Power Transistors
2SD1257, 2SD1257A
com SiliconNPN epitaxial planar type
For power switching Complementary to 2SB934
10. 0±0. 3
8. 5±0. 2 6. 0±0. 5
3. 4±0. 3
Unit: mm
1. 0±0. 1
s Features
q q q q
Low collector to emitter saturation voltage VCE(sat) Satisfactory linearity of foward current transfer ratio hFE Large collector current IC N type package enabling direct soldering of the radiating fin to the printed circuit board, etc. of small electronic equipment. (TC=25˚C)
Ratings 130 150 80 100 7 15 7 40 1. 3 150 –55 to +150 Unit V
1. 5±0. 1
1. 5max.
1. 1max.
10. 5min.
2. 0
0. 8±0. 1
0. 5max.
2. 54±0. 3 5. 08±0. 5 1 2 3
s Absolute Maximum Ratings
Parameter Collector to base voltage Col...