Rogers PCB Vs FR4 PCB – What is the Difference?

By | Date posted: | Last updated: September 13, 2021


In the world of hi-tech gadgets, medical equipment, and Industrial Machines, the performance of any product depends mainly on the quality of its PCB design.

Though there are multiple aspects to be considered while designing a PCB, our focus here is to identify the right PCB material which is also known as Substrate. Substrates are the di-electric sheets that hold the components and traces of a design. Selecting the right substrate material for a specific application is the key aspect of PCB design. To decide which substrate works best for any given application, we need to know the salient features of all the materials available on the market. The materials offered include FR1 to FR6, CEM1 to CEM5, insulated metal substrates, Polytetrafluorethylene (PTFE), polyimide, etc. Among all these, FR4 is considered the most commonly used substrate by many PCB manufacturers.

What makes ‘FR4 PCBs’ a commonly used type?

FR4 PCBs (Printed Circuit Boards) are widely used, low-cost PCBs categorized as ‘Best Performers’ in most environmental conditions. As per the NEMA standard, FR4 signifies the Fire-Retardant characteristic of the composite material. They are made from woven fiberglass cloth reinforced with epoxy resin. FR4 material is the most cost-effective type available for circuit board fabrication. They are lightweight, moisture-resistant, and have high dielectric strength.FR4 PCBs are an appropriate choice for through-hole technology in component mounting. Thus, they are extensively used in most manufacturing techniques and provide high yield.

Then why Rogers PCBs are required?

Roger PCBs are manufactured by Rogers Corporation and are mainly used in high-frequency and high-speed designs. Their excellent dielectric constant and ability to sustain elevated temperatures make them the Best Quality PCBs for RF products and microwave devices. They are available in several types based on required board resistance and high dielectric constant. Roger PCBs are good in thermal management and hence maintain the consistency of the product. Also, they have low outgassing, a vital feature necessary in the space and aeronautics industry.

So, let’s understand the Differences between Rogers PCBs and FR4 PCBs:

Cost is the first and foremost difference to be considered in this section. The ultimate goal of any PCB manufacturer is to bring out a cost-effective circuit board with the best performance. FR4 PCBs are the most affordable ones in the market. This is valid if your design is for optimal conditions with low-frequency and nominal temperature settings. If your application demands high speed or extreme temperature operations, then you may have to overlook the cost and go for expensive Rogers PCBs.

Impedance Stability is the next difference between FR4 and Rogers PCBs. The dielectric constant of the substrate is one significant factor that defines the Board Impedance and its stability. The higher the dielectric constant, the higher is the Impedance stability. Though FR4 is the cheapest substate available, its maximum di-electric value is 4.5. Whereas Roger PCBs has a higher and wider range of di-electric value like 6.5 to 11. This feature makes Rogers PCBs the best choice in high-thermal applications where the stable impedance is crucial.

Thermal Management is in continuation with the previous difference we have discussed. In high-speed applications, there will be significant heat generation in the PCB, and it must be handled diligently with a good thermal management system. In such scenarios, a thermostat-based laminate present in Rogers PCB is the best choice. FR4 PCBs cannot handle high temperatures and thus fail in such applications.

Dissipation Factor indicates the signal loss in the PCB which is much lower in Rogers PCB as compared to FR4 PCBs. The dissipation factor of FR4 PCBs is 0.02% as compared to 0.004% in Rogers PCB. So, Rogers PCB provides reliable results with minimal electrical signal loss against FR4 PCBs.

Moisture Absorption is directly related to the electrical and thermal characteristics of the substrate material. This in turn affects the performance of the circuit board. Rogers PCB has the least moisture absorption and thus provides the best efficiency in varying environmental conditions.

Applications and Performances Based on the overall performance, FR4 PCBs are considered as Decent players whereas Rogers PCBs are remarkable performers. Hence FR4 PCBs are best fit in the optimal environment with low to mid-frequency applications. They are robust and deliver excellent balance in electrical stability and are easily manufacturable in almost all existing processes in the PCB industry. Whereas Roger PCBs are meant for high-grade performances in niche domains like space applications. The temperature constancy and low outgassing feature make them the best choice for critical applications like space and aerodynamics.

Let’s conclude

Diverse applications in the electronic industry come with a demand for varied types of PCB requirements. Based on the usage and performance, it is necessary to make the right choice of PCB material that can bring out the best product to your customer. So, is it FR4 PCB or Rogers PCB?
The end application is the best selection criteria.

At Technotronix, we combine state-of-the-art technology with our advanced engineering to offer you Rogers printed circuit boards & FR4 Printed Circuit Boards of the highest quality. With over four decades of experience in delivering high quality, on-time, price-competitive products, you can rely on us for your PCB requirements.

