Rogers CuClad 250 Laminates and their importance

The Rogers CuClad 250 is a cross-plied laminate reinforced using PTFE and woven fiberglass to provide great stability. Due to these composites, this laminate can provide a dielectric constant that is pretty low—one that ranges between 2.40 -and 2.60. The laminate is super durable, and its efficiency is impeccable. However, are these the only features that this laminate great? Is there more to this laminate than meets the eyes? And if so, is it an excellent option to utilize this laminate on your PCB?

About the Rogers CuClad 250 laminate and why you should totally consider using it

The Rogers CuClad 250 laminate utilizes a pretty high PTFE/fiberglass ratio. In doing so, it is able to provide fascinating mechanical properties that almost match those of a conventional substrate.

The high PTFE/fiberglass ratio also helps immensely lower the laminate’s dielectric constant. And what’s even more fascinating is that it does so with little to no effect on the laminate’s mechanical properties.

By utilizing precision control on the PTFE/fiberglass ratio. The Rogers CuClad 250 laminate provides the aspect of variety. Hence, you can choose your laminate from a range of laminates with the lowest tangent loss and dielectric constant. Or you can opt for the laminates that have impeccable thermal expansion and better dimensional stability.

Rogers CuClad 250 laminates offer impeccable dimensional stability plus low thermal expansion. Hence, you can utilize this laminate in a wide temperature range with little to no damage to the laminate’s properties.

The Rogers CuClad 250 laminate is cross-plied. What this means is that the alternating perfect layers of fiberglass plies (coated) are oriented at a 90⁰ angle to each other. Due to this feature, the laminate can offer true mechanical and electrical isotropy onto the YX plane.

Features of the Rogers CuClad 250 laminate

The Rogers CuClad 250 laminate bears the following features that make it efficient and worth utilizing.

1. It is cross plied – The Rogers CuClad 250 laminate contains woven fiberglass that is cross plied. The orientation between different alternating plies is basically 90⁰C.
2. A high Glass to PTFE ratio – The Rogers CuClad 250 laminate bears a high glass to PTFE ratio. Due to this ratio, the laminate can offer special features, which include a pretty low Dk (dielectric constant)
3. Impeccable Dk uniformity– These laminates have remarkable uniformity in their Dk. Their Dk uniformity surpasses that of other comparable laminates that are reinforced using non-woven fiberglass.

Benefits of the Rogers CuClad 250 laminate

If you are looking to utilize the Rogers CuClad 250 laminate, then here are some benefits that you are likely to reap:

1. low losses, which are essential for an efficient Print circuit board
2. Mechanical and electrical isotropy ( on the Y – X plane) which makes this laminate great for antennas that have a phased array
3. Better result on the application of these laminates on circuits that are Er sensitive

Typical applications of the Rogers CuClad 250 laminate

The Rogers CuClad 250 laminate has a lot of applications which include:

• Applications in Microwave components – These laminates are applicable in microwave components. These components include couplers, filters, and LNAs
• Application in military electronics – These laminates are applicable in military electronics. These electronics include ESMs, ECMs, and Radars

Typical properties of the Rogers CuClad 250 laminate

The Rogers CuClad 250 laminate has the following properties:

Physical properties

Physical properties are essential as they are the properties that we can only observe and measure. When observing or measuring this property, we cannot alter the laminate’s chemical composition.

The Rogers CuClad 250 laminate entails the following physical properties:

Density

Under normal conditions, the Rogers CuClad 250 laminate bears the following density:

• 2.31 g/cc

Water absorption rate

The Rogers CuClad 250 laminate features a pretty low water absorption rate of:

• 0.030%

With such a low water absorption rate value, this laminate can function well in multiple environments, humid or otherwise.

Outgassing

When you place the Rogers CuClad 250 laminate under 1.33e-10MPa of pressure. And then add on a temperature of 125⁰C, the laminate’s outgassing values hit:

• 0.00% ( as per water vapor recovered)
• 0.010 % (as per NASA)

Volatile condensable collectible material

When you place the Rogers CuClad 250 laminate under 1.33e-10MPa of pressure. And then add on a temperature of 125⁰C. The laminate’s volatile condensable collectible material becomes:

• 0.00%

Mechanical properties of the Rogers CuClad 250 laminate

The Rogers CuClad 250 laminate exhibits the following mechanical properties:

Tensile strength

The Rogers CuClad 250 laminate bears the following tensile strength values:

• 141 MPa (cross)
• 179 MPa (machine)

Modulus of elasticity

The Rogers CuClad 250 laminate bears the following elasticity modulus under varying conditions:

• 3.94 GPa (cross)
• 5.00 GPa (machine)

Flexure modulus

Under standard conditions, the Rogers CuClad 250 laminate bears the following flexure modulus:

• >= 3.14 GPA

Compressive modulus

When you place the Rogers CuClad 250 laminate under a temperature of 23⁰C. And then utilize ASTM D-695 test conditions. The compressive modulus of the Rogers CuClad 250 laminate will hit:

• 2.36 GPA

Peel strength

After exposing the Rogers CuClad 250 laminate to thermal stress, its peel strength hits:

• 2.45 kN/m

Electrical properties of the Rogers CuClad 250 laminate

Electrical properties have to be impeccable for a laminate to perform well in its job. The Rogers CuClad 250 laminate offers impeccable and more.

Here are the electrical properties of the Rogers CuClad 250 laminate:

Volume resistivity

When you place the Rogers CuClad 250 laminate under C96/35/90 test conditions, its volume resistivity hits:

• 8.00e + 15 ohm-cm

Surface resistivity

The laminate’s surface resistivity under C96/35/90 test conditions stands at:

• 1.50e + 14 ohms

Dielectric constant

The Rogers CuClad 250 laminate bears the following dielectric constant under a frequency of 1.00e + 6 Hz:

• 2.4 – 2.6

When you up the frequency to hit 1.00 + 10 Hz, the dielectric constant remains stable and stagnant at a range of:

• 2.4 – 2.6

Thermal properties of the Rogers CuClad 250 laminate

The Rogers CuClad 250 laminate exhibits the following thermal properties:

CTE, linear

At a temperature range of 0.000 – 100 ⁰C, the x-direction CTE linear of the laminate stands at:

• 18.0 µm/m-°C

The y-direction CTE linear of the laminate, on the other hand, under the same test conditions, hits:

• 19.0 µm/m-°C

Thermal conductivity

When you place the Rogers CuClad 250 laminate under a temperature of 100⁰C, its thermal conductivity value hits:

• 0.254 W/m-K

Flammability

Under standard conditions, the flammability rating of the Rogers CuClad 250 laminate is:

• V-0

Conclusion

The Rogers CuClad 250 laminate is a durable, stable, and efficient laminate. Its unique features and properties make it one of a kind. Due to its efficiency, the Rogers CuClad 250 laminate has become pretty popular in the market today. Hence if you are looking for a laminate that ensures quality results, you should try out the Rogers CuClad 250 laminate. It will not disappoint you.