Why use FR4 to make high Tg PCBs?
Some applications require the PCB to withstand relative high temperatures of 200℃ or higher. For reliable operation in high temperature applications, we need dedicated PCBs manufactured using performance driven materials. This blog is designed to familiarize you with one such dedicated PCB, called HIGH-TG. These high tg PCBs can withstand extremely high glass transition temperatures of PCBs while providing the following features:
1. Improved impedance control
2. Better thermal management
3. Low moisture absorption
4. Consistent performance
FR4 — Preferred material for high Tg PCBs
For extreme temperature range applications, high Tg PCBs are manufactured using FR-4 substrates. Fr-4 is a flame retardant glass fiber reinforced epoxy material that resides multiple lamination cycles, complex PCB handling and allows lead-free welding. Common FR-4 substrates include pure PTFE, ceramic-filled PTFE, and thermosetting hydrocarbon substrates. The following are the special properties of the FR-4 substrate that make it ideal for PCBs for demanding applications.
1. Excellent electrical performance.
2. Can withstand special drilling and plating through hole (PTH) preparation.
3. Excellent plating through hole reliability.
4. The cost is relatively low.
5. Stable dissipation factor (Df) compared to other standard PCB materials.
6. Excellent chemical resistance
7. Suitable for PCB design requiring strict control of impedance
8. Shockproof, shockproof and flame retardant.
Considering its unique performance in thermal management, FR-4 High Tg PCBs are widely selected for applications in computing, storage and peripherals, consumer electronics, networking and communication systems, aerospace & Defense, medical, Industrial & Instrumentation, and automotive & electronics industries. The transportation industry.
Select the right materials to achieve the desired results
Among the available FR-4 material types, it is important to choose the right material for the application requirements, as it determines the stability and optimal performance of the final component. Factors such as dielectric permittivity, loss coefficient, thermal conductivity, transition temperature, coefficient of thermal expansion (CTE), electrical properties, etc., should be considered before selecting FR-4 substrates for your application. If you are confused about the type of FR-4 material to choose, consider working with a PCB manufacturer experienced in supplying high Tg PCBs to various industries. RigiFlex Technologies is one of the well-known PCB manufacturers in the market and they have hands-on experience in delivering high Tg PCBs in a variety of configurations. Request high tg PCB quote now!
Post time: Sep-17-2022
