Datasheet

2010-10-08
3
BFR181W
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
I
C
= 10 mA, V
CE
= 8 V, f = 500 MHz
f
T
6 8 - GHz
Collector-base capacitance
V
CB
= 10 V, f = 1 MHz, V
BE
= 0 ,
emitter grounded
C
cb
- 0.29 0.45 pF
Collector emitter capacitance
V
CE
= 10 V, f = 1 MHz, V
BE
= 0 ,
base grounded
C
ce
- 0.22 -
Emitter-base capacitance
V
EB
= 0.5 V, f = 1 MHz, V
CB
= 0 ,
collector grounded
C
eb
- 0.35 -
Minimum noise figure
I
C
= 2 mA, V
CE
= 8 V, Z
S
= Z
Sopt
,
f = 900 MHz
I
C
= 2 mA, V
CE
= 8 V, Z
S
= Z
Sopt
,
f = 1.8 GHz
NF
min
-
-
0.9
1.2
-
-
dB
Power gain, maximum stable
1)
I
C
= 5 mA, V
CE
= 8 V, Z
S
= Z
Sopt
, Z
L
= Z
Lopt
,
f = 900 MHz
G
ms
- 19 - dB
Power gain, maximum available
2)
I
C
= 5 mA, V
CE
= 8 V, Z
S
= Z
Sopt
, Z
L
= Z
Lopt
,
f = 1.8 GHz
G
ma
- 13.5 - dB
Transducer gain
I
C
= 5 mA, V
CE
= 8 V, Z
S
= Z
L
= 50 Ω,
f = 900 MHz
I
C
= 5 mA, V
CE
= 8 V, Z
S
= Z
L
= 50 Ω,
f = 1.8 MHz
|S
21e
|
2
-
-
15.5
10
-
-
dB
1
G
ms
= |S
21
/ S
12
|
2
G
ma
= |S
21e
/ S
12e
| (k-(k²-1)
1/2
)