Advantages of cost effectiveness | Low Cost PCB Prototype

A PCB Prototype is a tiny device as compared to the original circuit PCB assembly. It is employed in the circuit to connect its electronic parts. The prototype is also used for ensuring an even functioning of the circuit-employed electronic/electrical device.



A prototype uses electronic signals or pre-defined paths that are derived from the copper components. These copper components are laminated on an insulated material. By the moment the PCB gets complete, its every attribute is tested. Upon completion the electronic components of the device are attached to each other to form a Printed circuits board assembly (PCBA). These attachments are done with help of soldering. It is further tested in various conditions to check its durability and performance. To test, temporary connections are made to the PCB prototype.

A major shortcoming is that the servicing of this prototype is quite difficult.

A coating is done on the PCB prototypes. It is made of polyurethane or epoxy. The coating is done in order to prevent current leakages and shorts within the circuit that occur because of condensation.

Advantages of Low-cost PCB:

Printed circuits are the latest advancements in the electronic technology and so far these have turned out to be the best. It is prominent to generate cost effectiveness by using low cost PCB prototypes.

There are many companies in the PCB manufacturing field that have put quotations for low cost PCBs online. Out these ‘many companies’ some have been claiming their quotations to be the best in the market that too at prices. These prices eventually turn out to be advantageous for the buyers above others.

The various phases involved in the making of printed circuits including designing and manufacturing are done precisely and under the guidance of trained professionals. The details that the designers require are the Gerber files or Fab drawings. If there are any other requirements apart from Gerber files like board material, board’s thickness, solder mask, mask color, number of layers and number of layers than it is to be informed to the designers prior to the advent of designing. 

Crimp Circuits has proved to be the best option for good quality Printed circuit boards and low cost PCB prototypes. Being the best printed circuit board manufacturers in Canada they offer vast services in manufacturing printed circuits, express prototype, metal clad PCB, quick turn PCB and full turnkey services.

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Flex and Flex-rigid- the contemporary printed circuits

Consider yourself as one of the best manufacturers of printed circuits in Canada, and there is a need for you to launch a new electronic product in the market. The first difficulty to face; will that be the design of the product? No, the main challenge faced in the manufacturing process is the selection of the printed circuits that will actually give life to the product.

Choosing between a flex and flex-rigid PCB becomes a simpler ordeal with this article on Flex and flex-rigid PCBs. This article covers almost all the aspects of the PCB’s pros & cons, cost derivatives, efficient and tolerance. These two types of PCBs can be considered as the evolved form of the conventional rigid PCBs. They are made to fit into areas where the forces due to vibrations are high to the areas where a rigid one would be just fine. But, where both the types are required in complex circuits such as aerospace & automotive industries, the use of Flex-rigid PCBs has become prominent.


Flexible Printed Circuit Boards-

The main reason to term the PCBs as flexible is the flexibility in their design that can be shaped according to the requirement of the products design. In short, the flexible printed circuits are good enough to be molded into the shape of the product. The Designers of the product do not need to give an extra space or casing to the product or PCB respectively as they can fit these printed circuits into an existing product as well.

The flexible PCBs can give:

• Low weight addition to the existing product
• Portability: It can be easily attached and detached to the system (device)
• Durability: Flexible products are less likely to break while undergoing bending

There is no difficulty in removing the printed circuit from a particular system, change the circuitry and then can be put back into the device. It is that easy! Second best thing is its prominent usage in the automotive industry due to its durability in places with vibrations.

Advantages of using s flexible circuit board:

1. More Reliable than the conventional printed circuits as they have no mechanical connectors.
2. Temperature resistance is fine as it can withstand a few temperature undulations
3. Flexibility up to a great extent that makes these printed circuits pliable.
4. The main advantage of using a flexible PCB is that it can fit in most of the designs.
5. It is mostly efficient in conditions that are highly stressed or faster movement.

The only disadvantage with Flexible printed circuits is that they are expensive than the rigid or flex-rigid PCBs.

Flex-Rigid Printed Circuit Boards-

This type of printed circuits use both the type of Printed Circuits namely Rigid and Flexible sandwiched in form of multilayer Complex-PCB. The conductive layers are designed with an outline of flexible or rigid insulation to support the respective needs of the product. The outer layers on the board irrespective of them being in huge number are to be covered with safety covers or exposed pads. The primary rigid layer is the one that houses the conductors. Holes are used to connect the multiple layers of the Printed Circuit.

