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Power Transistors
2SD1277, 2SD1277A
Silicon NPN triple diffusion planar type Darlington
0.7±0.1
For midium speed power switching Complementary to 2SB951 and 2SB951A
10.0±0.2 5.5±0.2 2.7±0.2 4.2±0.2
4.2±0.2
Unit: mm
q q
16.7±0.3
q
High foward current transfer ratio hFE High-speed switching Full-pack package which can be installed to the heat sink with one screw
7.5±0.2
s Features
φ3.1±0.1
4.0
14.0±0.5
s
Absolute Maximum Ratings (TC=25˚C)
Parameter Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg Ratings 60 80 60 80 7 12 8 45 2 150 –55 to +150 Unit V 2SD1277 2SD1277A 2SD1277
1.4±0.1
1.3±0.2
Solder Dip
0.8±0.1
0.5 +0.2 –0.1
Collector to base voltage Collector to
2.54±0.25 5.08±0.
2SD1277 Datasheet
