Datasheet Summary
Transistor
2SB643, 2SB644
Silicon PNP epitaxial planer type
For low-power general amplification plementary 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
Parameter Collector to base voltage Collector to 2SB643 2SB644 2SB643
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
0.45±0.05
1.25±0.05
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...