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What are the Mechanical Properties of the Isola FR408HR PCB Material?

There are different reliable materials for printed circuit boards. The materials or laminates from Isola are known for their high performance and usually feature in resin formulations. These laminates’ designs are top-quality. Furthermore, with their great features, it will surely meet the needs of any demanding requirements for complex printed circuit boards.

In this article, we will be answering whatever questions you have on your mind regarding the Isola FR408hr PCB material. If you desire learning about the options necessary for treatment, the quality, features, benefits of this PCB material, we have everything covered in here.

Please join us as we explain further.

What is the Isola FR408hr PCB Material?

The Isola FR408hr PCB material has to do with the high-performance prepreg and FR-4 laminate system. Furthermore, this PCB material is great for multilayer printed circuit boards where there’s a need for thermal performance and maximum reliability.

Furthermore, this PCB material integrates the copyrighted multifunctional high performance epoxy resin system of Isola, which has been strengthened with the use of E-glass fabric.

Also these features along with its great moisture resistance, helps in the creation of a product which closes the void from a thermal and electrical aspect.

Features of the Isola FR408hr PCB Material

Below are the main characteristics and features of the Isola FR408hr PCB material

  • Prepreg appears like a roll or panel
  • The Isola FR408hr PCB material has a temperature of glass transition of 230 degrees Celsius
  • Makes use of square weave or a mechanically spread fiberglass fabric
  • Also, the laminate appears as either a sheet of full-size panel
  • Makes use of the RTF, VLP-2 and third grade HTE copper foil

Important Mechanical Properties of the Isola FR408hr PCB Material to Consider

Below are some of the main mechanical features of the Isola FR408hr PCB material, which you must consider.

Peel Strength

This is the measure of the bond strength between the Isola FR408hr PCB material and its copper conductor. 180 degrees should be the separation angle. Furthermore, the test of the peel strength has to be finalized under these conditions.

After the thermal stress where the Isola FR408hr PCB material is floated on solder for about 10 seconds at a temperature of 288 degrees Celsius.

Also, at temperatures that are elevated where the Isola FR408hr PCB material is exposed to air or hot fluid at a temperature of 125 degrees.

The last condition is after the exposure of the process chemicals where the product is subjected to some procedures in a chemical or thermal process.

Note that after the thermal stress, the Isola FR408hr PCB material has a peel strength of 5.5 lb/inch. Also, after the process solutions, it has a peel strength of 5.1 lb/inch.

Delamination Time

This signifies the time the Isola FR408hr PCB material will resist delamination. Delamination has to do with the resin separation from laminate, fiberglass, or foil, at a given temperature. At 260 degrees temperature, the delamination time for the Isola FR408hr PCB material is I hour. At a temperature of 288 degrees, the time is 30 minutes.

Young Modulus

This is also the tensile modulus and it also determines the strength of the Isola FR408hr PCB material. However, this also evaluates the ratio of the strain over the stress in any direction.

This mechanical property has a measurement unit along the length direction of 3695 ksi and along the cross direction, it has a value of 3315 ksi.

Flexural Strength

This property determines the Isola FR408hr PCB material’s capacity to fight against or endure any mechanical stress and stay without breaking.

This test involves the support of the edges of the Isola material, coupled with the applying of the load at the middle. In the length direction, the Isola FR408hr PCB material has a flexural strength of 72.5 ksi. Also, at the cross direction, the Isola FR408hr PCB material has a flexural strength of 58.0 ksi.

Benefits of the Isola FR408hr PCB Material

The following are the benefits of the Isola FR408hr prepreg system and laminate

Its thermal performance is high

  • From its values at 190°C, we can see that the glass transition temperature of this material is high
  • Also it has a Td (decomposition temperature) of 360°C. The TGA determines this and with a weight loss of 5%.
  • The coefficient of thermal expansion is low. This ensures its reliability.

Great Processing

This is close to the traditional processing of the FR4 for majority of high speed laminates of Isola

UV Blocking and AOI Fluorescence

The system of the Isola FR408HR PCB material has great UV blocking, as well as laser fluorescing. With this, you are sure to enjoy maximum compatibility with AOI systems, solder mask imaging (photo-imageable), and systems of optical positioning.

As a result of this, this ensures throughput and high accuracy when constructing and assembling the Isola FR408HR PCB.

Lower Loss and Enhanced Expansion of the Z-axis

The Isola FR408HR PCB material offers an advancement of 30% in the expansion of the Z-direction. However, this delivers a lower loss as well. This means an additional 25% when it comes to electrical bandwidth compared to other competing products.

Other benefits of the Isola FR408HR PCB material include:

  • Many lamination cycles
  • Compatible with any lead-free assembly
  • Via filling
  • CAF resistant

Applications of the Isola FR408HR PCB Material

The Isola FR408HR PCB material is useful in the following fields.

  • Defense and Aerospace
  • Storage, Computing, and Peripherals
  • Networking and Communication
  • Medical Industry
  • Instrumentation and industrial

Important Process Parameters to Ensure when Laminating the Isola FR408HR PCB Material

There are five main areas that you must look into when laminating the Isola FR408HR PCB material.

  • Maintain the inner layer and ensure that the FR408HR prepreg is dry before you laminate
  • Regulate the rate of heat up within the press for the lamination, so as to make sure that the melt flow is consistent.
  • Make sure you are using the right temperature for the lamination
  • Ensure the sufficiency of the cure time in developing the temperature of glass transition
  • Regulates cool down so as to prevent warpage

Conclusion

From this article, it is clear that the Isola FR408HR PCB material is of high quality and it is suitable for different PCB needs and applications.