Electronic components (electronic component), is a basic element of electronic circuits, usually individual packages, and lead or metal with two or more contacts. Electronic components to be interconnected to form an electronic circuit with a particular function, such as: amplifier, radio receiver, or oscillator, the connection
Component one of the most common ways is soldered to the printed circuit board. Electronic components may be a separate package (resistors, capacitors, transistors, diodes, etc), or a variety of different complexity groups, such as integrated circuits (operational amplifier, resistor, logic gates, and so on).
In order to maintain the stability of operation of electronics, they are usually fine resin (Resin dispensing) coated packaging to improve insulation and protection against environmental impacts. Components may be passive or active (passive or active): passive components (Passive components) is an electronic component, when used without any gain or directionality. Network analysis (network analysis), they are called power components (electrical elements). Active components (Active components) is an electronic component, as opposed to passive components not in use they have gain or directionality. They include semiconductor devices and vacuum tubes. [Edit] terminals and connectors for the electrical connection of the device terminals (Terminal) electrical connector (Connector) signaling socket (Socket) terminal block (Screw Terminal, Terminal Blocks) signal connector (Header) (en:Closed)  wire connector or Terminal at the end of the wires and power cables (Power cord) cords (en:Patch Cord) oscilloscope probe (Test lead) switch can control circuit open circuit or closed circuit electronic switches (Switch)-manually operated switch Keypad-a collection of push button switch (for example, enter only numeric keypad) relay (Relay)-current operated switch. It is a kind of electromagnetic components, as opposed to solid state relays (Solid State Relay). Magnetic switches (Contactor) thermostat (Thermostat)-temperature actuated switch breaker (Circuit Breaker)-overcurrent actuated switch limit switches (Limit switch)-mechanical switch mercury switch (Mercury switch), the centrifugal switch (Centrifugal switch)  resistor resistor-type electronic components see below the "sensor" resistance in the paragraph, See below for environmental detection of "protection" resistance in a paragraph to limit current or voltage resistors (Resistor)-fixed value resistor network (Resistor network) Trimmer-small variable resistor-variable resistance variable resistance heaters-heating element (en:heating element) on the hotline (en:Resistance wire)-line of high resistance materials, Similar to heating element Thermistors (Thermistor) resistance-temperature pressure sensitive resistor (Varistor)-pressure resistance  protection in high voltage or current protection circuit of passive components these components technically belong to the wire, resistor, or vacuum tube, but listed below according to their use. Active components, belonging to the execution protection feature in the semiconductor class, as follows. FUSE (Fuse)-over-current protection, can only be used once. Resettable fuse (PolySwitch, self-resetting fuse)-over-current protection, can be repeated after reset using metal oxide varistor, surge absorber (MOV)-over-voltage protection, these are passive components like TVS inrush current limiters (Inrush current limiter)-avoid inrush current (Inrush current) damage caused by gas discharge tube (Gas Discharge Tube) circuit breaker (Circuit Breaker)-overcurrent actuated switch product of thermal power station (Thermal Realy)-overcurrent actuated Switch incandescent earth leakage protection receptacle (GFCI) or RCD charge capacitor in electric storage component. Capacitors in circuits used for filtering.