RATING CHARACTERISTIC CURVES ( 2SD1781KPT )
Fig.5 Collector-emitter saturation
voltage vs. collector current (2)
COLLECTOR SATURATION VOLTAGE: V
CE (sat)
mV
1000
IC/IB=10
Fig.6 Gain bandwidthproduct vs.
emitter current
1000
500
TRANSITION FREQUENCY: f
T
(MHz)
Ta=25 C
V
CE
=5V
O
500
200
Ta=100 C
O
25 C
-55
O
C
O
200
100
50
100
50
20
10
20
10
1
2
5
10 20
50 100 200 500 1000
-1
-2
-5
-10 -20
-50 -100 -200
COLLECTOR CURRENT: I
C
(A)
EMITTER CURRENT: I
E
(mA)
Fig.7 Collector output capacitance
vs. collector-base voltage
100
COLLECTOR OUTPUT CAPACITANCE:Cob
(pF)
T
a
=25 C
f=1MHZ
IE=0A
O
Fig.8 Emitter input capacitance vs.
emitter-base voltage
T
a
=25 C
f=1MHZ
IC=0A
O
200
EMITTER OUTPUT CAPACITANCE:Cib
(pF)
50
100
50
20
10
20
10
5
0.1 0.2
0.5 1.0 2.0
5.0 10
20 50
5
0.1 0.2
0.5 1.0 2.0
5.0
10
COLLECTOR TO BASE VOLTAGE : V
CS
(V)
EMITTER TO BASE VOLTAGE : V
EB
(V)
CHENMKO [ CHENMKO ENTERPRISE CO. LTD. ]
