FR-4 Vs PCB Rogers: 5 Main Differences


PCBs have become part and parcel of every electronic device.

They are playing an important and essential role in the electronic industry.

The performance of your electronic appliances totally depends on these PCBs.

Furthermore, if you want that your electronic devices perform ideally, then you have to select an ideal material.

Nowadays, manufacturers are using different kinds of materials in fabricating PCBs.

The Most Common Materials are:

  • HDI material
  • FR-4 materials
  • Rogers PCB materials and many more.

However, FR-4 material is highly affordable and helps the consumers to reduce their costs in making PCBs for their products.

According to the manufacturers, FR-4 is an ideal choice for fabricating highly efficient PCBs.

Moreover, it is also a low-cost and effective material for several different applications.

Electronic manufacturers also suggest Rogers material for making effective and affordable PCBs. But most of the customers look confused in choosing between FR-4 and Rogers materials.

So, we are here to explain both of these materials. Moreover, we will also explain the main differences between the FR-4 and Rogers materials.

What is FR-4 material?

PCB board manufacturers make FR4 material with the help of fiberglass cloth. It comes with flame-resistant capabilities.


According to electronic engineers, FR-4 is one of the most versatile and popular materials.

Furthermore, all the manufacturers believe that FR-4 glass epoxy is high-pressure thermoset plastic laminate grade.

Additionally, it has better strength-to-weight ratios. The most common material is FR-4 material because of its electrical insulator quality.

Because it has the ability of zero water absorption and has great mechanical strength.

So, manufacturers mostly use it as an electrical insulator because it possesses considerable mechanical strength. This low-cost material is also famous for its following quality,

  • It retains its electrical insulating properties and high mechanical values in both humid and dry situations.

All these mechanical and electrical qualities have made it a perfect material for all kinds of mechanical and electrical devices.

Hence, manufacturers are mostly using FR-4 material because it has a great ability to perform well in all environmental conditions.

What is PCB Rogers?

In fact, Rogers is a famous name that develops laminate materials.  Moreover, manufacturers mostly use these laminate materials to fabricate Printed Circuit Boards. Today manufacturers are making most of the PCBs with the help of FR-4.

Rogers PCB

Rogers PCB

As it has the capability of flame-retardant level 4. Moreover, it is epoxy composite/ glass fiber.

It has also laminated with copper on one or maybe on both sides.

Rogers is actually famous for its cores with the best high-frequency qualities. for example, PTFE (Teflon).

FR-4 vs Rogers 5 Main Differences

1, Price Comparison

It is very important for you to select the perfect material for manufacturing the best quality PCBs.

Moreover, the performance of PCBs really depends on the material which you select.

Additionally, these materials should also be affordable.

Hence, when we talk about FR-4 and Rogers materials, they are different in their prices.

Furthermore, when we compare these both materials, we have found that,

  • FR-4 material is cheaper in comparison to Rogers material. FR-4 is low-cost.

So, manufacturers generally prefer it for their least processing prices. Basically, these two materials provide you option to select according to your needs and requirement.

  • If you want to create your PCBs on a low budget then FR-4 will be your first choice.
  • If you want high quality with best performing PCBs then Rogers materials will be an ideal choice.


But always keep in mind that Rogers materials may be your best choice. It is a fact that selecting low-cost material can cause very expensive in the end.

2, High-Frequency Comparison

PCBs that designers make using FR-4 and Rogers 4350b or Rogers 4350, are extremely popular.

Because they have a wide array of electronic applications. In fact, PCBs that designers create by using FR-4 materials are reliable and low cost.

Moreover, these PCBs are famous because of their mechanical and electrical features.


Although FR-4 material is a cost-effective and reliable choice for your PCBs.

But they are not a perfect choice for PCBs required for high-frequency devices.

In fact, Rogers has manufactured extremely popular high-frequency-special laminates. moreover

when designers compare with PCBs made of FR-4 materials, they find that Rogers materials display a close to 20% reduction when it comes to dielectric constant.

Hence, it will be totally your decision to select materials which suit you the best.


If your project needs high-frequencies laminations for maximum electrical and mechanical needs then Rogers materials is best choice.

3, Impedance Stability Comparison

Basically, Impedance is the measurement of resistance of the electric current to the flow of energy when manufacturers apply some amount of voltage.

A perfect example of impedance will be, a line of resistance in the reaction of an electric current. Furthermore, Stable impedance has become necessary for a lot of designs.

Hence, it is an area where both of these materials differ from one another. such as FR-4 and Rogers.

It is the reality that FR-4 material is low-cost material. But are greatly susceptible to vast variations in dielectric constant across length and width of the substrate. It happens even when the temperature changes.

In fact, if you need PCBs that work stably in broad changes of temperature with little variations then Rogers materials are best.


Rogers materials are also best in the condition that your PCBs have to perform in high-temperate environments.

4, Temperature Management

Basically, heat management materials are part and parcel of many electronic applications.

Because the overall temperature of these devices requires maintenance in several specific levels.

Hence, it is a fact that materials with thermal management are a basic need for manufacturing PCBs.

If PCBs have to function at a high-temperature range with little variations then Rogers materials are better choices. In short, when it comes to temperature management, Rogers material performs better based on the fact that they have less variation compared to FR-4 content.


High-frequency thermoset-based laminates such as Rogers’s materials are highly robust compared to FR-4 materials. Moreover, they are popular for their excellent handling of high temperatures. So, they will be your best choice.

5, Space Applications

Nowadays scientists travel in space for space explorations.

Almost all the main countries are sending their people to space for more and more explorations.

Moreover, when it comes to space applications, PCBs must have to perform highly accurately.

So, you cannot use all the materials but you have to choose the best one. Because when it comes to space exploration, you need excellent functionality.

There are many materials that can fail for such highly functioning. In fact, there is outgassing in the space.

Outgassing occurs when all the trapped gases get discharged in the procedure of powder coating during the procedure of curing.


Although FR-4 materials deliver an excellent balance when we talk about,

  • Durability
  • Electrical stability
  • Manufacturability

However, Rogers materials are best for space applications. Basically, they are low outgassing for all space use and exploration.


As you have known the importance of PCBs in modern electronic devices.

They play an important role in all electronic appliances or devices of our daily use.

They will perform well if you select some of the best materials for manufacturing them.

So, FR-4 and Rogers materials are one of the best materials.

But both are different according to your needs. FR-4 is low-cost and better for low frequencies applications.

Furthermore, Rogers materials are best for high performing applications.

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