Semiconductor Group
1
Dec-11-1996
BF 771
NPN Silicon RF Transistor
For modulators and
amplifiers in TV and VCR tuners
ESD: Electrostatic discharge sensitive device, observe handling precaution!
Type
Marking Ordering Code
Pin Configuration
Package
BF 771
RBs
Q62702-F1225
1 = B
2 = E
3 = C
SOT-23
Maximum Ratings
Parameter
Symbol
Values
Unit
Collector-emitter voltage
V
CEO
12
V
Collector-emitter voltage
V
CES
20
Collector-base voltage
V
CBO
20
Emitter-base voltage
V
EBO
2
Collector current
I
C
80
mA
Base current
I
B
10
Total power dissipation
T
S
69 C
P
tot
580
mW
Junction temperature
T
j
150
C
Ambient temperature
T
A
- 65 ... + 150
Storage temperature
T
stg
- 65 ... + 150
Thermal Resistance
Junction - soldering point
1)
R
thJS
140
K/W
1)
T
S
is measured on the collector lead at the soldering point to the pcb.
Semiconductor Group
2
Dec-11-1996
BF 771
Electrical Characteristics at
T
A
= 25C, unless otherwise specified.
Parameter
Symbol
Values
Unit
min.
typ.
max.
DC Characteristics
Collector-emitter breakdown voltage
I
C
= 1 mA,
I
B
= 0
V
(BR)CEO
12
-
-
V
Collector-emitter cutoff current
V
CE
= 20 V,
V
BE
= 0
I
CES
-
-
100
A
Collector-base cutoff current
V
CB
= 10 V,
I
E
= 0
I
CBO
-
-
100
nA
Emitter-base cutoff current
V
EB
= 1 V,
I
C
= 0
I
EBO
-
-
1
A
DC current gain
I
C
= 30 mA,
V
CE
= 8 V
h
FE
50
100
200
-
Semiconductor Group
3
Dec-11-1996
BF 771
Electrical Characteristics at
T
A
= 25C, unless otherwise specified.
Parameter
Symbol
Values
Unit
min.
typ.
max.
AC Characteristics
Transition frequency
I
C
= 50 mA,
V
CE
= 8 V,
f = 500 MHz
f
T
6
8
-
GHz
Collector-base capacitance
V
CB
= 10 V,
f = 1 MHz
C
cb
-
0.68
1
pF
Collector-emitter capacitance
V
CE
= 10 V,
f = 1 MHz
C
ce
-
0.24
-
Emitter-base capacitance
V
EB
= 0.5 V,
f = 1 MHz
C
eb
-
1.8
-
Noise figure
I
C
= 10 mA,
V
CE
= 8 V,
Z
S
=
Z
Sopt
f = 900 MHz
f = 1.8 GHz
F
-
-
2.1
1.3
-
-
dB
Power gain
2)
I
C
= 30 mA,
V
CE
= 8 V,
Z
S
=
Z
Sopt
Z
L
=
Z
Lopt
f = 900 MHz
f = 1.8 GHz
G
ma
-
-
9
14.5
-
-
Transducer gain
I
C
= 30 mA,
V
CE
= 8 V,
Z
S
=
Z
L
= 50
f = 900 MHz
f = 1.8 GHz
|
S
21e
|
2
-
-
7
12.5
-
-
2)
G
ma
= |
S
21
/
S
12
| (k-(k
2
-1)
1/2
)
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