Printed Circuit Board Manufacturers

An Overview of Common Electrical Components Used in PCB Assemblies

Oct 12, 2015

Printed Circuit Boards (PCBs) are composed of a wide range of electrical elements. The most decisive elements that are utilized in PCB assemblies are resistors, capacitors, diodes, and transistors. This blog is meant to familiarize you with these critical elements that contribute largely in the successful assembling of PCBs.

An Overview of the Four Vital PCB Components

Let us understand the role of resistors, capacitors, diodes, and transistors in a PCB.

  • ResistorsThese elements play a crucial role in regulating the current flow to a safe limit. Resistors perform a vital task of providing only the required biasing for the successful functioning of other elements like Integrated Circuits (ICs), and transistors. Several types of resistors are available to handle different amounts of electrical power.
  • Capacitors The role of capacitors in a PCB is to store energy as an electrostatic field for a long period of time. Capacitors are made of two conducting plates, separated by an insulating material. They are available in several models to handle different amounts of electrical pressure or voltage.
  • Diodes These components are responsible for transmitting current in one direction, whilst blocking current flow in the opposite direction. There are several types of diodes available that differ in structure, method of operation, and type of installation. The most commonly used types of diodes are:
    • Backward diode
    • Gunn diode
    • diode
    • Light emitting diode
    • PIN diode
    • PN Junction diode
  • TransistorsA transistor, which is a three terminal device, performs the crucial task of switching or amplifying electronic signals. Choosing the right transistor is of paramount importance as it determines the efficient functioning of the entire assembly. Generally, manufactures considers the application area, and total power dissipation, among many others, when choosing transistors to integrate in the PCBs.

Selection of these components demands close attention to details. Choosing the right type according to the design, application, and intended service period of the PCB holds great significance. An informed selection of these elements determines the durability, and efficient functioning of the final assembly.

Quick Contact


Creative Hi-Tech has been a long time partner with our Vertex project and has maintained a very good Quality & Delivery performance over the years here at Honeywell. In these turbulent times they have been a stablizing force in supporting our needs.”

- J.K. – Honeywell

Creative Hi-Tech is a great business partner. Creative is very responsive to any request and very flexible. They have helped us through several tough situations and we greatly appreciate their ability to get the job done.”

- Chad K. – LED Lighting Manufacturer

Creative Hi-Tech is easy to work with, very customer oriented, and always willing to push to make on time deliveries.”

- Michelle H – Telecom Manufacturer

Creative Hi-Tech has been a  long time partner with our  Vertex project and has maintained a very good  Quality & Delivery performance  over the years here at  Honeywell.  In these  turbulent  times, they have  been a  stabilising force  in  supporting  our  needs.”

- Richard S. – LED Lighting Manufacturer

Your Partner for PCB Assembly Services in Chicago and the rest of Illinois, USA GET A QUOTE

Creative Hi-Tech Ltd.

710 Cooper Ct. Schaumburg,
IL 60173

Phone: 224-653-4000
Fax: 224-653-4100