Datasheet

2012-04-04
4
BC846S/ BC846U/ BC847S
Electrical Characteristics at T
A
= 25°C, unless otherwise specified
Parameter
Symbol Values Unit
min. typ. max.
AC Characteristics
Transition frequency
I
C
= 20 mA, V
CE
= 5 V, f = 100 MHz
f
T
- 250 - MHz
Collector-base capacitance
V
CB
= 10 V, f = 1 MHz
C
cb
- 0.95 - pF
Emitter-base capacitance
V
EB
= 0.5 V, f = 1 MHz
C
eb
- 9 -
Short-circuit input impedance
I
C
= 2 mA, V
CE
= 5 V, f = 1 kHz
h
11e
- 4.5 - kΩ
Open-circuit reverse voltage transf. ratio
I
C
= 2 mA, V
CE
= 5 V, f = 1 kHz
h
12e
- 2 - 10
-4
Short-circuit forward current transf. ratio
I
C
= 2 mA, V
CE
= 5 V, f = 1 kHz
h
21e
- 330 - -
Open-circuit output admittance
I
C
= 2 mA, V
CE
= 5 V, f = 1 kHz
h
22e
- 30 - µS
Noise figure
I
C
= 200 µA, V
CE
= 5 V, f = 1 kHz,
∆ f = 200 Hz, R
S
= 2 kΩ
F
- - 10 dB