RFID Transponders, TagsA transistor is a type of semiconductor device that can be used to amplify a signal or switch electronic circuits on or off. The most common type of transistor is the metal-oxide-semiconductor field-effect transistor (MOSFET), which can be used in a variety of applications, including radio-frequency identification (RFID) systems. An RFID transponder or tag is a small electronic device that contains a unique identifier and can be attached to objects to track and manage them. RFID transponders and tags are a critical component of RFID systems, as they are the objects that are identified and tracked by the RFID system. RFID transponders and tags can be passive, meaning they do not have their own power source, or active, meaning they have a built-in power source and can transmit RF signals over longer distances. RFID transponders and tags are commonly used in applications such as inventory management, access control, and asset tracking.