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 IRF740PBF is a 400V 10A 125W TO220AB Package Third generation power MOSFETs from Vishay provide the designer with the best combination of fast switching, low on-resistance and cost-effectiveness.
This is Boost Module With Digital Display which is a high-performance step-up switching current module. The XL6009 DC-DC 4.5-32V to 5V-35V XL6009 Boost Step-up Module Adjustable Digital Voltmeter.
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