The 2SC3679, 2SC-3679, 3679 is a 900V 5A 100W Silicon NPN Triple Diffused Planar High Voltage Switching Transistor TO-218 Package, Manufactured By SANKEN Semiconductor.
The HW-040 Rotary Encoder Module is a device that generates an electrical signal based on how much the rotary input device (knob) is rotated and the direction it is rotating
These epitaxial planar transistors are mounted in the TO-126 plastic package. The NPN types are the BD135 and BD139, and the complementary PNP types are the BD136 and BD140.