Quartz cloth
SQX series
The SQX (quartz cloth) series is core materials of low-dielectric substrates and a cloth product for pre-preg of CCL (Copper Clad Laminate) board.
Compared to conventional glass cloth, SQX has low dielectric and low dielectric loss tangent, it is suitable for base material for high-frequency substrates and FRP.
In addition, since SQX has a coefficient thermal expansion of about 1/10 that of general glass cloth, SQX can be used as a material for thin package substrates.
SQX can also be considered as a low alpha ray material.
Properties
| Grade | Dk | Df | CTE | Flexural modulus |
|---|---|---|---|---|
| 10-80GHz | 10-80GHz | ppm/°C | GPa | |
| SQX series | 3.7 | < 0.001 | 0.5-0.6 | 74-76 |
* The data of each product that exists in the above-mentioned table is not a standard value. Please test without fail before use beforehand, and confirm whether to suit use.