The projects that are associated with Mobile devices or some portable devices require the use of printed circuits that are flexible enough to be used at any place. Hence, this makes the Rigid PCBs limited to be used in the electronic industry where adjustment feature of the printed circuit comes into play and the Flexible PCB wins again.

Advantages of using a flex-rigid printed circuit:

1. Highly reliable: As the number of joints were less
2. Excellent resistance during temperature rise making it ideal to be used in industries such as furnace, automotive etc. Be a Formula1, all use the Flex-rigid Printed Circuit Boards.
3. Lower costs than the modern flexible Printed Circuits make it even easier to use than Flexible.
4. Can withstand high movements and stress but not as compared to the Flexible PCB.
5. Flexible than the traditional rigid circuit boards.
6. Durable enough, due to fewer connections and components.
7. Requires very low maintenance.

The Flexible PCBs can be used in many places, such as:-
Used in:

1. Automotive electronics
2. Computer Electronics
3. Medical science
4. Smart phones

Uses of Flex-Rigid printed circuits:

1. Mostly in Aerospace industry
2. Medical wearable
3. Industry

The Flex-rigid printed circuits are mostly used in the Aerospace field and rocket science where multi-layer PCBs are required to perform different attributes at the same time within a single component. Though the Flex-rigid PCBs are good as they are a combination of both flexible and Rigid PCBs, still places with minute space for circuits such as smart phones or electronic devices flexible PCBs are used to serve the design in a best possible way.

Why to choose from the Flexible and Flex-rigid PCBs?

With the latest advancements in the electronic industry, a need has raised to use flexible systems that are flexible in terms of shape as well as functionality. Though the above types can’t be used in most of the places, still these can be used in the below mentioned situations/places to obtain an efficient result.

• Mobile and moving devices require the use of any of these two printed circuits to offer efficiency
• Design is complicated enough and hence, the PCB needs to be flexible
• Corners, rough places (especially crowded with wires)
• Surface connections that are to be made with the various components of a device
• Low maintenance is required as the device can be on an external front
• The device or the board have to experience tough conditions involving the high rise in temperature within the device or the surroundings in which the device is working. 

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A Quick guide on the manufacturing of Printed circuits

“Printed circuits are the future of electronics.” This statement is considered to be a cliché by most of the tech critics as they believe technology is advancing day-by-day. But this advancement has to be in circuits. Why?

Well, circuits are the most essential part of any device. The ‘brain’ and ‘heart’ in a human vessel has never been changed not even by the creator nor by humans themselves. Similarly, the printed circuits (‘brain’ off a device) can be developed but not changed until the tech-geeks find another power source. Printed circuit boards are an invention that can be observed in almost all the electronic devices. Its basic function is to connect the components of the device and transmit electric power to them. It also provides an area for the surface-clamped wires.

Hence, we can say that like brain PCB tells blood (here electricity) its path, on which it sshoukd flow to reach the organs (here circuit components). It sends current via a set of connections consisting copper pathways around its body (circuit). Yet, to manufacture a PCB a designer has to visit the fabrication industry first and inquire about the requirements for the PCB’s manufacturing. This is the reason behind the outsourcing for manufacturing of PCBs as companies want minimal errors and maxed-up efficiency.

Below is a perfect guide to help the PCB designers to get over the errors and design an efficient printed circuit board.
Steps that will lead to designing of an efficient PCB:

STEP-1 Designing and output estimation

The primary thing in this designing section is the software on which the design has been made. It is recommended for the designers to inform the manufacturer about the version of the software so that it might not get complicated when the manufacturing starts. Various designing software for designing a PCB are: CAD, KiCad, Altium designer, Pads, Eagle and so on…

After the design has been approved for reaching the production stage, the designer must convert the file into a format that the designer supports. Here, Gerber can be used as it’s the most prominent product in the market. It is also known as IX274X.

Important information like drill drawing, component notations, copper tracking the layers, apertures etc, are encoded with the help of the Gerber. Hence, IX274X has been considered as the best output format. The software uses algorithms to counter check every aspect of the design and so, leaves no error. Here, another inspection is carried out by the designer that goes by the name of design for manufacturing as it tests all the tolerances that it should have before it undergoes the Manufacturing process.

STEP-2 When Files are replaced by Films!

