The 2SK2850, 2SK-2850, K2850, 2850 Is a 6A 900V 125W N-Channel MOSFET Or Field Effect Transistor TO-3P Package 3 Pin Leads, Product Manufactured by Company Fuji Electric Corp.
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 ENC28J60-I/SO is a standalone Ethernet controller with an industry standard Serial Peripheral Interface (SPI™). It is designed to serve as an Ethernet network interface for any microcontroller equipped with SPI Communication.
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.