To get more insights into the PCB fabrication and PCB assembly services, please explore our PCB fabrication services. Also, you can drop an email to or give us a call at 714/630-9200 to solve your queries or to get a quote.

Single-Layer vs Multilayer Printed Circuit Boards: Who Wins the Ultimate Battle?

By | Date posted: | Last updated: August 12, 2021
Multilayer Printed Circuit Boards

When it comes to choosing the right PCB for your project the one question that you need to deal with at the outset includes whether to go for a single-layer or multilayer printed circuit boards. How do you decide whether your project require single-layer or multilayer printed circuit boards? To be able to answer this question, it is important to get into a detailed understanding of both.

Single-layer or single sided PCBs

A single-sided board, as its name suggests has the components on one side of the board and the conductor pattern on the other. Typically, such boards are used for simpler devices.

Single-Layer PCB Advantages

The many advantages that single-layer printed circuit boards offer, include:

  • Low Cost
    The simpler nature of these boards translates into the fact that they need fewer resources, less time as also lesser expertise to design as well as fabricate the boards. All of this translates into low costs of single-sided boards rendering your project, efficient.
  • Easy to design and produce
    Because of their simplicity, it is easy to design these boards as also for manufacturers to produce them without any issues. Additionally, it is easy for manufacturers to cater to high volumes. In fact, with rising quantities, the price of the board will be even lower, making the boards even more efficient.
  • Quick turnaround times
    Once again the simplicity of the boards lend themselves to quick turnaround times even at high volumes. This can prove to be a significant source of competitive advantage as your go-to-market plan can be expedited.

Despite the many advantages that they offer, single-layer PCBs also run into several limitations, important among them being:

  • Limitations of design
    While the simplicity of their design is an advantage in several terms, it can also turn out to be their limitation. For complex devices where there are many components, the space offered by a single-layer printed circuit board does not prove to be enough.
  • Power and Speed
    With limited number of connections, the power and speed of the board is significantly impacted. This makes single-sided PCBs not too usable when it comes to complex devices where power and speed is of essence.

Single-Layer PCB Applications

Because of their low cost and ease of production, single-layer PCBs find a place in several devices were storing of a large amount of data is not a prerequisite. Some of the devices where single-layer PCBs find wide-spread application include:

  • Radios
  • Printers
  • LED lights
  • Calculators
  • Coffee makers
  • Sensors, and more

Multilayer Printed Circuit Boards

Multilayer PCBs are made up of three or more double-sided boards stacked together. With multiple conductors patterns the area available for wiring significantly increases. Typically, an even number of layers are preferred as odd number of layers can lead to issues such as warping and twisting once the soldering process is done.

Multilayer PCB Advantages

The many advantages that multilayer PCBs offer, include:

  • Useful for complex designs
    Complex devices that have a high number of components and circuits benefit from the use of multilayer PCB. Devices with several uses as well as advanced capabilities need this kind of complexity. With the miniaturization of devices becoming a growing trend, the use cases of multilayered PCBs are only rising. Many of the multilayered boards also come with features such as impedance control and electromagnetic interference shielding, further improving the quality of the board and of the device.
  • High on Power
    Because of their high circuit density, the boards are also more powerful. What this means is that they offer high operating capacity as well as speed, making them especially useful for advanced devices.
  • Highly Durable
    With an increased number of layers, the thicker board is also more durable. It is far more capable, therefore, of withstanding harsher conditions.
  • Size
    Small size and lightweight are added features of a multilayer board. This makes them ideal for the miniaturization of devices.
  • Single connection point
    The fact that they work with a single connection point is an added advantage in terms of simplicity of design and weight.

Limitations of Multilayer PCBs

Despite the many advantages that multilayer boards offer, the limitations that they present include:

  • Increased manufacturing costs
    As opposed to single-layer PCBs they come with a higher manufacturing cost.
  • Potentially longer manufacturing time
    Because of the complexity of design and high component density, typically they come with a longer Manufacturing time.
  • More complex repairs
    In terms of repairs too, the process is more complex as well as time consuming.

Common applications of Multilayer PCBs include:

  • Computer components
  • Mobile phones
  • GPS devices
  • Heart monitors
  • X ray equipment
  • GPS technology
  • Automotive industry
  • Aerospace industry
  • Military applications, and more.

Single-Layer vs Multilayer PCBs, who wins the ultimate battle?

The answer to that lies in your requirements. It is the project that will determine the type of board that works well. To come to the right conclusion on what kind of board will work well for you, you need to consider the following aspects:

  • The level of functionality required- More complex functions require multi layered boards.
  • The acceptable size- If your requirement is that of a smaller space, multilayer boards are likely to work better.
  • The need for durability- Typically multilayer PCBs are more durable.
  • Your budget- If your budgets are low, single-layer PCBs are likely to make a better fit.
  • Timelines- Single-layer boards have faster turnaround times.

