application Note Thermal Resistance
 380
K/W
1
Jun-27-2001