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  • Manufactured with more advanced features
  • Fabricated through advanced technologies
  • Produced by well-experienced and professional designers
  • Vendas ao vivo e suporte técnico 24 horas por dia, 7 dias por semana

O Isola FR406 é compatível com RoHS?

Sim, o laminado FR406 é compatível com RoHS.
This means it does not contain the hazardous substances restricted by Directive 2002/95/EC.

The restricted substances are polluting the environment, making them dangerous to the environment.
Overall, they are not hazardous with regard to occupational exposure during Isola laminate production and recycling.


Quais são as aplicações do Isola FR406?

Isola FR406 is superior in performance of FR-4 processing, which makes it fit for application like:

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Automotive and transportation industry

due to its high thermal resistance.

Can FR406 material withstand multiple times reflow soldering?

Yes, Isola FR406 can withstand several times reflow soldering process, it has excellent no post bake after pressing, UV blocking and AOI fluorescence and superior thermal and chemical and performance.

So FR406 can perform well in the reflow assembly process. If you have any projects requiring this material, please let us know.


Venture manufactures high-quality Isola FR406 with more advanced features. Our Isola FR406 has the high thermal performance. Our Isola FR406 has Tg: 170°C (DSC) and Td: 300°C (TGA @ 5% wt loss). It also has excellent thermal and chemical resistance. Aside from that, we manufacture Isola FR406 with lower CTE from ambient up to 288°C. Venture is a professional manufacturer of Isola FR406 that will surely suit your requirements. Through the help of our advanced technology, we are able to supply you with the best quality Isola FR406!

Seu fornecedor líder de Isola FR406 na China

Venture Isola FR406 is a high-performance epoxy prepreg and laminate. Our Isola FR406 has set the industry standards to have the highest-performance epoxy materials.

Venture manufactures high-quality Isola FR406 with more advanced features. Our Isola FR406 has the high thermal performance. Our Isola FR406 has Tg: 170°C (DSC) and Td: 300°C (TGA @ 5% wt loss).

Aside from that, our Isola FR406 also comes with AOI compatibility and UV blocking. It has an enhanced fluorescent. Our Isola FR406 is also compatible with any AOI equipment that typically includes reflectance laser-enhanced systems.

It also has excellent thermal and chemical resistance. Aside from that, we manufacture Isola FR406 with lower CTE from ambient up to 288°C.

Venture Isola FR406 undergone the standard FR-4 processing. It doesn’t undergo post bake after processing. It is also processed with hole wall and drilling parameters preparation.

Our Isola FR406 is engineered to meet the needs of any multilayer printed circuit boards. Venture Isola FR406 offers enhanced dimensional control. It also offers excellent thermal and chemical performance. We manufacture Isola FR406 with product consistency.

Isola FR406: o guia definitivo de perguntas frequentes


If you have any question about Isola FR406, the answer is right here.

Whether you want to learn about the properties, quality standards or relative thermal index – you will get the information in this guide.

Continue lendo para aprender mais.

O que é Isola FR406?

FR406 is the best high performance epoxy resin material.

The design of this Isola PCB material allows it to fulfil PCB multicamadas demands, while retaining conventional FR-4 processing.

Ilha FR406 laminate and pré-impregnado system boasts of high glass transition temperature and low dielectric constant and dissipation factor.

Isola FR406

 Isola FR406

What Are the Key Properties of Isola FR406?

The main features of Isola FR406 laminate and prepreg include:

  • Has Glass Transition Temperature of 170 Degrees Celsius
  • Laminates come as full size panel or sheet
  • Has Dielectric Constant and Dissipation factor of 3.93 and 0.0167 respectively.
  • Prepregs come as panel or roll
  • Uses square weave E-glass reinforcement
  • Has HTE Grade 3 or Reverse Treat Copper foil
  • Has Decomposition Temperature of 300 Degree Celsius

What Are the Advantages of Isola FR406 Laminate and Prepreg System?

The main benefits of Isola FR406 include:

  • The laminate and prepreg system is AOI fluorescence and UV blocking
  • Compatible with FR-4 processing
  • Requires no post bake following pressing
  • Ensure enhanced dimensional control
  • Has superior thermal and chemical and performance

What is the Difference Between Surface Resistivity and Volume Resistivity of Isola FR406?

Some of the main differences you need to know are:

· Resistividade de Volume (ρ)

Also known as electrical resistivity, volume resistivity refers to the insulation or electrical resistance of the Isola FR406 material.

The higher the resistivity of the material, the less easily it permits the flow of electric current, and vice versa.

Being a dielectric insulator, FR406 materials should feature very high volume resistivity values, ranging from 10⁶ – 10¹⁰ Megaohm-centimeters.