The schematic files made by the designers are replaced by the ‘negatives’ (conventional photography films). These films are used by manufacturers when they print the circuit board’s design using a ‘plotter’- a laser printer. These designs on films are used to image the printed circuit on the copper board. The technology of a plotter makes it efficient enough to provide a properly detailed design, the way it was on the software.

A sheet with the negatives on it in black is obtained from the plotter. In this design, the inked part represents the copper parts of the printed circuits. The clear patches on the plastic sheet represent the non-conductive parts of the circuit board. The area other than the copper’s conductive part will be removed. The sheets are used for the circuit board’s surface and solder masks. Hence, for designing a two layer PCB, four sheets are required.

The sheets should stick along the circuit’s body in such a manner that it should not disobey the alignment pattern. However, to give the sheets a perfect alignment you must create the connection holes in a manner that they face each other accurately else the circuit’s alignment will be disintegrated.

STEP-3 Creation of the printed layers on the copper surface 

This is the initial stage of the creation of a PCB. The printed circuits are inscribed on a copper plate. It’s time to start the making of that copper plate actually. The board is made of substrate materials which are epoxy resin and glass fiber. The board is laminated in order to hold the copper over its surface. The substrates provide stiffness to the circuit board as well as make the board’s body a dust-resistance one. Copper is coated on both sides of the circuit board. To stop the circuit from being short or open it is decontaminated and cleaned so that no dust particle remains on the copper coated board.

It also consists of a layer that has photo chemicals over it. Now, that is what the photo films we created in the previous step require to settle on the copper board. The copper-coated board and the photo film are sandwiched on both sides. The sandwich undergoes an interaction with the UV light. The UV light here, hardens the photo film on the copper layer making them one. The ink markings from plotters prevent the UV rays from reaching the circuits structure areas.

The alkaline solution and a pressure wash are used to clean the board after which it’s left to dry.
This step is used while manufacturing PCBs with more than two layers. In simple PCB manufacturing process, after the second step the manufacturer switches directly to the drilling part.

In manufacturing of multiple-layer PCBs some steps are executed before drilling:

• Copper removal
• Layer alignment
• Optical inspection
• Layer bonding

STEP-4 Drilling of the circuit holes!

A computer-controlled drill is used to create holes in the printed circuit board. The speed of the drill is approximately 150,000 rpm, well, at this speed a hole is drilled within a second. But, an average PCB consists of a hundred holes to drill thus, it takes time to drill them with precision even for a machine for it has to follow a certain path to drill all those holes.

STEP-5 Copper deposition and plating

This step is also the one that is used while creating a multi-layer PCB. This step involves the diffusion of different copper plated layers using chemical deposition.

STEP-6 Layer Imaging

After the drilling and plating the most important step in the manufacturing process comes. The photo film is deposited again. Now it contains the PCB’s design on it. This process is performed in sterile environment in order to make the PCB board perfect.

STEP-7 Plating

This step involves a repetition of the step before the previous step. Hence, it is also useful while manufacturing a multi-layer PCB.

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Printed Circuits| the latest advancement in electronics

A ‘Brain’ has an important role to play in the functioning of human body. Exactly like a Brain the printed circuits are probably the most important part in an electronic device. It provides support to the system by sending electricity to various parts of the device. Secondly, it acts as a shed to the wires that are mounted on the surface. It also takes care of the components that are connected to the socket.

Material and Layers:

They are commonly casted out of epoxy (composite form), fiberglass or any other composite material. Generally printed circuit boards are comprised of single layer for simple electronic devices. However, the complex hardware like motherboards or graphic cards is composed of multiple layers that may cross over 10 layers in some cases.

Application:

As we all might think that printed circuits are so complicated and can be used in computers and hi-tech electronics only. Well this is not entirely true. Is it used in computers? Yes, but it is also used in simple electronic devices ranging from small toys to radios and cameras. It is used mostly in digital electronics but is also used in other fields such as automotive sector, medical field etc. PCBs are of many types and hence, these ‘many types’ are used in different fields such as-

• Automotive-science and space-science: As we all know the nature of the work that is being done in these two industries. We can easily reach at a conclusion which is, the use of complex PCBs. Not only complex but the printed circuit board should be flexible also. Flexibility of the PCB makes it durable during extreme conditions and places as well. For example, in an automotive vehicle as well as rocket there are places where circuits are involved but these places vibrate as well. So, in those cases the flexible PCB always turns out to be the best.

• Industrial application: Printed circuits are usually used in big plants that require hi-tech electronic activity while they function. Instead of thin copper PCB thick ones are used. These circuit boards are required for battery charges that flow high volumes of current, motor controllers and load testers.

