The CD4049BM and CD4050BM devices are inverting and noninverting hex buffers, and feature logic-level conversion using only one supply voltage (VCC) Inverting Hex Buffer IC SOP-16 Pins Package.
The C945 is an age old Japanese Bipolar audio frequency NPN transistor 60V 150mA TO-92 package. It has a decent gain value (hfe) of maximum 700 and is highly linear. Hence it was widely used in amplifier.
The YX850 Power Failure Automatic Switching Standby Battery Lithium Battery Module DC5V-48V Emergency Converter. It is an automatic switching module. When the battery is dead or there is a problem with the battery, it is powered by the power supply.
The MJH6284G, MJH6284, 6284 is a – 100V 20A 4MHz 160W NPN - Darlington Bipolar Transistor Through Hole TO-218 from ON Semiconductor. MJH6284(NPN), MJH6287(PNP) Darlington Complementary Silicon Power Transistors.
The MJE13007 is designed for high−voltage, high−speed power switching inductive circuits where fall time is critical. It is particularly suited for 115 and 220 V switch−mode application.
The XL4005 is a 5A DC-DC Adjustable Step Down Module Power Supply Converter. This product is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module with high efficiency, low ripple and excellent line and load regulation.