The Darlington Bipolar Power Transistor is designed for general-purpose amplifier and low speed switching applications. TIP120, TIP121, TIP122 (NPN); TIP125, TIP126, TIP127 (PNP) are complementary devices.
The TIP31C is a base island technology NPN power transistor in TO-220 plastic package with better performances than the industry standard TIP31C that make this device suitable for audio, power linear and switching applications. The PNP type is TIP32C.
The IRF830PBF is a 500V 4.5A 100W TO-220AB Package Third generation power MOSFETs from Vishay provide the designer with the best combination of fast switching, low on-resistance and cost-effectiveness.
The 2SC3198 is a 60V 150mA 400mW NPN General Purpose Transistor TO-92 Package. This NPN Silicon Epitaxial Planar Transistor for switching and AF amplifier applications.