Electronic Components & Devices

Glossary of electronic components



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A

AC voltage characteristics

Change of capacitance against the AC voltage.

Aging

The decrease of capacitance over time.


B

Bypass, Decoupling

To filter out high frequency noise and to decouple one part of an electrical circuit from another.



C

Capacitance

Index of the ability of how much potential energy can be stored. Unit is "F".

Capacitor

1. Stores DC power, enabling charge and discharge.
2. An electronic component which passes the AC (signal and/or high-frequency noise) through and prevents DC.
Capacitor

Coupling

To eliminate the DC voltage and only pass AC signals through.


D

DC bias characteristic

Change of capacitance against the DC voltage.

Dielectric constant

The measurement of the ability of a dielectric to store potential energy in external electric fields.

Dielectric tangent

Index of energy loss caused due to the resistivity of dielectric and electrode material.

Dielectrics

Substance that can be polarized in external electric fields and stores DC power.


E

EMC

Abbreviation of Electromagnetic Compatibility. The concept of enabling electronic devices to function without EMI.

EMI

Abbreviation of Electromagnetic Interference. A disturbance of an electrical circuit caused by external interference of an electromagnetic origin.

EMS

Abbreviation of Electromagnetic Susceptibility. The vulnerability of an electric circuit to a disturbance of electromagnetic origin.

ESL

Abbreviation of Equivalent Series Inductance. One of the resistive components in an AC circuit. ESL describes the inductive portion of the impedance of electronic components.

ESR

Abbreviation of Equivalent Series Resistance. One of the resistant components in an AC circuit. ESR depends on dielectric loss caused by the dielectric material and resistivity of the electrode material.


I

Insulation resistance

The extent to which a dielectric material resists leakage current measured under DC voltage.


P

Polarization

The charge orientation in dielectrics. Dielectric crystals contain positive and negative sides due to the structure in external electric fields.


R

Reflow Soldering

A soldering method in which solder is applied to electronic components and then melted in a reflow oven to permanently mount them to a printed circuit board (PCB).


S

SMD

Abbreviation of Surface Mount Device. Components suitable for SMT equipment.

Smoothing

To suppress the ripple and smooth the voltage fluctuation.

SMT

Abbreviation of Surface Mount Technology. A method of producing electronic circuits on a printed circuit board (PCB) by applying solder paste and placing components on the PCB's surface before the solder is melted in a reflow oven.

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