The 2SK3451, 2SK-3451, K3451, 3451 is a Transistor MOSFET N-Channel Silicon 600V 13A 80W 3-Pins (3+tab) TO-220F In The FET Transistors, MOSFETs Category. Check Part Details, Parametric And Specifications.
The BD242C is a 3A 100V PNP Bipolar Power Transistor designed for use in general purpose amplifier and switching applications. BD241C (NPN), BD242B (PNP) and BD242C (PNP) are complementary devices.
The HA17741/PS is an internal phase compensation high-performance operational amplifier, that is appropriate for use in a wide range of applications in the test and control fields chips DIP-8 Pins Package.
The MJ802G MJ802 802 is a 100V 30A 200W transistor, Use for as an output device in complementary audio amplifiers to 100−Watts music power per channel.