Yamaha AX-892, Service Manual

Page: 52 / 75

2SC2412K / 2SC4081 / 2SC4617 /
Transistors
2SC5658 / 2SC1740S
0.2
20
10
0.5 1 2 5 10 20 50 100 200
50
100
200
500
V
CE
=5V
3V
1V
Ta=25
°
C
Fig.4 DC current gain vs.
collector current (
Ι
)
DC CURRENT GAIN : h
FE
COLLECTOR CURRENT : I
C
(mA)
0.2 0.5 1 2 5 10 20 50 100 200
20
10
50
100
200
500
25
°
C
−
55
°
C
Ta=100
°
C
V
CE
= 5V
Fig.5 DC current gain vs.
collector current (
ΙΙ
)
DC CURRENT GAIN : h
FE
COLLECTOR CURRENT : I
C
(mA)
Fig. 6 Collector-emitter saturation
voltage vs. collector current
0.2
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
COLLECTOR CURRENT : I
C
(mA)
0.01
0.02
0.05
0.1
0.2
0.5
0.5 1 2 5 10 20 50 100 200
I
C
/I
B
=50
20
10
Ta=25
°
C
Fig.7 Collector-emitter saturation
voltage vs. collector current (
Ι
)
0.2
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
COLLECTOR CURRENT : I
C
(mA)
0.01
0.02
0.05
0.1
0.2
0.5
0.5 1 2 5 10 20 50 100 200
I
C
/I
B
=10
Ta=100
°
C
25
°
C
−
55
°
C
Fig.8 Collector-emitter saturation
voltage vs. collector current (
ΙΙ
)
COLLECTOR SATURATION VOLTAGE : V
CE(sat)
(V)
COLLECTOR CURRENT : I
C
(mA)
0.2
0.01
0.02
0.05
0.1
0.2
0.5
0.5 1 2 5 10 20 50 100
I
C
/I
B
=50
Ta=100
°
C
25
°
C
−
55
°
C
Fig.9 Gain bandwidth product vs.
emitter current
50
−
0.5
−
1
−
2
−
5
−
10
−
20
−
50
−
100
100
200
500
Ta=25
°
C
V
CE
=6V
EMITTER CURRENT : I
E
(mA)
TRANSITION FREQUENCY : f
T
(MHz)
Fig.10 Collector output capacitance vs.
collector-base voltage
Emitter input capacitance vs.
emitter-base voltage
COLLECTOR TO BASE VOLTAGE : V
CB
(V)
EMITTER TO BASE VOLTAGE : V
EB
(V)
COLLECTOR OUTPUT CAPACITANCE : Cob (
pF)
EMITTER INPUT CAPACITANCE
: Cib (
pF)
0.2 0.5 1 2 5 10 20 50
1
2
5
10
20
Cob
Ta=25
°
C
f =1MHz
I
E
=0A
I
C
=0A
Cib
Fig.11 Base-collector time constant
vs. emitter current
−
0.2
−
0.5
−
1
−
2
−
5
−
10
BASE COLLECTOR TIME CONSTANT : Cc·r
bb'
(ps)
EMITTER CURRENT : I
E
(mA)
10
20
50
100
200
Ta=25
°
C
f=32MH
Z
V
CB
=6V