So go ahead and make the right choice!

At Technotronix, our highly qualified and experienced multilayer PCB manufacturer ensure that all the layers are correctly registered. Adhering to high quality multilayer PCB manufacturing practices, we are equipped to handle complex boards with up to 24 layers, which are laminated to insulate them. Whether it is sticking to the product specifications or stringent quality controls, there is no stone that we leave unturned in our quest to deliver the best.

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The Essential Guide on PCB Fabrication Techniques!

By | Date posted: | Last updated: July 31, 2021
PCB Fabrication Techniques

Before delving into the PCB Fabrication techniques, it will be worthwhile to understand what exactly PCB Fabrication means. Simply put, PCB Fabrication refers to the process that transforms a PCB board design into a physical structure. This structure, of course, is built on the exact specifications provided in the design package. If you are a designer, an overview of PCB Fabrication Techniques can go a long way in helping you design the PCB in a manner that manufacturability is not compromised.

Here are the techniques involved in the process of PCB Fabrication:


This is the stage where your digital PCB design translates into the physical board. Here are the steps involved in the process:

  • The image of the PCB layout and design
  • The board is coated with liquid photoresist.
  • While the exposed areas of the photoresist harden the remaining is removed.

PCB Etching

This process essentially involves removing the excess metal from the PCB by way of an industrial solvent. Popular etching chemicals include:

  • Ferric Chloride
  • Cupric Chloride
  • Alkaline Ammonia
  • Ammonium persulphate

PCB Lamination

More often than not, a PCB comprises of multiple layers of copper which are interspersed with non-conductive substrate. In the process of PCB lamination, heat and pressure are applied to the various layers.


Machining takes place a number of times in the PCB manufacturing process, largely at the following stages:

  • Through-holes and vias: Stacking multiple boards together, securing them in place and drilling through holes, can go a long way in saving time and money. Ideally the non-plated holes are drilled after the photoresist is applied.
  • Panelization: The process of panelization ensures that multiple boards can be fabricated and tested in one go. V Scores or breakaways can facilitate removal of the board once the process of manufacturing gets over.

When it comes to manufacturability of the boards there are a number of factors that need to be kept into account. Some of these include:

  • Thickness of the PCB
  • Choice of material
  • Type of drilling


Depending on the environment in which the PCB has to function, there can be a wide variety of plating that can be done. Some of the common plating techniques include:

  • Electrolytic Plating: This kind of plating works well for high volume projects. A concentrated solution of the plating metal is used to dip the boards. A process of electrolysis follows that plates the exposed metal surfaces.
  • Electroless Plating: As the name suggests, this does not involve the use of electric current. Instead self-reducing agents are used. The big advantage that this offers is that the coating turns out to be uniform and anomalies are minimized
  • Dry Plating: Also referred to as Plasma Plating, this works well for fine line circuit plating. This involves the use of an inert gas. The metal particles from a charged target is removed and re-deposited on the target under a vacuum.

The importance of understanding the PCB Fabrication Process

It is imperative to understand the PCB Fabrication process to be able to make a tangible difference to the following areas:

PCB Manufacturability

A comprehensive understanding of the above processes can go a long way for PCB designers as minimum manufacturability issues are faced. The designers are also sensitized to the impact that aspects such as:

  • Line width
  • Spacing
  • Number of holes etc., on the cost of the PCB.

The added advantage is that designing the board with these aspects in mind leads to ensuring that there are no costly errors at a later date which call for resigns and delay your project. In a milieu where quick go-to-market is a major source of competitive advantage, these delays can prove to be quite detrimental.

Reliability & Yield Rate

Inaccurate fabrication of boards can have a major impact on the yield rate of the board, so you may land up with many unusable boards. Also for your board to meet the classification standards it needs to meet some specified levels of reliability. If the board does not meet the classification standards, it could result in premature board failure.

Clearly then, the design choices made, have a far-reaching impact on all the subsequent stages of the PCB. Incorporating knowledge of PCB Fabrication at the design stage, can go a long way in improving the manufacturability and hence the efficiency of the PCB.

Technotronix can adopt advanced methods of PCB fabrication, which can give you the finest PCB fabrication services in the world. The PCB fab services from our experts will take it to the next level by accepting every type of latest technologies. They understand every needs of the clients and offer smart & multi-layer PCBs.

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Top trends and techniques for sequential lamination PCB

By | Date posted: | Last updated: May 17, 2021
Sequential Lamination PCB

The trend of utilizing electronic products is the motivation to produce more technical creations. As the ages become advanced, electronic innovation also gets smarter with time. From households to rockets technology in every possible field, electronic devices are spreading their demands.

And as the demand graph is getting peak, competition in the market is getting neck to neck. Any traditional mass production cannot be enough to beat the opponent. Highly skillful, advanced-level service only has to provide room for your company in this market.

