What is Isola 370HR?

370HR is a high performance 180°C glass transition temperature (Tg) FR-4 system for multilayer Printed Wiring Board (PWB) applications where maximum thermal performance and reliability are required.

What is FR4 for PCB?

FR4 is a glass fiber epoxy laminate. It is the most commonly used PCB material. A 1.60mm FR4 uses 8 layers of (7628) glass fiber material. The red UL/manufacturers logo is in the middle (layer 4).

What material is commonly used for PCBs?

Copper is the most popular. That is why most PCBs are “copper clad.” Every metal selected for use in PCBs supports the use of surface mount technology or SMT components. This is where you apply the solder mask to the metal traces and heat the board to solder the components into place.

What is the dielectric constant of FR4?

between 3.8 and 4.8
For example, FR4 has a dielectric constant that varies between 3.8 and 4.8 depending on the glass weaving style, thickness, and resin content.

Is FR-4 hygroscopic?

The FR4 is a “hygroscopic” material that absorbs moisture from the atmosphere. Hence, once the PCBs are fabricated, they should be vacuum-sealed.

Why we use FR4 substrate in antenna?

FR4 is a cheaper material. Not just for patch antenna, mostly we used FR-4 substrate for low frequency designs because it is low-cost and easy available in the market. For high frequency designs we usually use high dielectric constant materials like Roger etc.

What is the difference between FR4 and FR-4?

Compared with the traditional FR-4, the system provides improved thermal performance and lower expansion rate, while maintaining the processability of FR-4. In addition to this superior thermal performance, its mechanical, chemical and moisture resistance are equal to or better than the traditional FR-4 materials.

What is 370370hr used for?

370HR is used in thousands of PWB designs and has proven to be best in class for thermal reliability, CAF performance, ease of processing and proven performance on sequential lamination designs. A. After moisture resistance B. At elevated temperature

What is 370370hr laminates?

370HR laminates and prepregs, deigned by Polyclad, are made using a patented high performance 180°C Tg FR-4 multifunctional epoxy resin system that is designed for multilayer Printed Wiring Board (PWB) applications where maximum thermal performance and reliability are required.