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What is Rogers CLTE-AT PCB ?

The Rogers CLTE-AT is a special laminate that features tiny-dispersed ceramics found inside a PTFE-based composite. They are reinforced using woven glass to boost their durability and efficiency. Due to this unique features, the Rogers CLTE-AT has become pretty popular in the tech market. It has multiple uses and provides durability and efficiency each time. In addition, its insertion loss falls under the best-in-class category making it one of the best laminates to utilize in your projects. But are these the only benefits and features that make the Rogers CLTE-AT unique? Are there more features that make the Rogers CLTE-AT stand out? And if so, is it worth trying out considering the many options in the market?

About the Rogers CLTE-AT, what makes it unique?

The Rogers CLTE-AT laminate bears beneficial features that help it optimize the performance to cost ratio. On top of that, they also provide a pretty consistent and reliable dielectric constant even though they are thick.

The Rogers CLTE-AT laminates have a pretty low loss tangent and a low conductive loss, making them more efficient in their job.

When utilizing the Rogers CLTE-AT laminate, you will most probably note the impact of the copper foil’s roughness on the conductor loss. Well, this happens because of an increase in resistance on the transmission line due to the “skin effect.”

The Rogers CLTE-AT laminate provides incredible peel strength. Moreover, it does so in such an efficient way that it does not turn to utilize the rougher, lossier coppers prevalent materials.

The Rogers CLTE-AT laminates bear low TCEr and CTE XYZ. It is hence great for the applications that need Dk stability, mechanical stability, and electrical phase stability that is over an operating temp range of -55 to 1500C. On top of this incredible stability, these laminates have low moisture and chemical absorption. They also have ease of processability, and dimensional stability. These features make the Rogers CLTE-AT one of a kind in the tech market to date.

The Rogers CLTE-AT laminate has a high thermal conductivity, which immensely improves its heat transfer rate.

Features of the Rogers CLTE-AT

The Rogers CLTE-AT laminate bears the following features:

Rogers CLTE-AT laminate has a thermal conductivity that is pretty high

They bear a PTFE/Ceramic microwave composite

Their tangent loss is low (it stands at 0.0013, which is pretty low when you compare it to other laminates)

They have a thick tolerance and a pretty reliable dielectric constant

As per insertion loss, the Rogers CLTE-AT falls under the “best-in-class,” which is the lowest in the commercial class

Lastly, the Rogers CLTE-AT is dimensionally stable and more robust mechanically

Benefits of utilizing the Rogers CLTE-AT

The Rogers CLTE-AT laminates are unique, as their features dictate. These same features make them pretty beneficial in the tech world.

Here are some of the benefits that you are likely to reap out of utilizing the Rogers CLTE-AT laminate:

Incredible thermal stability (Df and Dk)

Excellent Z, X, and Y CTE

High dimensional stability which is essential for multilayer board

Phase stability

Typical applications of the Rogers CLTE-AT

You can apply the Rogers CLTE-AT laminate in the following areas:

In RF/Microwave applications

To make adaptive cruise control and automotive radar applications

To create Temperature/phase-sensitive antennas

In Microwave and RF filters

Properties of the Rogers CLTE-AT laminate

Under this section, we shall be looking at the properties that make up the Rogers CLTE-AT laminate. Properties exist in different forms. For example, we have electronic properties, thermal properties, mechanical properties, et cetera. Each of these properties makes the Rogers CLTE-AT laminate distinct.

Electronic properties

The Rogers CLTE-AT bears the following electronic properties:

Dielectric constant

The dielectric constant of the Rogers CLTE-AT laminate might vary according to the laminate thickness. However, under standard instance, the dielectric constant is as follows:

  • At 1 MHz, their dielectric constant stands at 3.00
  • When you raise the bandwidth to 10 GHz, the dielectric constant remains stagnant at 3.00

Dissipation factor

The dissipation factor of the Rogers CLTE-AT laminate is as follows:

  • At 1 MHz, the dissipation factor of this laminate stands at 0.0013
  • When you boost the bandwidth to 10 GHz, you will not no change in the dissipation factor as it remains 0.0013

Dielectric temperature coefficient

The dielectric temperature coefficient of the Rogers CLTE-AT laminate at a temperature range of -40 to 1500C and a bandwidth of 10 GHz is:

  • -10 ppm/0C

Volume resistivity

Rogers CLTE-AT laminate bears the following volume resistivity value under normal circumstances:

  • 4.25 x 108 MΩ-cm (C96/35/90)

Surface resistivity

Rogers CLTE-AT laminates have the following surface resistivity:

  • 2.02 x 108 MΩ-cm (C96/35/90)

Dielectric breakdown

Dielectric breakdown is a crucial feature in the making of the Rogers CLTE-AT laminate. Under standard conditions, the dielectric breakdown of this laminate stands at:

  • 58 kV

Arc resistance

The arc resistance of the Rogers CLTE-AT laminate is:

  • 250 sec

Thermal properties

Thermal properties play a significant role in the efficiency of a component. The Rogers CLTE-AT laminate bears the following thermal properties:

Decomposition temperature

The decomposition temperature of the Rogers CLTE-AT laminate follows the following pattern:

  • At the initial stage, decomposition temperature stands at 4870C
  • However, at 5%, the decomposition temperature goes up to 5290C

T260, T288, and T300

The Rogers CLTE-AT laminate has the following T260, T288, and T300 values:

  • The T260 value is >60min
  • On the other hand, the T288 is also >60 min
  • And lastly, the T300 is also >60 min

Thermal expansion

Rogers CLTE-AT laminates have the following thermal expansion rates at different CTE positions.

  • At a temperature range of 50-1500C and CTE (x, y), the thermal expansion of the Rogers CLTE-AT laminate is 8, 8 ppm/0C
  • However, when you maintain the temperature range (50 – 1500C) and switch the CTE to (z), the thermal expansion rate goes up to 20 ppm/0C

Mechanical properties of the Rogers CLTE-AT laminate

Peel strength to copper

The Rogers CLTE-AT laminate has the following peel strength to copper variations:

  • After undergoing thermal stress, the Rogers CLTE-AT laminate bears a peel strength to copper of 7 lb/ln
  • When you expose this laminate to a pretty high temperature (say 1500C), the peel strength to copper goes up to 9 lb/ln
  • Lastly, when you expose it to the process solutions, the peel strength to copper goes down again to 7 lb/ln (1.2 N/mm)

Physical properties of the Rogers CLTE-AT laminate

The Rogers CLTE-AT laminate has the following physical properties:

Water absorption

Rogers CLTE-AT laminates absorb water at a pretty low rate of:

  • 0.03%

Density ambient

At a temperature of 230, the Rogers CLTE-AT laminate bears the following density ambient:

  • 2.06 g/cm3

Thermal conductivity

The thermal conductivity of a Rogers CLTE-AT laminate is:

  • 0.64 W/mK

Conclusion

The Rogers CLTE-AT laminate is one of a kind. It bears features and benefits that make it stand out in the tech market. What’s more, it is cost-effective as per productivity and performance, and its durability is incredible. Hence if you are looking for a laminate to utilize in your PCB, then the Rogers CLTE-AT laminate is worth trying.