This is not an easy operation to become outstanding in the market. From material selection to design in every aspect, you have to put extra care to make it unique from the market. Great quality of PCB manufacturing techniques is the heart of your best PCB Assembly foundation.

What is sequential lamination PCB?

Production fabrication is the process of rearranging a circuit board to a bodily configuration of PCB based on how the client demand. Sequential lamination is one of the steps of technical lamination.

Sequential is the method of adding a copper or some specific metal layer. For the best results, every PCB board is going through a minimum of two lamination processes or more than that.

Traditional circuit board sequential lamination

Nowadays, multilayer PCB used most of the time. This type of board is tinier in size. The component also used in the time of manufacturing concise the density of the product. In a simple word, multiple layers of circuit boards make Assembly manageable to use flexibly.

Simultaneously, PCB’s stuck-up design is a single-layer circuit board that needed some convenient fabrication. By knowing the manufacturing competence well, it will be easy to do that.

Sequential lamination is a common step in the PCB fabrication process. The process is described below –

Sequential lamination’s success rate in multiple-layer boards is very high. Especially in high-density electronic technology, it is more fruitful. Here it’s the main function to maintain high signal messages like communication.

Some challenges sequential lamination has to face

The whole process of lamination is not that easy, and it seems it has to phase multiple challenges in its procedure. Like –

Limitations in the number of cycles

As said previously, for the favorable results of lamination, more than two cycling required. But that doesn’t mean it accomplished in whatever times you want. Cycling has to be restricted two-four times to prevent defect to the Assembly.

Aspect ratio

For the drill holes equipment, other factors that have to be concerned with are the aspect ratios. Aspects ratio is the measurement of depth in the aspect of the diameter of the drill hole.

Based on what type of equipment is used in bore vias to like – beams drill or drill press, the ratio is varied, and according to it, the calculations are done. The aspect ratio limited the layer used in multiple layers circuits for different calculations.

Drill hole alignment in case of Garber file

Gerber is a 2D file commonly used in PCB designing. Designers like the Garber file because of its generating power of software in PCB Circuit.

But there are some problems during the Gerber file’s lamination, as there is a huge chance of mistake in the fabrication of the circuit board. That causes misalignment of the circuit. This type of error increases the overall cost of the circuit and the time of reversal.


Sequential lamination is a spontaneous building process that requires several days to build the desired board. So, the more time it consumes to develop the circuit, the more expenses gradually increase with it.

Despite all these limitations, it is one of the best processes of fabrication in PCB circuit boards. It is very useful because it minimizes the circuit’s layer and can maintain the temperature with environmental changes. Not only that, it reduces the weight of the copper layer. Sequential lamination cut down the need for buried vias or blind via which is also one of the plus points of this lamination.

So, if it is possible to neglect the shortcomings of this lamination, it will be a blessing to the technology of PCB.

Trends for sequential lamination:

  • Number of layers reduce in a noticeable extent by using sequential lamination.
  • Make the PCB so that it can handle easily.
  • The structure of the board gets simplified.

Technique for sequential Lamination PCB:

The above mentioned are some weaknesses of lamination techniques. Now in this passage, we discussed the technique we have to use for the best results of sequential lamination.

  • The cause of all this deformity is the many layers used in PCB. Big numbers of layers reduce the potential of the PCB. So, if the number of layers used is decreased, it will be a fair solution to the problems.
  • To minimize the number of layers, some embedded elements can be put in to layers. By this method, apart from the top and bottom layers, only a few layers are required.
  • Proper alignment of the components used in the board, which is connected by each. Passive components need to use more in number to delete the drawback. And the active components are used to try to embed them in between layers of the circuit.
  • Another solution is using a 3D device instead of 2D. The more advanced technology of 3D helps to cope with the consequences of lamination.
  • Turnkey PCB assembly is an incredible remedy to all problems. Turnkey PCB Assembly will handle every problem by its organized management.
  • From manufacturing, maintaining, stoking to delivering every aspect are rectified by Turnkey’s advanced technology. And Turnkey PCB is also very reliable and safe. You can trust on its work efficiency.

The commitment of the sequential lamination is very straightforward. It furnishes PCB multiple-layer stack up, which gives security to your precious documents. PCB Lamination techniques will be a good option for circuit designing. So, if you want an up-to-date, ready to use, modern PCB assembly circuit, definitely go for sequential Lamination PCB.

At Technotronix, we have over 4 decades of experience in PCB fabrication. You can rely on our PCB design and fabrication process that, in turn, lead to that perfect PCB fabrication. An improper design can lead to a wide variety of issues such as imbalance. We provide you products at an affordable price, including testing services. If you require any kind of printed circuit board fabrication, conformal coating, NPI, circuit board prototype services, you can drop an email to or give us a call at 714/630-9200.

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