• Lights: The LEDs that are used nowadays due to their low power consumption and high efficiency. The aluminum based Printed circuit boards are used to make such LEDs. The feature of this Al based PCB is that it validates heat transfer at high levels as compared to standard PCB. These PCBs can be used both high and simple luminous solutions.

• Medical science: To test new technologies in medical science we require efficient devices. The use of electronic devices that are complex and consume low amounts of power has made it easier to experiment. PCBs can be found in devices that are small to the devices that are complex such as they are present in pacemakers as well as in complex devices like CT- SCAN Machinery.

The Printed circuits boards are of several types based on the particular way in which they were manufactured. The most common classification of PCB is:

Based on the layers:

• Single layer PCBs
• Double layer PCBs
• Multi-layer PCBs

Based on rigidity:

• Rigid PCBs
• Flexible PCBs
• Flex-rigid PCBs

Based on the amount of transmission (current and signals):

• High Frequency PCBs
• Aluminum-Backed PCBs

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Printed Circuits- A Boon For Electronic System And Industry

 Printed circuit boards are the ones that act as a foundation for most of the appliances or devices based on electrical or electronic engineering. It not only supports the entire system but also is a wiring area for the wires on the surface along with the components connected to socket. These are mostly made of Fibreglass, epoxy or other compound materials.

Though PCBs are mostly associated with the computers still they are present in electronic and electrical devices like Radios, digital cameras, TVs and cell phones. Apart from the use of PCBs in electronics and electrical field, these boards are used in various fields such as Medical devices, Automotive industries, Industrial machinery and many more.

As we all are aware of the major part that the electronic and electrical industries play in our contemporary lives, we have somehow become dependent on these for our comforts. This dependency makes these circuit boards ‘omnipresent’ and hence, they are also the major contributors in the easy and comfortable lives that we live. These circuit boards come in wide array of designs that make it almost vulnerable to nothing. These circuit boards, hence, serve entirely different functions when used in different devices.

As a recent survey revealed, PCBs in Canada have taken over most of the major fields related to science, technology, development and many more. Still printed circuits are being adopted by any new Industry of the market. This proves the promising technical development that these printed circuits carry are just the beginning. Printed circuits usually connect internal components of any machinery through a series of different circuits related to it in terms of functioning.

These printed circuits are easily recognizable as these chips are of green color and are present at the center of any electronic. The flexibility of printed circuits due to their versatile designs and work-purposes allows them to function at varied capacities and places.

Some of the applications of the Printed Circuits (PCBs) are listed below:

1. General Electronic/Electrical Devices – It can also be termed as consumer electronics. It is inclusive of the devices that are used in our day-to-day lives like computers and smart-phones. Nowadays even the refrigerators are comprised of these circuits in order to function precisely.

As there is a rise in the demand of these general electronic/electrical devices, there has been a significant increase in the pcb assembly and pcb manufacturing. The pricing here is always in-budget as these printed circuits are ordered in bulk and hence, the cost of the final product is usually low.

The various electronic devices in which these printed circuits are used are as follows:

• Mobile devices- An integral part of the modern day human routine. It acts as everything ranging in-between, a medium to talk to close ones to finding your way, the moment you get lost somewhere.

• Computers- The printed circuits are present at the heart of the computer systems and laptops. These circuit boards are also present in the programmed devices that are associated with the computer features or uses.

• Recorders- Digital cameras and DSLR cameras nowadays, are equipped with printed circuits to function.
• Home Appliances- The printed circuit are present in most of the electronic/electrical appliances for example, Digital clocks, refrigerators, microwaves, coffee makers and many more.

• Entertainment Systems- Your entire entertainment system that ranges from video players to home theatres, every device is equipped with Printed circuits.

2. Automotive Industry- The Modern era marks the advent of highly developed automotive sector. The present generation cars come equipped with electronic control unit (ECUs) that provides an accurate and immediate response to the driver’s demands.

This electronic system is employed in the car to provide a single handed control over all the equipments in an automobile which were to be operated manually earlier. As PCBs work with optimally high-frequency signals with the likes of radiofrequencies, MM waves or microwave, they can be used to employ sensors at various parts in an automobile. The sensors are present in cruise control, safety features, avoiding accidents, inflating the airbags.

