In this article, we’ll discuss what really characterizes the high Tg EM-390 laminate. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the high Tg, Low Loss and Halogen-free materials pcb, so please feel free to contact us.
What is the EM-390 PCB material?
EM-390 is high-temperature,low Dk and halogen-free materials made from epoxy resin and E-glass fabric. This Tg value can reach highs of 175 degrees centigrade. This range of eco-friendly materials aims to avoid halogenated resins due to environmental concerns about their potential hazards. These products are perfect for boards that need to withstand tough thermal cycles or heavy assembly processes. EM-390 laminates offer excellent chemical resistance, thermal stability for lead-free soldering.
EM-390 demonstrates superior electrical performance characteristics, making it suitable for various applications in electronics where reliability and efficiency are paramount. Its chemical resistance also contributes to its durability, ensuring that the PCBs maintain their integrity even when exposed to harsh environments or substances. EM-390 is meant to be used alongside EM-39B prepreg for creating multilayer printed circuit boards, while EM-390 can also be used on single or double-sided applications.
The features of EM-390 PCB material
High Tg characteristics
The high Tg of 165 °C EM-390 PCB material which is known for its elevated glass transition temperature (Tg), so that it possesses enhanced mechanical properties at elevated temperatures compared to standard polymers.
Low CTE and high modulus
The low CTE indicates that the material experiences minimal expansion or contraction when subjected to temperature fluctuations, thereby reducing the risk of mechanical stress on components mounted on the printed circuit board. This characteristic is essential in environments where electronic devices may undergo rapid heating and cooling cycles. Additionally, the high modulus property signifies that the EM-390 material possesses a strong resistance to deformation under applied loads. This rigidity contributes to maintaining precise dimensions during manufacturing processes and throughout the operational life of electronic assemblies.
Halogen free materials
EM-390 PCB material does not contain halogens, Halogens constitute a fascinating group of elements found in Group 17 of the periodic table, encompassing fluorine, chlorine, bromine, iodine, and astatine. These elements are often used in various chemical applications but can pose environmental and health risks when released into the environment. EM-390 PCB materials are designed to minimize harm during production, usage, and disposal phases. Often referred to as sustainable or eco-friendly materials, are substances that have a reduced impact on the environment throughout their lifecycle.
Lead-free assembly compatible
Materials meet lead-free assembly requirements and meet RoHS standards. The material works fine with lead-free laminate materials. This makes them much safer when using them. This also means that you will make use of the EM-390 PCB material without having to worry about environmental pollution or hazardous substances.
Good peel strength and suitable for mSAP process
The PCB material is characterized by its excellent peel strength, which is a critical property for ensuring the durability and reliability of printed circuit boards during manufacturing and assembly processes. This high peel strength minimizes the risk of delamination, thereby enhancing the overall performance of electronic devices that utilize this material. Additionally, EM-390 is particularly well-suited for mSAP (modified Semi-Additive Process) technology. The mSAP process allows for finer line widths and higher density interconnections on PCBs, making it an ideal choice for advanced applications in various industries such as telecommunications, consumer electronics, and automotive systems.
Low Water Absorption
Another great feature of the EM-390 PCB material is its low water absorption rate. With this feature, water will not penetrate it. What we mean is that the PCB material is useful in moisture-laden applications with less worry. This characteristic ensures that the integrity of the printed circuit boards is maintained over time, reducing the risk of corrosion and other forms of degradation that can occur when materials are exposed to damp conditions.
What is the electrical performance of the EM-390 PCB material?
The electrical performance of the EM-390 PCB material is closely related to its dielectric constant and dissipation factor.
The EM-390 PCB material exhibits a dielectric constant of 3.5, indicating its significance in impedance considerations and signal integrity. Furthermore, it possesses a remarkably low dissipation factor of 0.008, highlighting its capability to store energy effectively while functioning as an insulator.
The applications of EM-390 laminate system
Smart phone & tablet & laptop and wearable devices
The PCB material is specifically designed to meet the rigorous demands of modern electronic devices, including smartphones, tablets, laptops, and wearable technology. This advanced material offers excellent thermal stability and electrical performance, making it suitable for high-frequency applications commonly found in these devices.
In smartphones and tablets, the PCB material contributes to enhanced signal integrity and reduced electromagnetic interference (EMI), which are critical for maintaining optimal communication capabilities. For laptops, its lightweight yet durable properties help manufacturers create thinner designs without compromising on functionality or reliability.
Moreover, in wearable devices such as smartwatches and fitness trackers, the material is flexibility allows for innovative form factors while ensuring that all components remain securely connected during movement. The versatility of this PCB material supports a wide range of applications across various industries by enabling efficient manufacturing processes and promoting longevity in device performance.
Overall, the use of EM-390 PCB material plays a significant role in advancing technology within consumer electronics by providing essential characteristics that enhance both user experience and device efficiency.
The EM-390 PCB material is suitable for various applications, offering versatile performance and faster processing due to its rapid processing system. Additionally, this laminate material is available with both thinner and heavier copper options, and it exhibits excellent heat resistance.