The measuring unit for volume resistivity is ohm-centimeters (Ω-cm) or ohm-meters (Ω-m).

Factors such as temperature and moisture affect resistivity.

· Resistividade de Superfície (ρS)

Surface resistivity (ρS) determines the insulation or electrical resistance of the Isola FR406 surface.

Similar to volume resistivity, the PCB material needs to have very high surface resistivity values.

The values range from 10⁶ — 10¹⁰ Megaohms per square, and it is as well affected by temperature and moisture.

How do you Test the Flammability of Isola FR406 laminate?

The commonly applied flammability test for establishing relative flammability of PCB materials is UL94.

It determines the capability of FR406 material to extinguish fire and it’s dripping behavior after exposure to open flame.

During the flammability test, you subject the Isola FR406 laminate to a radiant heat source or small open flame.

The test takes place under-regulated laboratory conditions.

The flammability test for the Isola laminate material determines the self-extinguishing duration of the vertically placed PCB material.

It also examines the burning duration, afterglow duration and dripping behavior of the material.

Most Isola FR406 materials have a flammability rating of UL94 V-O.

This implies that the laminate will self-extinguish within 10 seconds and exhibits no dripping.

Why is Relative Thermal Index (RTI) an Important Property of Isola FR406?

High-frequency FR406 circuit boards are likely to generate high-temperature conditions.

The more energy you require, the more heat you should anticipate.

Failure in these high-temperature PCB applications can be disastrous.

Therefore, you must generally use the right material, and specifically PCB laminate.

You should make sure that the CTE of the Isola FR406 laminate conforms to that of other materials.

This helps in protecting the Isola circuit board from damaging impacts of thermal expansion.

Therefore, it is important to consider the Relative Thermal Index (RTI) of the FR406 laminate.

It describes the maximal temperature that a PCB material can endure eternally without compromising crucial properties or performance.

Furthermore, Maximum Operating Temperature (MOT) is another UL rating backing RTI.

MOT describes the highest temperature a specific PCB construction can endure without alterations in material properties or performance.

However, the MOT cannot surpass the RTI of a specific Isola FR406 material.

What are the Parameters for Single-Stage Press Cycle Lamination?

Also referred to as No “Kiss” cycle, ensure to observe the following lamination parameters in single-stage press lamination:

1. Center/load the Isola FR406 laminate and prepreg as fast as practical. For 30 minutes, pull vacuum on the lifters.

2. Exert full pressure of 14.1-24.6 kg/cm2 (200-350 PSI) on the panels. For first pressure setting, the suggested pressure is 19.3 kg/cm2 (275 PSI).

3. Modify the heat rise to 4.5 to 6.7 degrees Celsius, as determined between 79 to 135 degrees Celsius. Perform this by employing the correct quantity of pressure padding and/or regulating ramp rate of the platen.

4. Cure for at least 50 minutes at 177 degrees Celsius after the center of laminate reaches the designated point.

NOTE: A cure for 60 to 70 minutes might be suitable for boards having thickness equal to or greater than 3.2 mm.

It may as well be ideal for high layer count Isola FR406 boards.

You can cure Boards having thickness lower than 0.070″ for 50 minutes.

5. If possible, after 15 minutes at cure temperature, decrease the pressure to 3.5 kg/cm2 (50 PSI). This is instrumental in stress relief, which might help in succeeding lead-free processing.

6.Cool the FR406 laminate as slowly as practical or at 2.8 degrees Celsius per minute, from 185 to 135 degrees Celsius. You do not require post baking.

What is the Maximum Chipload and Cutting Speed of FR406?

The recommended maximum cutting speeds when processing should range from 550 to 600 SFPM.

Similarly, for 0.040” and beyond bit diameters, the chipload should not surpass 3.5 mils.

Which is the Resin System Used in Isola FR406?

The commonly used resin systems in the construction of FR406 are epoxy-based.

The costs of epoxy resin systems are relatively low, while it has the capability of a wide variety of formulation variations.

Its glass transition temperature ranges from 110 to 170 degrees Celsius.

Moreover, this type of resin system are highly compatible with the majority of Isola PCB fabrication processes.

The main types of epoxy resin systems include:

Material Isola PCB

 Material Isola PCB

· Di-functional Epoxies

This resin systems start with brominated bisphenol-A epoxy resins and includes accelerators, hardeners, and fillers.

There exist various Di-functional Epoxy Resins classified by the glass transition temperature into:

  • Low-end Traditional Di-functional Systems: Tg ranging from 110 to 130 degrees Celsius
  • Modified Di-Functional Epoxy Systems: Combined with tetra-functional or multi-functional epoxy resins with Tg ranging from 135 to 160 degrees Celsius.

