1
Transistor
2SB643, 2SB644
Silicon PNP epitaxial planer type
For low-power general amplification
Complementary to 2SD638 and 2SD639
n
Features
l M type package allowing easy automatic and manual insertion as
well as stand-alone fixing to the printed circuit board.
n
Absolute Maximum Ratings (Ta=25˚C)
Unit: mm
Parameter
Collector to
base voltage
Collector to
emitter voltage
Emitter to base voltage
Peak collector current
Collector current
Collector power dissipation
Junction temperature
Storage temperature
1:Base
2:Collector EIAJ:SC–71
3:Emitter M Type Mold Package
6.9– 0.1
0.55– 0.1 0.45– 0.05
1.0
–
0.1
1.0
2.5– 0.1
1.0
1.5
1.5 R0.9
R0.9
R0.7
0.4
0.85
3.5
–
0.1
2.0
–
0.2
2.4
–
0.2
1.25
–
0.05
4.1
–
0.2
4
.5
–
0.1
2.5 2.5
123
Symbol
V
CBO
V
CEO
V
EBO
I
CP
I
C
P
C
T
j
T
stg
Ratings
–30
–60
–25
–50
–7
–1
– 0.5
600
150
–55 ~ +150
Unit
V
V
V
A
A
mW
˚C
˚C
2SB643
2SB644
2SB643
2SB644
n
Electrical Characteristics (Ta=25˚C)
Parameter
Collector cutoff current
Collector to base
voltage
Collector to emitter
voltage
Emitter to base voltage
Forward current transfer ratio
Collector to emitter saturation voltage
Transition frequency
Collector output capacitance
Symbol
I
CBO
I
CEO
V
CBO
V
CEO
V
EBO
h
FE1
*1
h
FE2
V
CE(sat)
f
T
C
ob
Conditions
V
CB
= –20V, I
E
= 0
V
CE
= –20V, I
B
= 0
I
C
= –10m A, I
E
= 0
I
C
= –2mA, I
B
= 0
I
E
= –10m A, I
C
= 0
V
CE
= –10V, I
C
= –150mA
*2
V
CE
= –10V, I
C
= –500mA
*2
I
C
= –300mA, I
B
= –30mA
*2
V
CB
= –10V, I
E
= 10mA, f = 200MHz
V
CB
= –10V, I
E
= 0, f = 1MHz
min
–30
–60
–25
–50
–7
85
40
typ
90
– 0.35
200
6
max
–100
–1
340
– 0.6
15
Unit
nA
m A
V
V
V
V
MHz
pF
*1
h
FE1
Rank classification
Rank Q R S
h
FE1
85 ~ 170 120 ~ 240 170 ~ 340
2SB643
2SB644
2SB643
2SB644
*2
Pulse measurement