Transistor
2SB643, 2SB644
Silicon PNP epitaxial planer type
For low-power general amplification Complementary to 2SD638 and 2SD639
6.
9±0.
1 1.
5 2.
5±0.
1 1.
0
1.
0 2.
4±0.
2 2.
0±0.
2 3.
5±0.
1
Unit: mm
s Features
q
1.
5 R0.
9 R0.
9
1.
0±0.
1
www.
DataSheet4U.
com Parameter Collector to base
voltage Collector to
0.
85
Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg
Ratings –30 –60 –25 –50 –7 –1 – 0.
5 600 150 –55 ~ +150
Unit
0.
55±0.
1
2SB644 2SB643
V
3 2 1
emitter
voltage 2SB644 Emitter to base
voltage Peak collector current Collector current Collector power dissipation Junction temperature Storage temperature
V V A A mW ˚C ˚C
1:Base 2:Collector 3:Emitter EIAJ:SC–71 M Type Mold Package
2.
5 2.
5
s Electrica...