The IRF9Z34 is a 60V 18A Third generation power MOSFETs from Vishay provide the designer with the best combination of fast switching, ruggedized device design, low on-resistance and cost-effectiveness.
The 2SK3515, 2SK-3515, K3515, 3515 is a 450V, 10A, 48W TO-220NIS Package MOSFET, The FUJI Electric manufacturer is a IC Chips with N CHANNEL SILICON POWER MOSFET for more details of 2SK3515 can be seen below.
The CA3140A and CA3140EZ are integrated circuit operational amplifiers that combine the advantages of high voltage PMOS transistors with high voltage bipolar transistors on a single monolithic chip.
The 2SK2996 (Q), 2SK-2996, K2996, 2996 Is a Transistor MOSFET N-Channel Silicon 600V 10A 3-Pins (3+tab) TO-220F In The Fet Transistors, MOSFETs Category. Check Part Details, Parametric And Specifications
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.