What manufacturing methods do PCB manufacturing companies follow?

Electronic industry is not simple. This is because wide number of add-ons and alterations are carried out in it that makes things complicated. Especially, when it comes to making of PCB board, quite a number of things are needed to be taken into consideration.

From this document, you would get a complete guide over modes of manufacturing that are used to make PCB board.

Commonly, there are two techniques for the making of PCB: point to point and surface mount assembly.

Point to point method: This is the oldest form of manufacturing method. In this, soldering of electronic circuits is done by non-automated form. Tin and lead alloys are preferred because point to point assembly is very well carried out only by these alloys. However, using these alloys is relatively more expensive and time consuming, but there were no other options in traditional times that could efficiently help perform the manufacturing process.

Surface mount assembly: This is completely a new form of PCB manufacturing process. Relatively to point to point method, it is much more reliable, cost effective, trusted process for printing circuit boards. Where in point to point tin and lead was used to attach the wires on PCB, in this process solder balls, flat contacts and short pins are used for the same purpose. Moreover, unlike to point to point method, it does not require drilling holes through the circuit boards.

Therefore, if you are looking for reliable and cost effective solutions, surface mount technique is the best option. Another benefit of SMT is that it is versatile because this process is used in making of number of applications such as laptops, mobiles and a host of other gadgets.

However, while looking for PCB manufacturing companies, make sure they follow SMT method, along with that consider the fact of usability and affordability, as well, because such things should also suit your pocket.

Countless options are there in the industry that can be trusted for the manufacturing of most well suited printed circuit boards. But choosing one manufacturer from hoard of suppliers is a tedious task. Along with this, you even need to ensure that the supplier is not a counterfeit or a cheater. Thus, on the whole, you need to do a thorough research and then make a wise decision of choosing a manufacturer.

While searching, consider factors like reputation, certified, trusted, integrity, credibility etc. This will help you ensure that you have contacted the right person to cater your needs and requirements.

Besides factors that are to be looked in a manufacturer, you also need to assure the quality of product, price, and functioning of the product etc. This will help ensure you that the machinery is working properly.

There are numerous PCB manufacturing companies in market that are known for manufacturing printed circuit boards. So, choose a one that you find impressive.

How to perform Infrared inspection on PCBs?

Printed Circuit Boards are the rigid structures that have geometrical patterns etched on their surface. These patterns are made of copper or conductive material and replace the use of electrical wiring in electronics. Printing the circuits is less expensive than fitting wires and soldering them.

On the other hand, multi-layer boards with wiring make systems highly complex. If a defect occurs in an inner layer of the multilayer board, then all the other layers above that layer need to remove to reach that layer. This generates the need of proper inspection before lamination.

Among the various types of inspection techniques, infrared inspection uses heat and requires the use of current. The purpose of inspection is to find defects in printed circuit boards which if not corrected timely could lead to electrical failure.
Defects in the PCBs can result variations in temperatures. Inadequate or improper soldering at joint can cause electrical resistance. As a result, the temperature of the PCB increases and can be detected with the help of infrared camera.

The idea behind printed circuit board inspection with known standards is based upon the fact that heat emitted in the part of the PCB that is inspected is predictable. This idea behind inspection can be affected by the elements and methods used for printed circuit board fabrication. The substrate contains numerous electrical components, such as semiconductors, that generate heat of varying temperatures.

The idea of image subtraction involves the use of software that forms a perfect thermal profile which can be compared to the actual inspection results or even subtracted from them.  The outline can be loaded into the inspection camera or it can be used from computer system.

One main thing in various types of inspection is presence of current to facilitate necessary heat generation requirements. There are mainly two types of infrared inspections, active and passive.

In active infrared inspection of printed circuit board, the device is given energy as it would be serve the actual purpose and heat produced by different electrical units is measured. On the other hand, passive infrared inspection on printed circuit board involves the current directed on the tracks in the PCB to a heat sink.

Before conducting the printed circuit board infrared inspection, the professional inspectors properly examines the job and makes selection for the best inspection tools. During selection of equipment, the inspector considers various factors like color options, field of view, and limitation associated with the physical structure of the equipment. Each inspection techniques have its own set of issues and the selection of equipment plays major role. The selection of right equipment avoids re-testing.

The printed circuit board inspection enables defects to be detected before they become a major cause of failure.