Datasheet

2012-08-21
3
SMBT3904...MMBT3904
Electrical Characteristics at T
A
= 25°C, unless otherwise specified
Parameter
Symbol Values Unit
min. typ. max.
AC Characteristics
Transition frequency
I
C
= 10 mA, V
CE
= 20 V, f = 100 MHz
f
T
300 - - MHz
Collector-base capacitance
V
CB
= 5 V, f = 1 MHz
C
cb
- - 3.5 pF
Emitter-base capacitance
V
EB
= 0.5 V, f = 1 MHz
C
eb
- - 8
Delay time
V
CC
= 3 V, I
C
= 10 mA, I
B1
= 1 mA,
V
BE(off)
= 0.5 V
t
d
- - 35 ns
Rise time
V
CC
= 3 V, I
C
= 10 mA, I
B1
= 1 mA,
V
BE(off)
= 0.5 V
t
r
- - 35
Storage time
V
CC
= 3 V, I
C
= 10 mA, I
B1
= I
B2
= 1 mA
t
stg
- - 200
Fall time
V
CC
= 3 V, I
C
= 10 mA, I
B1
= I
B2
= 1 mA
t
f
- - 50
Noise figure
I
C
= 100 µA, V
CE
= 5 V, f = 1 kHz,
∆ f = 200 Hz, R
S
= 1 kΩ
F
- - 5 dB