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What is Rogers CLTE-XT PCB?

The Rogers CLTE-XT is a composite laminate that is filled with tiny-dispersed filler ceramics. It is reinforced with woven fiberglass and PTFE to boost its durability and stability. Its design helps it improve on the tangent loss while at the same time maintaining impeccable dimensional stability. But is this the only feature that makes the Rogers CLTE-XT laminate one of a kind? Does the Rogers CLTE-XT laminate entail more in terms of features, benefits, and properties? And lastly, should you opt to use this laminate in your project over other laminates on the market today?

About the Rogers CLTE-XT laminate and why you should definitely try it out

The Rogers CLTE-XT laminates utilize extended tech to boost their performance and efficiency. They also feature PTFE and ceramics which lowers their insertion loss.

The Rogers CLTE-XT is pretty reliable as it maintains most of its properties even when you expose it to a wide temperature range. You can hence utilize it in operations that require the use of high temperatures without causing damage to the laminate or the PCB.

Rogers CLTE-XT laminates also have impeccable performance. Their performance makes them suitable for airborne and ground-based radar and communication systems.

Benefits and features of the Rogers CLTE-XT laminate

The Rogers CLTE-XT laminates have the following benefits and features that make them stand out.

A tangent loss of about 0.0010 at a bandwidth of 10GH

The Rogers CLTE-XT laminate features a tangent loss of about 0.0010 at a bandwidth of 10GHz. Due to this bandwidth, the laminate manages to have low circuit losses while still maintaining impeccable dimensional stability.

A low CTE (Z-axis) of about 20 ppm/0C

The Rogers CLTE-XT laminate bears a pretty low CTE (Z-axis), which improves its reliability in THT assemblies.

A stable dielectric constant

The Rogers CLTE-XT laminate feature a stable dielectric constant over a wide temperature range.

Heavier metal backing variations

The Rogers CLTE-XT laminates feature a “heavier metal backing” series variation. These variations have a great design that features networks of embedded resistors.

Applications of the Rogers CLTE-XT laminate

The Rogers CLTE-XT laminate has the following applications:

  1. They come in handy in the creation of patch antennas
  2. They help manufacturers create phased array antennas
  3. Power amplifiers utilize this laminate
  4. And lastly, Advanced Driver assistance systems also utilize this laminate

Properties of the Rogers CLTE-XT laminate

The Rogers CLTE-XT laminate features the following properties:

Electrical properties

Electrical conductivity is a pretty crucial aspect to consider when choosing a laminate for your PCB. Hence let us look at the electrical properties of the Rogers CLTE-XT laminate to see how it conducts electric current.

Dielectric current

When you place the Rogers CLTE-XT laminate under the following test conditions:

  • A temperature of 230C
  • An RH of 50% and,
  • A bandwidth of 10GHz

It brings out a dielectric current of 2.98

Dissipation factor

By placing the Rogers CLTE-XT laminate under the following test conditions:

  • A temperature of 230C
  • An RH of 50% and,
  • A bandwidth of 10GHz

The dissipation factor of the Rogers CLTE-XT laminate hits 0.0021

Dielectric constant

The Rogers CLTE-XT laminate has a dielectric constant of:

  • 2.98 when you place it under a bandwidth of 10 GHz

Thermal coefficient of dielectric constant

The thermal coefficient of the Rogers CLTE-XT laminate stands at 6 ppm/0C under the following conditions:

  • A temperature range of -50 to 1500C and,
  • A bandwidth of 10GHz

Volume resistivity

The volume resistivity of the Rogers CLTE-XT laminate is 1.40 x 109 Mohm-cm under the following test conditions:

  • C-96/35/90

Surface resistivity

The Rogers CLTE-XT laminate bears a surface resistivity of 1.30 x 106 Mohm under the following test conditions:

  • C-96/35/90

Electrical strength

The Rogers CLTE-XT laminate has the following electrical strength under normal conditions:

  • 1100 V/mil

Dielectric breakdown

The dielectric breakdown of the Rogers CLTE-XT laminate is 64 kV under the following test conditions:

  • X/Y direction
  • D-48/50

Thermal properties of the Rogers CLTE-XT laminate

Print Circuit boards undergo a lot of heating during their assembly phase. They also function under machines that eject a lot of heat. Hence having a laminate that has impeccable thermal properties is crucial.

The Rogers CLTE-XT is one of those laminates that bear remarkable thermal properties. These properties include:

Decomposition temperature

The decomposition temperature of the Rogers CLTE-XT laminate stands at 5.38 under the following test conditions:

  • Exposure to a temperature of 1050C for about 2 hours and,
  • A weight loss of 5%

Coefficient of thermal expansion

Under the following test conditions:

  • A temperature range of -55 – 2880

The x coefficient of thermal expansion stands at 9.9 ppm/0C.

The y coefficient of thermal expansion, on the other hand, stands at 9.4 ppm/0C.

And lastly, the z coefficient of thermal expansion shoots up to 57.9 ppm/0C.

Thermal conductivity

The thermal conductivity of the Rogers CLTE-XT laminate is 0.5 W/mK under the following test conditions:

  • Z-direction

Delamination time

The Rogers CLTE-XT laminate has a delamination time of >60 minutes when you place it under a temperature of 2880C.

Mechanical properties of the Rogers CLTE-XT laminate

The Rogers CLTE-XT laminate brings out the following properties when you apply force onto it:

Copper strength

After exposing this laminate to thermal stress (using a temperature of about 2880C) for 10 seconds. It exhibits the following copper strength:

  • 1.2 N/mm

Flexure strength

The Rogers CLTE-XT laminate has the following flexure strength under a temperature of 250C (+/- 30C):

  • 92.4, 86.9 MPa

Tensile strength

The tensile strength of the Rogers CLTE-XT laminate is 73.8 and 71.0 under the following test conditions:

  • A temperature of 230C and,
  • 50 RH

Dimensional stability

Rogers CLTE-XT laminates have dimensional stability of -0.07 and -0.02 mm/m when you place them under the following conditions:

  •  A temperature of 1050C for about 4 hours

Physical properties

The Rogers CLTE-XT laminate bears the following physical properties:

Flammability

The Rogers CLTE-XT laminate has a flammability rating of V-o under the following test conditions:

  • C4B/23/50 and
  • C168/70

Moisture absorption rate

These laminate have a pretty low moisture absorption rate of 0.04% under the following test conditions:

  • E1/105+D24/23

Specific heat capacity

When you place the Rogers CLTE-XT laminate under the following test conditions:

  • Exposure to high temperatures reaching up to 1050C for about 2 hours

Its specific heat capacity hits:

  • 0.60 J/gK

Density

The Rogers CLTE-XT laminate has the following density:

  • 2.31 g/cm3

Conclusion

The Rogers CLTE-XT laminate has been one of the best laminates for a pretty long time. Its end game lies in its features and properties, which are just incredible. It offers durability, efficiency, and outstanding performance every time. Hence if you are looking for a laminate to utilize in your PCB, you should try this one out. It will not disappoint.