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PCB Prototype and Assembly

Printed Wiring Board-An Attractive Fundamental Introducing

by @sunshine - Mar 20, 2018

The printed wiring board (PWB) also known as Printed Circuit Board (PCB) is the essential part of every electronic device. The printed wiring board was introduced in early 1950’s,which was the building block for the electronic packaging.The important feature of the printed wiring boards is to get maximum components count per square inch of PWB. This is known as component density. Hence many advanced packaging techniques were introduced like Ball Grid Array (BGA), Chip Scale Packaging (CSP) and Chip on Board (CoB).


1.The main factors affecting the performance of PWBs

 1.1 Speed of operation of the printed wiring board

 1.2 Power Consumption

 1.3 Thermal Management

The surface mount components are miniature size and are extensively used in many PWBs to provide maximum component density while maintaining electrical, thermal and signal integrity performance of the device.There is variety of materials used for PCB substrate, the most common is FR4.The below shown fig

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How to Remove Solder

by @sunshine - Mar 19, 2018 - Remove Solder

The components are adhere on the printed circuit boards through the use of soldering wire and soldering iron. However, some times the soldering is not properly done or the components are adhere at wrong place. At the time you are required to un-solder the component instantly to make the circuit working properly.

Techniques of Un-soldering Components

There are numerous techniques to un-solder components from the printed circuit boards. Some techniques are famous and are easy to be adopted while some techniques are very professional and costly. The most common technique is to un-solder the wrongly placed components through a sucker or de-soldering pump.

What is De-Soldering Pump?

A de-soldering pump is a machine which is used for removing the wrongly placed components from the printed circuit boards. The pump is working on the principle of high pressure vacuum.

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Making Custom Printed Circuit Boards

As a starter, it is okay to have your custom printed circuit board in a breadboard because they work just fine. As you perform more experiments, you quickly realize that you need to put together the already working circuits more permanently in what can be called a custom PCB. The quickest method to do this is to use a perfboard; which is a ready make custom PCB with lots of holes on the board that you can simply solder your custom PCB components permanently together to make the same circuit as was in the breadboard but this time, a permanent circuit. The disadvantage of laying out your circuit on a perfboard is that it can be confusing to follow up with the traces and the connecting jumpers. Still at the end of the day, the circuit looks ugly and unprofessional.


Custom Printed Circuit Boards.png


You realize that you learn a lot as you move from breadboard to perfboard. The next stage that is interesting is making the custom PCBs through the etching method. This method produces a more professional looking custo

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Define Impedance

by @sunshine - Mar 07, 2018

In the printed circuit boards, all wires and traces are already having an impedance against the flow of the current. This is because the traces and wires are made of copper and copper is the element having lowest resistivity. The traces and wires of copper are almost perfect conductors and their DC resistance is also low.

The Nature of Impedance

 To define impedance an argument can be developed with the case that the traces and wires of copper are having potentially significant in having the impedance. This logic can be elaborated as follows.

  1.Each of the traces of the copper are having series impedance and is also distributed along the traces and is also inversely related to the cross sectional area of the traces. However, it is admittedly very small but is not zero.

  2.Each of the traces is also having certain capacitance amid the trace itself and the path which is returning the signal to the traces, and is not dependent on the trace of the path. This is because of its distri

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by @sunshine - Feb 05, 2018 - Scheme-It pcb

Scheme-It is an online schematic and diagramming tool that allows anyone to design and share electronic circuit diagrams. The tool includes a comprehensive electronic symbol library and an integrated Digi-Key component catalog that allows for a wide range of circuit designs. Additionally, a built-in bill of materials manager is provided to keep track of parts used in a design. Once a schematic drawing is complete, users can export it to an image file or share it via email with others. Scheme-it works natively in all major web browsers without requiring the use of any plugins. Only registered users are able to share and save designs.




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PCB Prototype Service

by @sunshine - Dec 19, 2017

One of our customers,named John, a manager comes from a computer company in Australia,had said that,i found a right PCB Prototype Service company finally. He has browsed a lot PCB companies’ website such as protopcb,pcbcart,and wellpcb,which were recommended by members of dorkbot.but at last,he decided us,but the most important thing they took into consideration was our free online service.

He recalls, i was already 66 years old, i have experienced lots of companies and manufacturers,so many questions about their PCB prototype products and sales-service to ask and inspect them,but they were very professional and full of patients to answer me.Before that in my thought,Chinese people often use low cost and bad quality products to cheat or mislead http://foreigners.So at first, for a two or four layer board with 8/8 design or greater I would not pay for testing. But now they have changed my mind of the Chinese products.They can also provide relatively cheap price with excellent quality,a

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Eagle Software

Eagle software is an ultimate tool that is being used all across the globe for designing printed circuit boards. There are numerous practical uses of mouse and keyboard in the design of printed circuit boards. The mouse can be used more than just a pointer in the printed circuit board designing through the Eagle software. The following are the best ways to use mouse.

Original Source:


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Solder Mask Colors

When you are about to select the different parameters for the printed circuit boards, one of the best option is to think of the solder mask colors. The solder masks are available in different colors from which you can choose and make your printed circuit board. The following are the major solder mask colors which are widely adopted for the printed circuit board designs. 


The green color is the most used color as solder mask in the printed circuit boards. The color of such printed circuit boards is usually bod green and is having white silkscreen. Practically green is the best color for the design of the printed circuit boards and is suited well. The white silkscreen is also in good contrast with the green color.

Solder Mask Colors1_0.png

To be continued:




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standard pcb thickness

by @sunshine - Dec 04, 2017 - Standard PCB thickness

The standard PCB thickness refers to the assembly of single or additional cores which are connected using sheets of cured epoxy. The options that are offered to customers may range from 0.008 inches to 0.240 inches. Multiple laminate options ensure that the right impedance of the PCB. Notice that the board’s finish determines the thickness of the PCB and that each finish is different and comes with its advantages.

When choosing the thickness of your PCB, the use to which it should be put to should guide you. It is important that you coordinate with your manufacturer if you need specific thickness that meet your needs. Notice that the price of the PCB is determined by the thickness. The price for standard PCB thickness differs from that for non-standard.  

 To be continued

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PCB Artist

by @sunshine - Dec 01, 2017 - PCB Artist Design

The PCB artist is an electronic design system which is based on an integrated environment that is providing the necessary tools for a schematic capturing of design. In other words, it is a board of epoxy that is made up of copper sheets which are used to carry out electrical connections through fixed routes.

PCB Artist for Design Capturing.png

It produces professionally manufactured data. This software can directly send the manufacturing data to the PCB supplier. This data will then enable you to create the last physical printed circuit board.

The PCB artist is free software which will allow you to produce schematics and PCBs. It strictly intuitive and enables simple modifications and editing. It offers a component updated library which inhabits so many significant components. Whenever you want to make use of your PCB artist, you will be able to open the type of number and combinations of different design with any library item at the same time.  

PCB Artist for Design Capturing1.png

The PCB artist is capable of allowing you to program your keyboard i

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