Datasheet Summary
Power Transistors
2SD1277, 2SD1277A
Silicon NPN triple diffusion planar type Darlington
0.7±0.1
For midium speed power switching plementary 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
14.0±0.5...