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Aspects to find the competent amongst all PCB manufacturers

PCBs (Printed Circuit Boards) are common in every market these days ranging from computer manufacturers to HVAC manufacturers. The use of PCBs has enhanced the market grasp of companies as it is available at lower costs and has provided flexibility to designers by providing them with increased circuit density. Use of PCB has provided us with a glimpse of advanced technology wherein more information can be encrypted on the board making it more advanced than before.
Selecting a PCB manufacturer is a trial by fire as it requires a lot of research and knowledge to select the best in the market. Hence, here are some easy to comprehend guidelines for you that might turn out to be helpful in your pursuit of best PCB manufacturer.




1. Requirement: You have to be decisive about your requisitions as some manufacturers fail to produce circuit boards in large production slots and some might produce different slots based upon average tolerances and specifications. Hence, it is necessary to look for a manufacturer who is capable of fulfilling the set of requirements for your desired board.

2. Clientele: Before choosing a manufacturer you should positively check the client list of the company. This will give you an idea of the types of requirements that the maker has fulfilled in the past as electronics manufacturing field has various clients ranging from cellular companies to automotive manufacturing companies. The type of work that the company gets involved in determines the stature of its Brand status. This step falls useless in case of reputed companies as they have become best by doing the best. So, no questions in case of reputed companies!

3. Background: Checking companies’ backgrounds simply means- How long have they been in this business for? You have to check the experience of the manufacturer in the respective field for it’s the only facet in this list that can’t be compromised. Experience is all that matters in electronics industry as it is referred to as the initial step for any industry to develop and innovate. The longer the company has been manufacturing the longer will be the clientele.

4. Quality: ‘Quality matters!’ seems a platitude but still for this industry quality lies in the ‘no compromise’ zone. The quality of the circuit determines the working of the machinery into which the board is implanted, low quality may hamper your product as it may crash upon exceeding the tolerance limit. Hence, you have to choose a manufacturer who guarantees it previously.

5. Certification: There are different certifications that may be given to the PCBs by the governing authorities for different resistances such as fire, water, dust etc.

6. Delivery Time: You have to select the PCB manufacturer based upon the time in which they are delivering the board. If the span doesn’t suit your schedule you might have to shift preferences to another manufacturer.

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How to avoid delays in your Printed Circuit Board Fabrication

In today’s world, one of the most crucial elements of any electrical or electronic goods is a Printed Circuit Board or the PCB. So, for your project’s success, the timely fabrication of your Printed Circuit Boards can be a deciding factor. The printed circuit board manufacturers play a lead role and the advanced techniques and technology available with them can save both money and time for you.  Any delays in the fabrication of your Printed Circuit Boards can lead to additional costs and further delay to the project. Let’s have a look at various factors which you should keep in consideration to ensure timely deliverables and on-schedule fabrication of your Printed Circuit Board: 


       
Match the Expectations with Competence- It is important to determine whether the PCB manufacturer or the PCB manufacturing industry, has the required technology or production capacity to undertake the project. For instance, a Printed circuit board with say 10 layers will require higher competence and will be more challenging than a 2 or 3 layer circuit board. Quality of service, Feedback, Speed, Price, Support and Innovation are few factors to keep in mind while you shortlist the manufacturer for your project.

Choosing the Manufacture- Fabrication of Printed Circuit Board is a convoluted process that requires higher level of competence and skill. So, choosing the appropriate manufacturer is really crucial who meet the quality levels. Also, in order to avoid inconvenience, it is better to consider a local or domestic manufacturer as the shipping charges would be higher for overseas manufacturer and the communication delays will be common then.

Appropriate Documentation- A correct documentation of your product and requirements is of paramount importance in the PCB fabrication process. So, keep the said document ready and up to date at all stages of manufacturing in order to eliminate any chances of delay or fault.

Recognition of the Long Lead Time Parts- Printed Circuit Board Manufacturing is a complex process and some parts which are crucial for the project may take a long time in order to get manufactured say up to six months. Therefore, it is important to work closely with your manufacturer so that you can co-ordinate with them regarding obtaining the adequate parts and that too quickly.

Follow Up- Follow up or Communication is a very crucial factor for the success of any project. A timely follow-up with your manufacturer along with constant communication via emails or calls will make sure that the fabrication process is being undertaken smoothly and the chances of on-time delivery of the PCBs get increased manifold. Seamless communication will prompt you for any interruption or obstruction in the PCB manufacturing and timely guidance on your part can prevent unnecessary delays.