Midrange di-functional modified epoxy resin systems give enhanced performance in greater layer count designs.

· Tetra-Functional Modified Systems

In this type of epoxy resin, it provides higher glass transition temperatures because of improved cross-linking.

Moreover, the resin system also offers better resistance to most of the chemicals and solvents applied in the manufacturing of Isola FR406 PCB.

· Pure Multifunctional Epoxy Systems

Have Tg of 170 degrees Celsius and above.

Furthermore, they lead to enhanced performance in greater layer count PCB designs where reliability and measling resistance are problematic.

· Low-Flow Epoxy Systems

In this type of epoxy resin system for FR406, it exhibits a restricted flow.

This makes the epoxy resin suitable for the fabrication of rigid-flex Isola PCB or heat sink bonding.

They are available in various flow ranges and Tg.

· Thermally Conductive Epoxy Resin Systems

The design of these resin systems enables to have considerably higher Tc values compared to conventional epoxy resins.

Typical Tc for thermally conductive epoxies varying from 1 to 3 W/m-K in comparison to 0.25 W/m-K for conventional epoxy systems.

They incorporate thermally conductive fillers and use lead-free resin technology.

This type of FR406 epoxy resin system encourages the transfer of heat both laterally within and through the laminate.

This minimizes the temperature at the Isola PCB surface by between 10 to 20 degrees Celsius compared to standard systems.

Are there Blended Resin Systems for FR406?

Yes, there exist combinations of different epoxy resin systems.

The blend resin systems include Epoxy-PPO, BT-bismaleimide, Epoxy-Polyimide, BT-Epoxy, among other types.

However, it is normally incorrectly presumed that blending will lead to properties in between the two basic blend constituents.

This presumption is not scientific and results in problems.

Why is Resin Content Important During Manufacture of Isola FR406 laminate?

Resin content refers to a prepreg total weight which is resin.

Together with flow, resin content dictates the thickness of Isola FR406 laminate after lamination.

It as well determines the amount of resin that will be available to fill the internal copper layer of a PCB.

Moreover, resin content equally has important impacts on properties like:

  • Drilling and etching quality.
  • Constante dielétrica (Dk)
  • Dimensional stability (registration)
  • Coefficient of thermal expansion (X-Y CTE)

Controlling resin content relies on base fabric weight variation, coater operation consistency and batch-to-batch alteration in resin solution rheology.

Most prepreg have a tolerance of ± 3 percent.

The standard method of testing the resin content of Isola FR406 laminates and prepregs is a “burn out”.

In the technique, you subtract the ultimate weight following a burnout at 1100 degrees Celsius from the initial weight.

The difference, stated as a percentage, represents the resin content.

What are the Most Essential Properties to Consider When Choosing Isola FR406 Laminate?



O mais essencial ISOLA PCB FR406 laminate properties will differ based on the intentions of the designer and limitations of the design. Nevertheless, there exist some givens.

All laminates irrespective of the material or PCB application require specific inspection level standards such as:

  • Espessura do laminado
  • Internal cleanliness
  • Copper surface quality
  • Copper foil adhesion

All these features are almost unrelated to the resin system chosen.

However, they are crucial to the FR406 board design, construction and primary product function.

Moreover, Isola FR406 material should maximize the performance of the ultimate PCB assembly.

Therefore, you need to factor in the environmental and performance specifications for the board assembly.

For that matter, here are the 4 main materials characteristics you should consider when choosing FR406 PCB material:

· Coefficient of Thermal Expansion (CTE)

CTE establishes how much the Isola laminate expands when heated, which is crucial in the Z-direction.

Often, the expansion is higher than the glass transition temperature (Tg).

Failure can happen in case the CTE is inadequate or too high within the material.

This is because of fast expansion of the FR406 above Tg.

· Temperatura de transição vítrea (Tg)

The Tg denotes the point in temperature where the laminate transforms from an inelastic PCB material to a more elastic material.

The expansion rate increases at temperatures beyond the Tg of the Isola FR406 laminate.

Note that Isola laminates can feature similar Tgs but differing CTEs, though lower CTE is better.

· Temperatura de decomposição (Td)

This is the temperature at which the FR406 material starts to delaminate and losses 5 percent of its initial weight.

For this reason, PCBs applications in demanding environments will need a Td equal to or higher than 340 degree Celsius.

· Time to Delamination (T260/T288)

Time to delamination at 260 and 288 degrees Celsius represents point at which there is irreversible change in thickness of FR406.

The change is due to laminate failure as a result of thermal decomposition of the epoxy resin systems.

