This is one of the semiconductor types. This part name is D1761.
This product has 2SD1761 functions.
Manufacturers of product is Rohm.
Image and pinout :
D1761 PDF Datasheet
Some of the text files within the PDF file
Triple Diffused Planar NPN Silicon Transistor
1. Low collector saturation voltage
2. Excellent current characteristics of DC current gain
3. Large collector dissipation
4. Complementary pair with 2SB1187
[ … ]
Please refer to the file for details.