During selection of PCB material, you must understand how you need the Isola FR406 laminate and prepreg to perform.

The laminate thermal properties need to closely align with that of the components you will solder to the Isola PCB.

Which are the Alternative Oxides Used in Isola FR406 Treatment?

Oxide alternatives have replaced the application of conventional brown oxide treatments in most PCBs today.

They offer superior inner layer adhesion, better acidic environment resistance, and are easier to utilize compared to traditional systems.

They claim superior solder mask adhesion and dielectrics to processed layers.

This is because they offer higher bonding surface area and considerable reduction in pink ring due to their high acid resistance.

Majority of the alternative oxide systems involve a sequence of individual baths.

This makes them easy to integrate to the flow of traditional PCB internal layer processing.

The alternative oxide treatments in application today mostly entail a sulfuric peroxide system that gives a cuprous oxide (Cu2O).

The cuprous oxide ensures superior physical characteristics compared to the dendritic black oxide found in conventional laminate treatment systems.

Though reduced black oxides generate cuprous oxides, it involves an extra step.

Therefore, the alternative oxides treatments are the best since they are straightforward to use and ensure reduced cost.

The present shift to lead-free assembly requires a general system that features more resistance to thermal shock.

The alternative oxides ensure internal layer bonds as great as 4 lb/in in the case of high-performance Isola materials.

Since the new treatment systems include no strong caustics, it reduces dramatically the problems of resin rinsing to avoid delamination swelling.

Why the Heatup Rate Important During Isola FR402 Lamination?

Material laminado PCB

Material laminado PCB

The rate of heat-up is a very critical parameter of all FR406 resin systems.

Controlling the heat up rate is one of the key factors of manufacturing good multilayer Isola PCB.

It is instrumental in regulating the rate of temperature rise through the crucial flow period.

The period covers the point the resin system starts to melt and point it attains a very high viscosity.

The high viscosity does not permit considerable extra flow.

The resin system might not flow correctly when the heat up rate is too slow.

On the other hand, if the rate is too quick, it may lead to uneven thickness and flow.

Slow rise in heat can lead to high melt viscosity.

This can produce local voids and/or make the resin incapable of flowing around copper structure or oxide crystals.

Either scenario can allow chemicals to destroy the oxide deposit leading to “pink ring”.

Fast heatup rates cause higher than anticipated FR406 resin flow.

This can lead to resin starvation which leaves fabric fibers in direct contact with the inner copper layer.

Such situation can give a means for chemicals to leak along glass bundles through a capillary action.

Therefore, in establishing the heatup rate in an Isola FR406 package, the positioning of the control thermocouple is important.

You should place the thermocouple roughly two-thirds of the distance between the book center and outside (closet the press platen).

In an ordinary book, you can find three laminates, each having a thickness of 0.090″- 0.130″.

The outside may go beyond the gel point if you place the thermocouple at the middle of the venter lam.

This happens as the interior is holding up to catch up.

Conversely, if you apply the pressure too late, there will be reduced flow of the FR406 resin.

As a result, the Isola laminate can void and/or delaminate.

What are the Effects of Pressure During the Lamination of Isola FR406?

When the pressure of lamination is too low, the Isola FR406 might display poor interlaminar bonding.

It may as well exhibit low-pressure sections where there is insufficient flow of resin.

The common solution might entail slightly increasing the pressure, or adjusting the rate of heating to open the lamination window.

Conversely, too high lamination pressure may lead to distortion of the inner layers.

Moreover, high pressure causes crushing of glass knuckles against traces of inner layer.

The FR406 PCB might exhibit a “football” shape having thin margins because of excessive resin flow.

However, you can correct this problem by reducing the pressure, or if necessary, the heating rate.

Heatup rate is crucial because overall flow relies not only on lamination pressure but also on the resin melt viscosity.

Both the “open time” and melt viscosity rely to some extent on the rate of heat.

It is often advisable to ensure a baseline heat-up rate of 10 degrees Fahrenheit per minute.

There is a perfect approximation technique for starting pressure that facilitates modification of panel size and type of Isola FR406 resin type.

Larger panels need higher pressure to attain equal resin flow.

Simply, there is a direct proportionality between the PCB area and the pressure required.

Which are the Quality Standards for Isola FR406 Laminate and Prepreg?

Here are the quality standards that your FR406 PCB material should meet:

  • Padrões ASTM
  • Normas UL
  • Padrões ISO
  • Padrões RoHS
  • Padrões ITAR
  • Padrões ANSI
  • Padrões CE

Depending on your application requirements, Venture Electronics has the best Isola FR406 material.

Fale conosco hoje mesmo por todo o seu Material PCB necessidades.

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